On 8/4/2014 7:28 AM, Tom Eastep wrote:
> On 8/4/2014 1:17 AM, Niall O Broin wrote:
> 
>>
>> When I moved the shorewall start script to run level 2, behaviour is
> as expected and desired.
>>
>> Capturing the output of iptables -L in both cases, I found the
> following extra rules when shorewall started in run level S
>>
>> Chain INPUT (policy DROP)
>> target     prot opt source               destination
>> ACCEPT     udp  --  anywhere             anywhere             udp dpt:domain
>> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:domain
>> ACCEPT     udp  --  anywhere             anywhere             udp dpt:bootps
>> ACCEPT     tcp  --  anywhere             anywhere             tcp dpt:bootps 
>>
>> Chain FORWARD (policy DROP)
>> target     prot opt source               destination
>> ACCEPT     all  --  anywhere             192.168.1.0/24       state 
>> RELATED,ESTABLISHED
>> ACCEPT     all  --  192.168.1.0/24       anywhere
>> ACCEPT     all  --  anywhere             anywhere
>> REJECT     all  --  anywhere             anywhere             reject-with 
>> icmp-port-unreachable
>> REJECT     all  --  anywhere             anywhere             reject-with 
>> icmp-port-unreachable
>>
>> As the VMs run with 192.168.1.0/24 addresses these rules in FORWARD
>> are less than helpful. Any ideas as to why they are appearing there
>> when run in run level S but not when run in run level 2?
> 
> First of all, the output of the raw 'iptables -L' command is almost
> useless. You should use 'iptables -L -nv' or 'shorewall show'.
> 
> As to why the rules are there, I suspect that you have another iptables
> configuration tool on that system and that it is started after Shorewall
> does when Shorewall is configured to run in level S.
> 

The other possibility is that Shorewall is failing to start at runlevel
S and that those are the 'routestopped' (a.k.a 'stoppedrules' in later
versions) rules. If you have configured an INITLOG, it might give you a
clue.

-Tom
-- 
Tom Eastep        \ When I die, I want to go like my Grandfather who
Shoreline,         \ died peacefully in his sleep. Not screaming like
Washington, USA     \ all of the passengers in his car
http://shorewall.net \________________________________________________

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