GREGOR wrote:

> I'm using DCD, I set it up as firewall, with IP aliasing on eth0, DMZ
> switch=PRIVATE on eth2 and internal network on eth1.(thank's to bela,charles
> and ray).
>
> I've got tons of logs of hits on port 53 like the following examples :
>

Since you are using DCD - try adding all the port 53 flood servers in
SILENT_DENY.
Here is a copy of my list - note that they are all on one line each machine
separated by a space.  I have modified my list.

# grep SILENT_DENY /etc/network.conf

SILENT_DENY="tcp_64.78.235.14_53 tcp_64.56.174.186_53
tcp_64.37.200.46_53 tcp_64.14.200.154_53 tcp_62.26.119.34_53
tcp_62.23.80.2_53 tcp_216.35.167.58_53 tcp_216.34.68.2_53
tcp_216.33.35.214_53 tcp_216.220.39.42_53 tcp_212.78.160.237_53
tcp_203.208.128.70_53 tcp_203.194.166.182_53 tcp_202.139.133.129_53
tcp_194.213.64.150_53 tcp_194.205.125.26_53"

svi network ipfilter reload

If it stops the log noise - then backup etc.

Victor McAllister



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