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Full Discussion: LINUX 9 IPTABLES and DNS
Top Forums UNIX for Advanced & Expert Users LINUX 9 IPTABLES and DNS Post 65058 by frankkahle on Thursday 3rd of March 2005 08:23:28 AM
Old 03-03-2005
LINUX 9 IPTABLES and DNS

I have installed a linux 9 router/firewall and have issues with outside DNS queries making it in. here are my IPTABLE rules, can anyone make some suggestions?

ETH1 is my outside facing Interface, ETH0 is my inside facing interface.

Accept If input interface is not eth1
Accept If protocol is TCP and TCP flags ACK (of ACK) are set
Accept If protocol is UDP and input interface is eth1 and destination port is 1024:65535 and source port is 53
Accept If state of connection is ESTABLISHED
Accept If state of connection is RELATED
Accept If protocol is TCP and destination is 216.58.39.241 and input interface is eth1 and destination port is 110
Accept If protocol is TCP and destination is 216.58.39.241 and input interface is eth1 and destination port is 25
Accept If protocol is TCP and input interface is eth1 and source and destination ports are 6346
Accept If protocol is ICMP and ICMP type is source-quench
Accept If protocol is ICMP and ICMP type is time-exceeded
Accept If protocol is ICMP and ICMP type is parameter-problem
Accept If protocol is TCP and destination port is ssh
Accept If protocol is TCP and destination port is auth
 

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LINUX-VERSION(1)					      General Commands Manual						  LINUX-VERSION(1)

NAME
linux-version - operate on Linux kernel version strings SYNOPSIS
linux-version compare VERSION1 OP VERSION2 linux-version sort [--reverse] [VERSION1 VERSION2 ...] linux-version list [--paths] DESCRIPTION
linux-version operates on Linux kernel version strings as reported by uname -r and used in file and directory names. These version strings do not follow the same rules as Debian package version strings and should not be compared as such or as arbitrary strings. compare VERSION1 OP VERSION2 Compare version strings, where OP is a binary operator. linux-version returns success (zero result) if the specified condition is satisfied, and failure (nonzero result) otherwise. The valid operators are: lt le eq ne ge gt sort [--reverse] [VERSION1 VERSION2 ...] Sort the given version strings and print them in order from lowest to highest. If the --reverse option is used, print them in order from highest to lowest. If no version strings are given as arguments, the version strings will instead be read from standard input, one per line. They may be suffixed by arbitrary text after a space, which will be included in the output. This means that, for example: linux-version list --paths | linux-version sort --reverse will list the installed versions and corresponding paths in order from highest to lowest version. list [--paths] List kernel versions installed in the customary location. If the --paths option, show the corresponding path for each version. AUTHOR
linux-version and this manual page were written by Ben Hutchings as part of the Debian linux-base package. 30 March 2011 LINUX-VERSION(1)
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