Forum Discussion

Spidey_29396's avatar
Spidey_29396
Icon for Nimbostratus rankNimbostratus
May 09, 2013

F5 as NAT device

HI All,

 

we have a deployment where F5 will be use as NAT device to replace a router. Im thinking what is the best practice for this, use route domain of just use vlan?

 

 

Thanks!

 

Ferdz

 

16 Replies

  • Hi Steve,

     

     

    Im having an issue with my NAT, i have here, i can't initiate traffic to the NAT address..did i missed something?

     

    ip nat inside source static 10.157.8.84 172.26.210.84

     

    ip nat outside source static 10.103.33.11 10.171.14.111

     

     

    vlan 10 - inside

     

    vlan 20 - outside

     

     

    ltm nat /Common/172.26.210.84 {

     

    inherited-traffic-group true

     

    originating-address 10.157.8.84

     

    traffic-group /Common/traffic-group-1

     

    translation-address 172.26.210.84

     

    }

     

    ltm nat /Common/10.171.14.111 {

     

    inherited-traffic-group true

     

    originating-address 10.103.33.11

     

    traffic-group /Common/traffic-group-1

     

    translation-address 10.171.14.111

     

    }

     

  • OK can you describe the IP setup on the device? Are routes available to all the relevant subnets?

     

     

    Just in case, it might also be worth clicking through to System ›› Configuration : Local Traffic : General and changing the SNAT Packet Forwarding setting to All Traffic.
  • F5 is in between a router

     

     

    router(.228/29-vlan 10)<> (.227/29 F5 .237/29) <> (.238/29-vlan 20)

     

     

     

    F5 will use as NAT device bidirectional.
  • Surely you need more than a default route? Also, please confirm it that's an LTM route or a management/HMS route?