Red Hat Bugzilla – Bug 25408
Default firewall configuration blocks name resolution
Last modified: 2014-03-16 22:18:35 EDT
During installation the default firewall option (high) produces ipchains
rules that prevent the local machine from doing proper name resolution.
The /etc/sysconfig/ipchains file looks like this:
-A input -s 0/0 -d 0/0 -i lo -j ACCEPT
-A input -s 0/0 -d 0/0 -p tcp -y -j DENY
-A input -s 0/0 -d 0/0 -p udp -j DENY
The last line is blocking the return packets from the name server.
Modifying the last line to this resolves the issue:
-A input -s 0/0 ! 53 -d 0/0 -p udp -j DENY
Did you not set up a nameserver during the install?
Fixing version to "beta3"
Yes a nameserver was already setup. here is my /etc/resolv.conf
The ipchains rule prevents the client from being able to resolve any names
Where did you configure the networking setup?
It was setup during the install to use dhcp.
Was this a local install or a network install?
*** This bug has been marked as a duplicate of 25951 ***