IP addresses for self-originated traffic

IP addresses for self-originated traffic

On the FortiGate unit, there are a number of protocols and traffic that is specific to the internal workings of FortiOS. For many of these traffic sources, you can identify a specific port/IP address for this self-originating traffic. The following traffic can be configured to a specific port/IP address:

  • SNMP
  • Syslog
  • alert email
  • FortiManager connection IP
  • FortiGuard services
  • FortiAnalyzer logging
  • NTP
  • DNS
  • Authorization requests such as RADIUS
  • FSSO

Configuration of these services is performed in the CLI. In each instance, there is a command set source-ip. For example, to set the source IP of NTP to be on the DMZ1 port with an IP of 192.168.4.5, the commands are:

config system ntp

set ntpsync enable set syncinterval 5

set source-ip 192.168.4.5 end

 

To see which services are configured with source-ip settings, use the get command:

get system source-ip status

 

The output will appear similar to the sample below:

NTP: x.x.x.x DNS: x.x.x.x SNMP: x.x.x.x

Central Management: x.x.x.x

FortiGuard Updates (AV/IPS): x.x.x.x

FortiGuard Queries (WebFilter/SpamFilter): x.x.x.x


Having trouble configuring your Fortinet hardware or have some questions you need answered? Ask your questions in the comments below!!! Want someone else to deal with it for you? Get some consulting from Fortinet GURU!

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