path: root/templates/app/pfsense_snmp/README.md

# PFSense SNMP

## Overview

For Zabbix version: 6.2 and higher  
Template for monitoring pfSense by SNMP

This template was tested on:

- pfSense, version 2.5.0, 2.5.1, 2.5.2

## Setup

> See [Zabbix template operation](https://www.zabbix.com/documentation/6.2/manual/config/templates_out_of_the_box/network_devices) for basic instructions.

1. Import template into Zabbix
2. Enable SNMP daemon at Services in pfSense web interface https://docs.netgate.com/pfsense/en/latest/services/snmp.html
3. Setup firewall rule to get access from Zabbix proxy or Zabbix server by SNMP https://docs.netgate.com/pfsense/en/latest/firewall/index.html#managing-firewall-rules
4. Link template to the host


## Zabbix configuration

No specific Zabbix configuration is required.

### Macros used

|Name|Description|Default|
|----|-----------|-------|
|{$CPU.UTIL.CRIT} |<p>Threshold of CPU utilization for warning trigger in %.</p> |`90` |
|{$ICMP_LOSS_WARN} |<p>Threshold of ICMP packets loss for warning trigger in %.</p> |`20` |
|{$ICMP_RESPONSE_TIME_WARN} |<p>Threshold of average ICMP response time for warning trigger in seconds.</p> |`0.15` |
|{$IF.ERRORS.WARN} |<p>Threshold of error packets rate for warning trigger. Can be used with interface name as context.</p> |`2` |
|{$IF.UTIL.MAX} |<p>Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.</p> |`90` |
|{$IFCONTROL} |<p>Macro for operational state of the interface for link down trigger. Can be used with interface name as context.</p> |`1` |
|{$LOAD_AVG_PER_CPU.MAX.WARN} |<p>Load per CPU considered sustainable. Tune if needed.</p> |`1.5` |
|{$MEMORY.AVAILABLE.MIN} |<p>Threshold of available memory for trigger in bytes.</p> |`20M` |
|{$MEMORY.UTIL.MAX} |<p>Threshold of memory utilization for trigger in %</p> |`90` |
|{$NET.IF.IFADMINSTATUS.MATCHES} |<p>This macro is used in filters of network interfaces discovery rule.</p> |`^.*` |
|{$NET.IF.IFADMINSTATUS.NOT_MATCHES} |<p>Ignore down(2) administrative status</p> |`^2$` |
|{$NET.IF.IFALIAS.MATCHES} |<p>This macro is used in filters of network interfaces discovery rule.</p> |`.*` |
|{$NET.IF.IFALIAS.NOT_MATCHES} |<p>This macro is used in filters of network interfaces discovery rule.</p> |`CHANGE_IF_NEEDED` |
|{$NET.IF.IFDESCR.MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`.*` |
|{$NET.IF.IFDESCR.NOT_MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`CHANGE_IF_NEEDED` |
|{$NET.IF.IFNAME.MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`^em[0-9]+$` |
|{$NET.IF.IFNAME.NOT_MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`^$` |
|{$NET.IF.IFOPERSTATUS.MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`^.*$` |
|{$NET.IF.IFOPERSTATUS.NOT_MATCHES} |<p>Ignore notPresent(6)</p> |`^6$` |
|{$NET.IF.IFTYPE.MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`.*` |
|{$NET.IF.IFTYPE.NOT_MATCHES} |<p>This macro used in filters of network interfaces discovery rule.</p> |`CHANGE_IF_NEEDED` |
|{$SNMP.TIMEOUT} |<p>The time interval for SNMP availability trigger.</p> |`5m` |
|{$SOURCE.TRACKING.TABLE.UTIL.MAX} |<p>Threshold of source tracking table utilization trigger in %.</p> |`90` |
|{$STATE.TABLE.UTIL.MAX} |<p>Threshold of state table utilization trigger in %.</p> |`90` |
|{$SWAP.PFREE.MIN.WARN} |<p>Threshold of free swap space for warning trigger in %.</p> |`50` |
|{$VFS.DEV.DEVNAME.MATCHES} |<p>This macro is used in block devices discovery. Can be overridden on the host or linked template level</p> |`.+` |
|{$VFS.DEV.DEVNAME.NOT_MATCHES} |<p>This macro is used in block devices discovery. Can be overridden on the host or linked template level</p> |`^(loop[0-9]*|sd[a-z][0-9]+|nbd[0-9]+|sr[0-9]+|fd[0-9]+|dm-[0-9]+|ram[0-9]+|ploop[a-z0-9]+|md[0-9]*|hcp[0-9]*|cd[0-9]*|pass[0-9]*|zram[0-9]*)` |
|{$VFS.FS.FSNAME.MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`.+` |
|{$VFS.FS.FSNAME.NOT_MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`^(/dev|/sys|/run|/var/run|/proc|.+/shm$)` |
|{$VFS.FS.FSTYPE.MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`.*(9.3|hrFSBerkeleyFFS)$` |
|{$VFS.FS.FSTYPE.NOT_MATCHES} |<p>This macro is used in filesystems discovery. Can be overridden on the host or linked template level</p> |`^\s$` |
|{$VFS.FS.INODE.PFREE.MIN.CRIT} |<p>Threshold of inodes usage for average severity trigger in %. Can be used with filesystem name as context.</p> |`10` |
|{$VFS.FS.INODE.PFREE.MIN.WARN} |<p>Threshold of inodes usage for warning trigger in %. Can be used with filesystem name as context.</p> |`20` |
|{$VFS.FS.PUSED.MAX.CRIT} |<p>Threshold of filesystem used space for average severity trigger in %. Can be used with filesystem name as context.</p> |`90` |
|{$VFS.FS.PUSED.MAX.WARN} |<p>Threshold of used filesystem space for warning trigger in %. Can be used with filesystem name as context.</p> |`80` |

## Template links

There are no template links in this template.

## Discovery rules

|Name|Description|Type|Key and additional info|
|----|-----------|----|----|
|Block devices discovery |<p>Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).</p> |SNMP |vfs.dev.discovery<p>**Filter**:</p>AND <p>- {#DEVNAME} MATCHES_REGEX `{$VFS.DEV.DEVNAME.MATCHES}`</p><p>- {#DEVNAME} NOT_MATCHES_REGEX `{$VFS.DEV.DEVNAME.NOT_MATCHES}`</p> |
|CPU discovery |<p>This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.</p> |DEPENDENT |cpu.discovery<p>**Preprocessing**:</p><p>- JAVASCRIPT: `The text is too long. Please see the template.`</p> |
|Mounted filesystem discovery |<p>HOST-RESOURCES-MIB::hrFS discovery with filter.</p> |SNMP |vfs.fs.discovery<p>**Filter**:</p>AND <p>- {#FSTYPE} MATCHES_REGEX `{$VFS.FS.FSTYPE.MATCHES}`</p><p>- {#FSTYPE} NOT_MATCHES_REGEX `{$VFS.FS.FSTYPE.NOT_MATCHES}`</p><p>- {#FSNAME} MATCHES_REGEX `{$VFS.FS.FSNAME.MATCHES}`</p><p>- {#FSNAME} NOT_MATCHES_REGEX `{$VFS.FS.FSNAME.NOT_MATCHES}`</p> |
|Network interfaces discovery |<p>Discovering interfaces from IF-MIB.</p> |SNMP |net.if.discovery<p>**Filter**:</p>AND <p>- {#IFADMINSTATUS} MATCHES_REGEX `{$NET.IF.IFADMINSTATUS.MATCHES}`</p><p>- {#IFADMINSTATUS} NOT_MATCHES_REGEX `{$NET.IF.IFADMINSTATUS.NOT_MATCHES}`</p><p>- {#IFOPERSTATUS} MATCHES_REGEX `{$NET.IF.IFOPERSTATUS.MATCHES}`</p><p>- {#IFOPERSTATUS} NOT_MATCHES_REGEX `{$NET.IF.IFOPERSTATUS.NOT_MATCHES}`</p><p>- {#IFNAME} MATCHES_REGEX `{$NET.IF.IFNAME.MATCHES}`</p><p>- {#IFNAME} NOT_MATCHES_REGEX `{$NET.IF.IFNAME.NOT_MATCHES}`</p><p>- {#IFDESCR} MATCHES_REGEX `{$NET.IF.IFDESCR.MATCHES}`</p><p>- {#IFDESCR} NOT_MATCHES_REGEX `{$NET.IF.IFDESCR.NOT_MATCHES}`</p><p>- {#IFALIAS} MATCHES_REGEX `{$NET.IF.IFALIAS.MATCHES}`</p><p>- {#IFALIAS} NOT_MATCHES_REGEX `{$NET.IF.IFALIAS.NOT_MATCHES}`</p><p>- {#IFTYPE} MATCHES_REGEX `{$NET.IF.IFTYPE.MATCHES}`</p><p>- {#IFTYPE} NOT_MATCHES_REGEX `{$NET.IF.IFTYPE.NOT_MATCHES}`</p> |

## Items collected

|Group|Name|Description|Type|Key and additional info|
|-----|----|-----------|----|---------------------|
|CPU |PFSense: Interrupts per second |<p>MIB: UCD-SNMP-MIB</p><p>Number of interrupts processed.</p> |SNMP |system.cpu.intr<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|CPU |PFSense: Context switches per second |<p>MIB: UCD-SNMP-MIB</p><p>Number of context switches.</p> |SNMP |system.cpu.switches<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|CPU |PFSense: Load average (1m avg) |<p>MIB: UCD-SNMP-MIB</p><p>The 1 minute load averages.</p> |SNMP |system.cpu.load.avg1 |
|CPU |PFSense: Load average (5m avg) |<p>MIB: UCD-SNMP-MIB</p><p>The 5 minutes load averages.</p> |SNMP |system.cpu.load.avg5 |
|CPU |PFSense: Load average (15m avg) |<p>MIB: UCD-SNMP-MIB</p><p>The 15 minutes load averages.</p> |SNMP |system.cpu.load.avg15 |
|CPU |PFSense: Number of CPUs |<p>MIB: HOST-RESOURCES-MIB</p><p>Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.</p> |SNMP |system.cpu.num<p>**Preprocessing**:</p><p>- JAVASCRIPT: `//count the number of cores return JSON.parse(value).length; `</p> |
|CPU |PFSense: CPU idle time |<p>MIB: UCD-SNMP-MIB</p><p>The time the CPU has spent doing nothing.</p> |SNMP |system.cpu.idle[{#SNMPINDEX}] |
|CPU |PFSense: CPU system time |<p>MIB: UCD-SNMP-MIB</p><p>The time the CPU has spent running the kernel and its processes.</p> |SNMP |system.cpu.system[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> |
|CPU |PFSense: CPU user time |<p>MIB: UCD-SNMP-MIB</p><p>The time the CPU has spent running users' processes that are not niced.</p> |SNMP |system.cpu.user[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> |
|CPU |PFSense: CPU nice time |<p>MIB: UCD-SNMP-MIB</p><p>The time the CPU has spent running users' processes that have been niced.</p> |SNMP |system.cpu.nice[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> |
|CPU |PFSense: CPU iowait time |<p>MIB: UCD-SNMP-MIB</p><p>Amount of time the CPU has been waiting for I/O to complete.</p> |SNMP |system.cpu.iowait[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> |
|CPU |PFSense: CPU interrupt time |<p>MIB: UCD-SNMP-MIB</p><p>The amount of time the CPU has been servicing hardware interrupts.</p> |SNMP |system.cpu.interrupt[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT} `</p> |
|CPU |PFSense: CPU utilization |<p>CPU utilization in %.</p> |DEPENDENT |system.cpu.util[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- JAVASCRIPT: `//Calculate utilization return (100 - value) `</p> |
|General |PFSense: System contact details |<p>MIB: SNMPv2-MIB</p><p>The textual identification of the contact person for this managed node, together with information on how to contact this person. If no contact information is known, the value is the zero-length string.</p> |SNMP |system.contact<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|General |PFSense: System description |<p>MIB: SNMPv2-MIB</p><p>System description of the host.</p> |SNMP |system.descr<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|General |PFSense: System location |<p>MIB: SNMPv2-MIB</p><p>The physical location of this node. If the location is unknown, the value is the zero-length string.</p> |SNMP |system.location<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|General |PFSense: System name |<p>MIB: SNMPv2-MIB</p><p>System host name.</p> |SNMP |system.name<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|General |PFSense: System object ID |<p>MIB: SNMPv2-MIB</p><p>The vendor authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining what kind of box is being managed.</p> |SNMP |system.objectid<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|Memory |PFSense: Free memory |<p>MIB: UCD-SNMP-MIB</p><p>The amount of real/physical memory currently unused or available.</p> |SNMP |vm.memory.free<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Memory (buffers) |<p>MIB: UCD-SNMP-MIB</p><p>The total amount of real or virtual memory currently allocated for use as memory buffers.</p> |SNMP |vm.memory.buffers<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Memory (cached) |<p>MIB: UCD-SNMP-MIB</p><p>The total amount of real or virtual memory currently allocated for use as cached memory.</p> |SNMP |vm.memory.cached<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Total memory |<p>MIB: UCD-SNMP-MIB</p><p>Total memory in Bytes.</p> |SNMP |vm.memory.total<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Available memory |<p>Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.</p> |CALCULATED |vm.memory.available<p>**Expression**:</p>`last(//vm.memory.free)+last(//vm.memory.buffers)+last(//vm.memory.cached)` |
|Memory |PFSense: Memory utilization |<p>Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.</p> |CALCULATED |vm.memory.util<p>**Expression**:</p>`(last(//vm.memory.total)-(last(//vm.memory.free)+last(//vm.memory.buffers)+last(//vm.memory.cached)))/last(//vm.memory.total)*100` |
|Memory |PFSense: Total swap space |<p>MIB: UCD-SNMP-MIB</p><p>The total amount of swap space configured for this host.</p> |SNMP |system.swap.total<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Free swap space |<p>MIB: UCD-SNMP-MIB</p><p>The amount of swap space currently unused or available.</p> |SNMP |system.swap.free<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Memory |PFSense: Free swap space in % |<p>The free space of swap volume/file in percent.</p> |CALCULATED |system.swap.pfree<p>**Expression**:</p>`last(//system.swap.free)/last(//system.swap.total)*100` |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets discarded |<p>MIB: IF-MIB</p><p>The number of inbound packets which were chosen to be discarded</p><p>even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.</p><p>One possible reason for discarding such a packet could be to free up buffer space.</p><p>Discontinuities in the value of this counter can occur at re-initialization of the management system,</p><p>and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.in.discards[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets with errors |<p>MIB: IF-MIB</p><p>For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.  For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.in.errors[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Bits received |<p>MIB: IF-MIB</p><p>The total number of octets received on the interface, including framing characters. This object is a 64-bit version of ifInOctets. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.in[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets discarded |<p>MIB: IF-MIB</p><p>The number of outbound packets which were chosen to be discarded</p><p>even though no errors had been detected to prevent their being deliverable to a higher-layer protocol.</p><p>One possible reason for discarding such a packet could be to free up buffer space.</p><p>Discontinuities in the value of this counter can occur at re-initialization of the management system,</p><p>and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.out.discards[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets with errors |<p>MIB: IF-MIB</p><p>For packet-oriented interfaces, the number of outbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.  For character-oriented or fixed-length interfaces, the number of outbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.out.errors[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Bits sent |<p>MIB: IF-MIB</p><p>The total number of octets transmitted out of the interface, including framing characters. This object is a 64-bit version of ifOutOctets.Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.</p> |SNMP |net.if.out[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND: ``</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Speed |<p>MIB: IF-MIB</p><p>An estimate of the interface's current bandwidth in units of 1,000,000 bits per second. If this object reports a value of `n' then the speed of the interface is somewhere in the range of `n-500,000' to`n+499,999'.  For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.</p> |SNMP |net.if.speed[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1000000`</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `1h`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Operational status |<p>MIB: IF-MIB</p><p>The current operational state of the interface.</p><p>- The testing(3) state indicates that no operational packet scan be passed</p><p>- If ifAdminStatus is down(2) then ifOperStatus should be down(2)</p><p>- If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic</p><p>- It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection)</p><p>- It should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state</p><p>- It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.</p> |SNMP |net.if.status[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Interface type |<p>MIB: IF-MIB</p><p>The type of interface.</p><p>Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA),</p><p>through updating the syntax of the IANAifType textual convention.</p> |SNMP |net.if.type[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- DISCARD_UNCHANGED_HEARTBEAT: `6h`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Rules references count |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of rules referencing this interface.</p> |SNMP |net.if.rules.refs[{#SNMPINDEX}] |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv4 traffic passed |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv4 bits per second passed coming in on this interface.</p> |SNMP |net.if.in.pass.v4.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv4 traffic blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv4 bits per second blocked coming in on this interface.</p> |SNMP |net.if.in.block.v4.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv4 traffic passed |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv4 bits per second passed going out on this interface.</p> |SNMP |net.if.out.pass.v4.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv4 traffic blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv4 bits per second blocked going out on this interface.</p> |SNMP |net.if.out.block.v4.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv4 packets passed |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv4 packets passed coming in on this interface.</p> |SNMP |net.if.in.pass.v4.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv4 packets blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv4 packets blocked coming in on this interface.</p> |SNMP |net.if.in.block.v4.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv4 packets passed |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv4 packets passed going out on this interface.</p> |SNMP |net.if.out.pass.v4.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv4 packets blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv4 packets blocked going out on this interface.</p> |SNMP |net.if.out.block.v4.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv6 traffic passed |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv6 bits per second passed coming in on this interface.</p> |SNMP |net.if.in.pass.v6.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv6 traffic blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv6 bits per second blocked coming in on this interface.</p> |SNMP |net.if.in.block.v6.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv6 traffic passed |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv6 bits per second passed going out on this interface.</p> |SNMP |net.if.out.pass.v6.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv6 traffic blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>IPv6 bits per second blocked going out on this interface.</p> |SNMP |net.if.out.block.v6.bps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p><p>- MULTIPLIER: `8`</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv6 packets passed |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv6 packets passed coming in on this interface.</p> |SNMP |net.if.in.pass.v6.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Inbound IPv6 packets blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv6 packets blocked coming in on this interface.</p> |SNMP |net.if.in.block.v6.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv6 packets passed |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv6 packets passed going out on this interface.</p> |SNMP |net.if.out.pass.v6.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Network interfaces |PFSense: Interface [{#IFNAME}({#IFALIAS})]: Outbound IPv6 packets blocked |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of IPv6 packets blocked going out on this interface.</p> |SNMP |net.if.out.block.v6.pps[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Packet filter running status |<p>MIB: BEGEMOT-PF-MIB</p><p>True if packet filter is currently enabled.</p> |SNMP |pfsense.pf.status |
|pfSense |PFSense: States table current |<p>MIB: BEGEMOT-PF-MIB</p><p>Number of entries in the state table.</p> |SNMP |pfsense.state.table.count |
|pfSense |PFSense: States table limit |<p>MIB: BEGEMOT-PF-MIB</p><p>Maximum number of 'keep state' rules in the ruleset.</p> |SNMP |pfsense.state.table.limit |
|pfSense |PFSense: States table utilization in % |<p>Utilization of state table in %.</p> |CALCULATED |pfsense.state.table.pused<p>**Expression**:</p>`last(//pfsense.state.table.count) * 100 / last(//pfsense.state.table.limit)` |
|pfSense |PFSense: Source tracking table current |<p>MIB: BEGEMOT-PF-MIB</p><p>Number of entries in the source tracking table.</p> |SNMP |pfsense.source.tracking.table.count |
|pfSense |PFSense: Source tracking table limit |<p>MIB: BEGEMOT-PF-MIB</p><p>Maximum number of 'sticky-address' or 'source-track' rules in the ruleset.</p> |SNMP |pfsense.source.tracking.table.limit |
|pfSense |PFSense: Source tracking table utilization in % |<p>Utilization of source tracking table in %.</p> |CALCULATED |pfsense.source.tracking.table.pused<p>**Expression**:</p>`last(//pfsense.source.tracking.table.count) * 100 / last(//pfsense.source.tracking.table.limit)` |
|pfSense |PFSense: DHCP server status |<p>MIB: HOST-RESOURCES-MIB</p><p>The status of DHCP server process.</p> |SNMP |pfsense.dhcpd.status<p>**Preprocessing**:</p><p>- CHECK_NOT_SUPPORTED: ``</p><p>⛔️ON_FAIL: `CUSTOM_VALUE -> 0`</p> |
|pfSense |PFSense: DNS server status |<p>MIB: HOST-RESOURCES-MIB</p><p>The status of DNS server process.</p> |SNMP |pfsense.dns.status<p>**Preprocessing**:</p><p>- CHECK_NOT_SUPPORTED: ``</p><p>⛔️ON_FAIL: `CUSTOM_VALUE -> 0`</p> |
|pfSense |PFSense: State of nginx process |<p>MIB: HOST-RESOURCES-MIB</p><p>The status of nginx process.</p> |SNMP |pfsense.nginx.status<p>**Preprocessing**:</p><p>- CHECK_NOT_SUPPORTED: ``</p><p>⛔️ON_FAIL: `CUSTOM_VALUE -> 0`</p> |
|pfSense |PFSense: Packets matched a filter rule |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.match<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Packets with bad offset |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.bad.offset<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Fragmented packets |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.fragment<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Short packets |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.short<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Normalized packets |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.normalize<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Packets dropped due to memory limitation |<p>MIB: BEGEMOT-PF-MIB</p><p>True if the packet was logged with the specified packet filter reason code. The known codes are: match, bad-offset, fragment, short, normalize, and memory.</p> |SNMP |pfsense.packets.mem.drop<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|pfSense |PFSense: Firewall rules count |<p>MIB: BEGEMOT-PF-MIB</p><p>The number of labeled filter rules on this system.</p> |SNMP |pfsense.rules.count |
|Status |PFSense: ICMP ping |<p>Host accessibility by ICMP.</p><p>0 - ICMP ping fails.</p><p>1 - ICMP ping successful.</p> |SIMPLE |icmpping |
|Status |PFSense: ICMP loss |<p>Percentage of lost packets.</p> |SIMPLE |icmppingloss |
|Status |PFSense: ICMP response time |<p>ICMP ping response time (in seconds).</p> |SIMPLE |icmppingsec |
|Status |PFSense: Uptime |<p>MIB: SNMPv2-MIB</p><p>System uptime in 'N days, hh:mm:ss' format.</p> |SNMP |system.uptime<p>**Preprocessing**:</p><p>- MULTIPLIER: `0.01`</p> |
|Status |PFSense: SNMP agent availability |<p>Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list.</p><p>Possible value:</p><p>0 - not available</p><p>1 - available</p><p>2 - unknown</p> |INTERNAL |zabbix[host,snmp,available] |
|Storage |PFSense: [{#FSNAME}]: Used space |<p>MIB: UCD-SNMP-MIB</p><p>If having problems collecting this item make sure access to UCD-SNMP-MIB is allowed.</p> |SNMP |vfs.fs.used[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Storage |PFSense: [{#FSNAME}]: Total space |<p>MIB: UCD-SNMP-MIB</p><p>If having problems collecting this item make sure access to UCD-SNMP-MIB is allowed.</p> |SNMP |vfs.fs.total[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- MULTIPLIER: `1024`</p> |
|Storage |PFSense: [{#FSNAME}]: Space utilization |<p>MIB: UCD-SNMP-MIB</p><p>If having problems collecting this item make sure access to UCD-SNMP-MIB is allowed.</p> |SNMP |vfs.fs.pused[{#SNMPINDEX}] |
|Storage |PFSense: [{#FSNAME}]: Free inodes in % |<p>MIB: UCD-SNMP-MIB</p><p>If having problems collecting this item make sure access to UCD-SNMP-MIB is allowed.</p> |SNMP |vfs.fs.inode.pfree[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- JAVASCRIPT: `return (100-value);`</p> |
|Storage |PFSense: [{#DEVNAME}]: Disk read rate |<p>MIB: UCD-DISKIO-MIB</p><p>The number of read accesses from this device since boot.</p> |SNMP |vfs.dev.read.rate[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Storage |PFSense: [{#DEVNAME}]: Disk write rate |<p>MIB: UCD-DISKIO-MIB</p><p>The number of write accesses from this device since boot.</p> |SNMP |vfs.dev.write.rate[{#SNMPINDEX}]<p>**Preprocessing**:</p><p>- CHANGE_PER_SECOND</p> |
|Storage |PFSense: [{#DEVNAME}]: Disk utilization |<p>MIB: UCD-DISKIO-MIB</p><p>The 1 minute average load of disk (%).</p> |SNMP |vfs.dev.util[{#SNMPINDEX}] |

## Triggers

|Name|Description|Expression|Severity|Dependencies and additional info|
|----|-----------|----|----|----|
|PFSense: Load average is too high (per CPU load over {$LOAD_AVG_PER_CPU.MAX.WARN} for 5m) |<p>Per CPU load average is too high. Your system may be slow to respond.</p> |`min(/PFSense SNMP/system.cpu.load.avg1,5m)/last(/PFSense SNMP/system.cpu.num)>{$LOAD_AVG_PER_CPU.MAX.WARN} and last(/PFSense SNMP/system.cpu.load.avg5)>0 and last(/PFSense SNMP/system.cpu.load.avg15)>0 ` |AVERAGE | |
|PFSense: High CPU utilization (over {$CPU.UTIL.CRIT}% for 5m) |<p>CPU utilization is too high. The system might be slow to respond.</p> |`min(/PFSense SNMP/system.cpu.util[{#SNMPINDEX}],5m)>{$CPU.UTIL.CRIT}` |WARNING |<p>**Depends on**:</p><p>- PFSense: Load average is too high (per CPU load over {$LOAD_AVG_PER_CPU.MAX.WARN} for 5m)</p> |
|PFSense: System name has changed (new name: {ITEM.VALUE}) |<p>System name has changed. Ack to close.</p> |`last(/PFSense SNMP/system.name,#1)<>last(/PFSense SNMP/system.name,#2) and length(last(/PFSense SNMP/system.name))>0` |INFO |<p>Manual close: YES</p> |
|PFSense: Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2}) |<p>The system is running out of memory.</p> |`min(/PFSense SNMP/vm.memory.available,5m)<{$MEMORY.AVAILABLE.MIN} and last(/PFSense SNMP/vm.memory.total)>0` |AVERAGE | |
|PFSense: High memory utilization (>{$MEMORY.UTIL.MAX}% for 5m) |<p>The system is running out of free memory.</p> |`min(/PFSense SNMP/vm.memory.util,5m)>{$MEMORY.UTIL.MAX}` |AVERAGE |<p>**Depends on**:</p><p>- PFSense: Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})</p> |
|PFSense: High swap space usage (less than {$SWAP.PFREE.MIN.WARN}% free) |<p>This trigger is ignored, if there is no swap configured.</p> |`min(/PFSense SNMP/system.swap.pfree,5m)<{$SWAP.PFREE.MIN.WARN} and last(/PFSense SNMP/system.swap.total)>0` |WARNING |<p>**Depends on**:</p><p>- PFSense: High memory utilization (>{$MEMORY.UTIL.MAX}% for 5m)</p><p>- PFSense: Lack of available memory (<{$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: High input error rate ( > {$IF.ERRORS.WARN:"{#IFNAME}"} for 5m) |<p>Recovers when below 80% of {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.</p> |`min(/PFSense SNMP/net.if.in.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`<p>Recovery expression:</p>`max(/PFSense SNMP/net.if.in.errors[{#SNMPINDEX}],5m)<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8` |WARNING |<p>**Depends on**:</p><p>- PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: High inbound bandwidth usage ( > {$IF.UTIL.MAX:"{#IFNAME}"}% ) |<p>The network interface utilization is close to its estimated maximum bandwidth.</p> |`(avg(/PFSense SNMP/net.if.in[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])) and last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])>0 `<p>Recovery expression:</p>`avg(/PFSense SNMP/net.if.in[{#SNMPINDEX}],15m)<(({$IF.UTIL.MAX:"{#IFNAME}"}-3)/100)*last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])` |WARNING |<p>**Depends on**:</p><p>- PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: High output error rate ( > {$IF.ERRORS.WARN:"{#IFNAME}"} for 5m) |<p>Recovers when below 80% of {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.</p> |`min(/PFSense SNMP/net.if.out.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`<p>Recovery expression:</p>`max(/PFSense SNMP/net.if.out.errors[{#SNMPINDEX}],5m)<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8` |WARNING |<p>**Depends on**:</p><p>- PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: High outbound bandwidth usage ( > {$IF.UTIL.MAX:"{#IFNAME}"}% ) |<p>The network interface utilization is close to its estimated maximum bandwidth.</p> |`(avg(/PFSense SNMP/net.if.out[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])) and last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])>0 `<p>Recovery expression:</p>`avg(/PFSense SNMP/net.if.out[{#SNMPINDEX}],15m)<(({$IF.UTIL.MAX:"{#IFNAME}"}-3)/100)*last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])` |WARNING |<p>**Depends on**:</p><p>- PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: Ethernet has changed to lower speed than it was before |<p>This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Ack to close.</p> |`change(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])<0 and last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])>0 and ( last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=6 or last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=7 or last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=11 or last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=62 or last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=69 or last(/PFSense SNMP/net.if.type[{#SNMPINDEX}])=117 ) and (last(/PFSense SNMP/net.if.status[{#SNMPINDEX}])<>2) `<p>Recovery expression:</p>`(change(/PFSense SNMP/net.if.speed[{#SNMPINDEX}])>0 and last(/PFSense SNMP/net.if.speed[{#SNMPINDEX}],#2)>0) or (last(/PFSense SNMP/net.if.status[{#SNMPINDEX}])=2) ` |INFO |<p>**Depends on**:</p><p>- PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down</p> |
|PFSense: Interface [{#IFNAME}({#IFALIAS})]: Link down |<p>This trigger expression works as follows:</p><p>1. Can be triggered if operations status is down.</p><p>2. {$IFCONTROL:"{#IFNAME}"}=1 - user can redefine Context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.</p> |`{$IFCONTROL:"{#IFNAME}"}=1 and (last(/PFSense SNMP/net.if.status[{#SNMPINDEX}])=2)` |AVERAGE | |
|PFSense: Packet filter is not running |<p>Please check PF status.</p> |`last(/PFSense SNMP/pfsense.pf.status)<>1` |HIGH | |
|PFSense: State table usage more than {$STATE.TABLE.UTIL.MAX}. |<p>Please check the number of connections https://docs.netgate.com/pfsense/en/latest/config/advanced-firewall-nat.html#config-advanced-firewall-maxstates</p> |`min(/PFSense SNMP/pfsense.state.table.pused,#3)>{$STATE.TABLE.UTIL.MAX}` |WARNING | |
|PFSense: Source tracking table usage more than {$SOURCE.TRACKING.TABLE.UTIL.MAX}. |<p>Please check the number of sticky connections https://docs.netgate.com/pfsense/en/latest/monitoring/status/firewall-states-sources.html</p> |`min(/PFSense SNMP/pfsense.source.tracking.table.pused,#3)>{$SOURCE.TRACKING.TABLE.UTIL.MAX}` |WARNING | |
|PFSense: DHCP server is not running |<p>Please check DHCP server settings https://docs.netgate.com/pfsense/en/latest/services/dhcp/index.html</p> |`last(/PFSense SNMP/pfsense.dhcpd.status)=0` |AVERAGE | |
|PFSense: DNS server is not running |<p>Please check DNS server settings https://docs.netgate.com/pfsense/en/latest/services/dns/index.html</p> |`last(/PFSense SNMP/pfsense.dns.status)=0` |AVERAGE | |
|PFSense: Web server is not running |<p>Please check nginx service status.</p> |`last(/PFSense SNMP/pfsense.nginx.status)=0` |AVERAGE | |
|PFSense: Unavailable by ICMP ping |<p>Last three attempts returned timeout.  Please check device connectivity.</p> |`max(/PFSense SNMP/icmpping,#3)=0` |HIGH | |
|PFSense: High ICMP ping loss |<p>ICMP packets loss detected.</p> |`min(/PFSense SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/PFSense SNMP/icmppingloss,5m)<100` |WARNING |<p>**Depends on**:</p><p>- PFSense: Unavailable by ICMP ping</p> |
|PFSense: High ICMP ping response time |<p>Average ICMP response time is too big.</p> |`avg(/PFSense SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN}` |WARNING |<p>**Depends on**:</p><p>- PFSense: Unavailable by ICMP ping</p> |
|PFSense: has been restarted (uptime < 10m) |<p>Uptime is less than 10 minutes.</p> |`last(/PFSense SNMP/system.uptime)<10m` |INFO |<p>Manual close: YES</p> |
|PFSense: No SNMP data collection |<p>SNMP is not available for polling. Please check device connectivity and SNMP settings.</p> |`max(/PFSense SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0` |WARNING |<p>**Depends on**:</p><p>- PFSense: Unavailable by ICMP ping</p> |
|PFSense: [{#FSNAME}]: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}.</p><p>Second condition should be one of the following:</p><p>  - The disk free space is less than 5G.</p><p>  - The disk will be full in less than 24 hours.</p> |`last(/PFSense SNMP/vfs.fs.pused[{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and ((last(/PFSense SNMP/vfs.fs.total[{#SNMPINDEX}])-last(/PFSense SNMP/vfs.fs.used[{#SNMPINDEX}]))<5G or timeleft(/PFSense SNMP/vfs.fs.pused[{#SNMPINDEX}],1h,100)<1d) ` |AVERAGE |<p>Manual close: YES</p> |
|PFSense: [{#FSNAME}]: Disk space is low (used > {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}%) |<p>Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}.</p><p>Second condition should be one of the following:</p><p>  - The disk free space is less than 5G.</p><p>  - The disk will be full in less than 24 hours.</p> |`last(/PFSense SNMP/vfs.fs.pused[{#SNMPINDEX}])>{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"} and ((last(/PFSense SNMP/vfs.fs.total[{#SNMPINDEX}])-last(/PFSense SNMP/vfs.fs.used[{#SNMPINDEX}]))<10G or timeleft(/PFSense SNMP/vfs.fs.pused[{#SNMPINDEX}],1h,100)<1d) ` |WARNING |<p>Manual close: YES</p><p>**Depends on**:</p><p>- PFSense: [{#FSNAME}]: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%)</p> |
|PFSense: [{#FSNAME}]: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%) |<p>It may become impossible to write to disk if there are no index nodes left.</p><p>As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.</p> |`min(/PFSense SNMP/vfs.fs.inode.pfree[{#SNMPINDEX}],5m)<{$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}` |AVERAGE | |
|PFSense: [{#FSNAME}]: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"}%) |<p>It may become impossible to write to disk if there are no index nodes left.</p><p>As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.</p> |`min(/PFSense SNMP/vfs.fs.inode.pfree[{#SNMPINDEX}],5m)<{$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"}` |WARNING |<p>**Depends on**:</p><p>- PFSense: [{#FSNAME}]: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%)</p> |

## Feedback

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