iRule to discard specific DNS REQUEST
Hi We use F5 DNS and we saw there is many DNS request to us. for example. we have many spam dns request for www.seo.com which is not exist in our domain name. (it's non-existing domain spam) Can we have irule to discard only this request for www.seo.com in our listener? Is this irule work? when DNS_REQUEST { if {([string tolower [DNS::question name]] equals "www.seo.com")} { drop (or DNS::drop) } else { } }