Re: Odd iptables issue

Well, I found one part of the failure... for some reason, iptables 
insinuates taht ppp+ is valid, but when I changed the rule to be ppp0 it 
seems to have solved the routing issues, because now ppp0 shows packets 
going back down stream, but they get lost again somewhere on this end.  
Making progress... ugh.

~Phil


On 04/27/2010 02:19 PM, Phillip Davis wrote:
> I know what must be the problem, but I can't find the source of the
> failure.  On the poptop server, I've got iptables set basically wide
> open now, but tried more restricted before.  I can see data going from
> ppp0 through eth1 to the work network hosts, and them replying ONLY when
> I look at eth1.  But on the same host, ppp0 still shows no reply
> packets... its like the data goes from vpn link, through ppp0 thru eth1
> to that lan, host replies, gets thru eth1, and then the iptables rules
> drop it when it tries to go back to ppp0... Why?  I'm sure there's soem
> simple rule I'm missing, but I can't for the life of me figure it out.
> I've even gone so far as to do:
>
> iptables -I INPUT -i ppp+ -j ACCEPT
>
> just to see if I could get it to work... and it doesn't.  I've tried:
>
> iptables -I OUTPUT -o ppp+ -j ACCEPT
>
> to no avail.
>
> Ideas?
>
> ~Phil
>
>
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