Forum Discussion
Deepti_Nayak_26
Nimbostratus
NimbostratusIrule for reverse DNS lookup
Hello ,
Currently we have applied Irule for DNS lookup & allowing DNS entries that only ends with a a particular fqdn
for e.g
when DNS_REQUEST {
set fqdn [DNS::question name]
...
Ilian_IvanovNimbostratus
NimbostratusMy best guess is:
when DNS_REQUEST {
set fqdn [DNS::question name]
if { !($fqdn ends_with "xxx.org.in")} {
log localo. "----[DNS::question name] Dropped-----"
drop
}
}
when DNS_RESPONSE {
set answer [DNS::rrname]
if { !($answer ends_with "xxx.org.in")} {
log localo. "----[DNS::rrname] Dropped-----"
drop
}
}
You can also try with [DNS::answer] instead of [DNS::rrname].
