For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

cames1_233757's avatar
cames1_233757
Icon for Nimbostratus rankNimbostratus
Feb 02, 2016

Wildcard for Host Subdomains inside a Switch?

Is there a way to use wildcards to match any subdomain for Host entries inside a switch? So, for example:   switch -glob [string tolower [HTTP::host]] { "*.domain.com" { Do Something }   ...
application delivery
BIG-IP
iRules
mo_99289's avatar
mo_99289
Historic F5 Account
Feb 02, 2016

hope this could help

 

when HTTP_REQUEST {
    log local0. "Host is [string tolower [HTTP::host]]"
    switch -regexp [string tolower [HTTP::host]] {
       .*\.a.com {
          log local0. "*.a.com"
       }
       .*\.b.com {
          log local0. "*.b.com"
       }
       default {
          log local0. "default domain"
       }
}

 

simple test:

for host in web.a.com web.b.com web.c.coom; do curl -o /dev/null -H "Host: $host" http://10.2.22.183/; done

ltm log:

 

Feb  2 17:28:00 ve3 info tmm1[32273]: Rule /Common/irule_http_request : Host is web.a.com
Feb  2 17:28:00 ve3 info tmm1[32273]: Rule /Common/irule_http_request : *.a.com
Feb  2 17:28:00 ve3 info tmm[32273]: Rule /Common/irule_http_request : Host is web.b.com
Feb  2 17:28:00 ve3 info tmm[32273]: Rule /Common/irule_http_request : *.b.com
Feb  2 17:28:00 ve3 info tmm1[32273]: Rule /Common/irule_http_request : Host is web.c.coom
Feb  2 17:28:00 ve3 info tmm1[32273]: Rule /Common/irule_http_request : default domain