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Can IPtable check for a valid IP address?

+2 votes
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We suffer from DNS lookups with a response IP address which is not existing. Can Iptables check on this?

posted Sep 18, 2014 by anonymous

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1 Answer

0 votes

What is it you actually want iptables to do? Do you want it to check if the IP address that the DNS server responds with exists and is in use?

Iptables (well, Netfilter) is a packet filter. You can filter packets that match a rule that you define. It can't validate your DNS server's output.

answer Sep 18, 2014 by Seema Siddique
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