Loading ...HowTo use Dig to check if a DNS server is using random source ports
You can quickly test with dig if a DNS resolver is using random source ports for queries:
dig +short @<IP_DNS_SERVER> porttest.dns-oarc.net txt
for more details check out my post about this: “How to check if your DNS server implements source port randomization“
Tags: bind, dns, named, Security
10th February 2009, 10:23
Why we have to test?
10th February 2009, 21:14
@Thet Paing: to quickly see (remotely) if you need to fix this or not.