[TriLUG] accessing mail.trilug.org, port 993 - solved
porter at trilug.org
Fri Dec 31 10:36:59 EST 2004
Thanks for your summary, Tanner. I have found the problem. I
rebooted my DSL modem and everything starting working again.
Last week, I had tried rebooting my firewall box (a Linux box
running iptables), but for some reason, it never occurred to me
to cycle power on the DSL modem.
I feel a little stupid for assuming that the problem was on the
Trilug end. But having never used traceroute before, it sure
looked like I could get 99% of the way to moya.
> 2. Alan, is your DSL connection on kr4jb.dyndns.org? If so, then
> I think the problem is on your end. From dargo I can "traceroute
> -I" all the way to your host but on moya it fails at the very last step.
My iptables rules block pings. So that explains why you can't traceroute
However, I can now traceroute -I mail.trilug.org, whether I block pings
or not. This must be because on outbound traceroutes, I am not looking
for pings in return. I am looking for ICMP TLL errors?
Either way, for now, I have turned ICMP/ping blocking off.
> That, to me, indicates that your system is trashing packets to/from
> 18.104.22.168. Try checking your syslogs. If you're running iptables,
> it should log something when you drop a packet. Alternatively, turn
> off your firewall and see if that makes things work.
Last week, I did just that. I turned off the firewall and I still could not
reach moya. Now I see that my DSL modem was the culprit.
Thanks again to everyone for the troubleshooting help. I can now add
a new tool (traceroute) to my tool box.
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