Forum Discussion

mci_bofh_8164's avatar
mci_bofh_8164
Icon for Nimbostratus rankNimbostratus
Aug 07, 2007

iRule redirect based on port

All,

 

 

I am trying to redirect to two different hosts base on port number. One server is hosting SMTP and the other POP3. The following rule seems valid but dosen't seem to work. Any suggestions?

 

 

when CLIENT_DATA {

 

if { [TCP::remote_port] contains "110" } {

 

pool POP3

 

}

 

elseif { [TCP::remote_port] contains "25" } {

 

pool SMTP

 

} else {

 

discard}

 

}
application delivery
dev
devops
iRules
  • Deb_Allen_18's avatar
    Deb_Allen_18
    Historic F5 Account
    Aug 07, 2007
    (Moved post to iRules v9.x forum.)

    Try this instead:
    when CLIENT_ACCEPTED {
  if {[TCP::remote_port] == 110} {
    pool POP3
  } elseif {[TCP::remote_port] == 25} {
    pool SMTP
  } else {
    discard
  }
}

    /deb
  • Al_Carandang_11's avatar
    Al_Carandang_11
    Icon for Nimbostratus rankNimbostratus
    Aug 08, 2007
    If the F5 is receiving the request, shouldn't the rule examine TCP::local_port on the client side? I think it would be TCP::remote port on the server side.
  • Thomas_Powers's avatar
    Thomas_Powers
    Icon for Nimbostratus rankNimbostratus
    Aug 26, 2008
    Why don't you use 2 separate virtual servers (with the same IP and different ports) with each pointing to a different pool?