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Forum Discussion

GVR_Dinesh_1748's avatar
GVR_Dinesh_1748
Icon for Nimbostratus rankNimbostratus
Jun 01, 2018

Solution to capture traffic logs for specific VIP in LTM

Traffic logs wont store in F5 LTM so is there anyway to store the traffic logs from clients to specific VIP in syslog server in network. Please answer if there is any solution.  
BIG-IP
cloud
iRules
security
youssef1's avatar
youssef1
Icon for Cumulonimbus rankCumulonimbus
Jun 04, 2018

Hi,

you can try this irule:

when HTTP_REQUEST {
set capture 0
if {[IP::addr [IP::local_addr] equals 1.1.1.195] } {
set expert 1
   set LogString "Client [IP::client_addr]:[TCP::client_port] -> [HTTP::host][HTTP::uri]"
   log local0. "============================================="
   log local0. "$LogString (request)"
   foreach aHeader [HTTP::header names] {
      log local0. "$aHeader: [HTTP::header value $aHeader]"
   }
   log local0. "============================================="

}
}
when HTTP_RESPONSE {

if {$xpert} {
   log local0. "============================================="
   log local0. "$LogString (response) - status: [HTTP::status]"
   foreach aHeader [HTTP::header names] {
      log local0. "$aHeader: [HTTP::header value $aHeader]"
}
   log local0. "============================================="   
}
}

If you want to store this logs you can use HSL in order to send it directly to your remote syslog.

You have an example of output logs here: https://devcentral.f5.com/codeshare/log-http-headers

Keep me in touch.

regards