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Re: [PLUG] Verizon DSL/incoming conn. problem
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On Wed, 23 Jul 2003, Stephen Gran wrote:
> On Wed, Jul 23, 2003 at 10:49:46PM -0400, Sandhitsu R Das said:
> >
> > I just set up my linux box with roaring penguin pppoe. It works fine
> > except for one thing. I don't seem to able to connect to my machine
> > from the outside world.
> >
> > When I had DCANet I had a static IP so it was easy. This time I set up
> > DynDNS and tried to connect - the name resolution seems to be working
> > fine.
> >
> > I can't even ping my machine from outside although I can traceroute
> > all right.
> >
> > If I ping from a local shell, I get the following error: sendto: No
> > buffer space available
> >
> > Same error with nmap.
>
> This last sounds like lo might not be up. Perhaps this is causing the
> rest, although I am not sure. Any errors in syslog or anywhere else
> that raise eyebrows?
>
>
Turns out the roaring penguin pppoe software messed with my firewall
settings and set everything including ICMP echo to DENY. I'm impressed! I
turned incoming port 22 connections back on in their firewall script and
I can ssh from outside now. But "ping localhost" still doesn't work - I
don't know why. The firewall only denies stuff on ppp0, not on lo.
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