[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: AW: [suse-security] Can't access from outside

Hi !

> I try to telnet from outside, but there's no response. From internal or my 
> other servers that in one subnet, I get this answer
> telnet reynaldi.dyndns.org 25
> Trying
> Connected to reynaldi.dyndns.org.
> Escape character is '^]'.
> 220 arie.reynaldi.dyndns.org ESMTP Postfix
> But from other place I got no response
> telnet reynaldi.dyndns.org 25
> Trying
> telnet: connect to address Connection timed out
> And in my /var/log/mail, there's no messages that shows any connection from 
> ex. yahoo.com or any other servers. 
--> I could image two options:

1) your ISP is not forwarding packets to port 25
==> talk to the tech people of your ISP

2) the packets are blocked by the firewall
==> try to enable logging of all packets in the SuSEfirewall2 script, 
section 16


Then have a look in /var/log/messages or /var/log/firewall to find out 
why the packets are dropped.


Am Hasenberg 26         office: Institut für Atmosphärenphysik
D-18209 Bad Doberan             Schloss-Straße 6
Tel. ++49-(0)38203/42137        D-18225 Kühlungsborn / GERMANY
Email: schoech@xxxxxxxxxxxx     Tel. +49-(0)38293-68-102
WWW: http://armins.cjb.net/     Fax. +49-(0)38293-68-50

Check the headers for your unsubscription address
For additional commands, e-mail: suse-security-help@xxxxxxxx
Security-related bug reports go to security@xxxxxxx, not here