Re: [gentoo-user] IPTABLES syntax change?

["Walter Dnes" <waltdnes@waltdnes.org>]

On Thu, Dec 27, 2012 at 06:50:07PM -0500, Michael Orlitzky wrote

> Once you've upgraded, you should be able to add all of your old --state
> rules normally, albeit with a warning. The new iptables will translate
> them to conntrack rules, and you can `/etc/init.d/iptables save` the result.
> 
> The upgrade just fails in a horrible way.

  Here's my revised "Paranoia Plus" ruleset.  Any comments?  Because I'm
behind a NAT-ing ADSL router/modem, many of my rules rarely see hits.
However, I do have a backup dialup connection in case of problems, so
most of my rules don't specify the network interface.  A couple of
notes...

* My little lan is 192.168.123.248/29
* I have a TV tuner box that comes up in the zero-config space, so I
  have to allow 169.254.0.0/16 
* I "dislike" a certain button following me.

# Generated by iptables-save v1.4.16.3 on Thu Dec 27 22:43:12 2012
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT DROP [0:0]
:DROP_LOG - [0:0]
:FECESBOOK - [0:0]
:ICMP_IN - [0:0]
:PRIVATE - [0:0]
:PRIVATE_LOG - [0:0]
:TCP_IN - [0:0]
:UDP_IN - [0:0]
:UNSOLICITED - [0:0]
[0:0] -A INPUT -s 192.168.123.248/29 -i eth0 -j ACCEPT
[0:0] -A INPUT -s 169.254.0.0/16 -i eth0 -j ACCEPT
[0:0] -A INPUT -s 69.63.176.0/20 -j FECESBOOK
[0:0] -A INPUT -s 69.220.144.0/20 -j FECESBOOK
[0:0] -A INPUT -s 69.63.176.0/20 -j FECESBOOK
[0:0] -A INPUT -s 69.171.224.0/19 -j FECESBOOK
[0:0] -A INPUT -s 200.58.112.0/20 -j FECESBOOK
[0:0] -A INPUT -s 213.155.64.0/19 -j FECESBOOK
[0:0] -A INPUT -p tcp -m tcp --sport 53 -j ACCEPT
[0:0] -A INPUT -p udp -m udp --sport 53 -j ACCEPT
[0:0] -A INPUT -i lo -j ACCEPT
[0:0] -A INPUT -f -j LOG --log-prefix "FRAGMENTS:" --log-level 6
[0:0] -A INPUT -f -j DROP
[0:0] -A INPUT -p tcp -j TCP_IN
[0:0] -A INPUT -p udp -j UDP_IN
[0:0] -A INPUT -p icmp -j ICMP_IN
[0:0] -A INPUT -j LOG --log-prefix "BAD_PROTOCOL:" --log-level 6
[0:0] -A INPUT -j DROP
[0:0] -A OUTPUT -d 192.168.123.248/29 -o eth0 -j ACCEPT
[0:0] -A OUTPUT -o lo -j ACCEPT
[0:0] -A OUTPUT -p icmp -m icmp --icmp-type 3 -j ACCEPT
[0:0] -A OUTPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
[0:0] -A OUTPUT -p icmp -m icmp --icmp-type 30 -j ACCEPT
[0:0] -A OUTPUT -p tcp -m tcp --sport 0:1023 -j DROP_LOG
[0:0] -A OUTPUT -p udp -m udp --sport 0:1023 -j DROP_LOG
[0:0] -A OUTPUT -p tcp -m tcp --sport 6000:6063 -j DROP_LOG
[0:0] -A OUTPUT -p udp -m udp --sport 6000:6063 -j DROP_LOG
[0:0] -A OUTPUT -j ACCEPT
[0:0] -A DROP_LOG -j LOG --log-level 6
[0:0] -A DROP_LOG -j DROP
[0:0] -A FECESBOOK -j LOG --log-prefix "FECESBOOK:" --log-level 6
[0:0] -A FECESBOOK -j DROP
[0:0] -A ICMP_IN -p icmp -m conntrack --ctstate NEW -j UNSOLICITED
[0:0] -A ICMP_IN -p icmp -m icmp --icmp-type 0 -j PRIVATE
[0:0] -A ICMP_IN -p icmp -m icmp --icmp-type 3 -j PRIVATE
[0:0] -A ICMP_IN -p icmp -m icmp --icmp-type 4 -j PRIVATE
[0:0] -A ICMP_IN -p icmp -m icmp --icmp-type 11 -j PRIVATE
[0:0] -A ICMP_IN -p icmp -m icmp --icmp-type 12 -j PRIVATE
[0:0] -A ICMP_IN -j LOG --log-prefix "IN_BAD_ICMP:" --log-level 6
[0:0] -A ICMP_IN -j DROP
[0:0] -A PRIVATE -s 10.0.0.0/8 -j PRIVATE_LOG
[0:0] -A PRIVATE -s 127.0.0.0/8 -j PRIVATE_LOG
[0:0] -A PRIVATE -s 172.16.0.0/12 -j PRIVATE_LOG
[0:0] -A PRIVATE -s 192.168.0.0/16 -j PRIVATE_LOG
[0:0] -A PRIVATE -j ACCEPT
[0:0] -A PRIVATE_LOG -j LOG --log-prefix "IN_BAD_ADDR:" --log-level 6
[0:0] -A PRIVATE_LOG -j DROP
[0:0] -A TCP_IN -p tcp -m tcp --dport 0:1023 -j DROP_LOG
[0:0] -A TCP_IN -p tcp -m tcp --dport 6000:6063 -j DROP_LOG
[0:0] -A TCP_IN -p tcp -m tcp --sport 53 -j PRIVATE
[0:0] -A TCP_IN -p tcp -m tcp --sport 80 -j PRIVATE
[0:0] -A TCP_IN -p tcp -m conntrack --ctstate NEW -m tcp -j UNSOLICITED
[0:0] -A TCP_IN -p tcp -j PRIVATE
[0:0] -A UDP_IN -p udp -m udp --dport 0:1023 -j DROP_LOG
[0:0] -A UDP_IN -p udp -m udp --dport 6000:6063 -j DROP_LOG
[0:0] -A UDP_IN -p udp -m udp --sport 53 -j PRIVATE
[0:0] -A UDP_IN -p udp -m udp --sport 80 -j PRIVATE
[0:0] -A UDP_IN -p udp -m conntrack --ctstate NEW -j UNSOLICITED
[0:0] -A UDP_IN -p udp -j PRIVATE
[0:0] -A UNSOLICITED -j LOG --log-prefix "UNSOLICITED:" --log-level 6
[0:0] -A UNSOLICITED -j DROP
COMMIT
# Completed on Thu Dec 27 22:43:12 2012

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications