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Old 04-26-2004, 05:33 PM   #1
oscuro_solitone
LQ Newbie
 
Registered: Apr 2004
Posts: 3

Rep: Reputation: 0
Unhappy read mail behind a firewall


hi,
someone can help me?

I've always used Opera to get my mail from a POP server, but now the administrator decided to use a proxy server.

This is the list of the ports for my server:
PORT STATE SERVICE
7/tcp filtered echo
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
67/tcp filtered dhcpserver
68/tcp filtered dhcpclient
69/tcp filtered tftp
111/tcp filtered rpcbind
135/tcp filtered msrpc
137/tcp filtered netbios-ns
138/tcp filtered netbios-dgm
139/tcp filtered netbios-ssn
161/tcp filtered snmp
162/tcp filtered snmptrap
199/tcp filtered smux
391/tcp filtered synotics-relay
412/tcp filtered synoptics-trap
445/tcp filtered microsoft-ds
512/tcp filtered exec
513/tcp filtered login
514/tcp filtered shell
515/tcp filtered printer
524/tcp filtered ncp
540/tcp filtered uucp
587/tcp filtered submission
593/tcp filtered http-rpc-epmap
631/tcp open ipp
692/tcp filtered unknown
1080/tcp filtered socks
1214/tcp filtered fasttrack
1234/tcp filtered hotline
1412/tcp filtered innosys
1433/tcp filtered ms-sql-s
1900/tcp filtered UPnP
1993/tcp filtered snmp-tcp-port
2049/tcp filtered nfs
3128/tcp filtered squid-http
3306/tcp filtered mysql
4444/tcp filtered krb524
5000/tcp filtered UPnP
5977/tcp filtered ncd-pref-tcp
5979/tcp filtered ncd-conf-tcp
5997/tcp filtered ncd-pref
5999/tcp filtered ncd-conf
6000/tcp filtered X11
6001/tcp filtered X11:1
6002/tcp filtered X11:2
6003/tcp filtered X11:3
6004/tcp filtered X11:4
6005/tcp filtered X11:5
6006/tcp filtered X11:6
6007/tcp filtered X11:7
6008/tcp filtered X11:8
6009/tcp filtered X11:9
6050/tcp filtered arcserve
6112/tcp filtered dtspc
6346/tcp filtered gnutella
6699/tcp filtered napster
7100/tcp filtered font-service
17300/tcp filtered kuang2
32773/tcp filtered sometimes-rpc9

Ports 80 and 110 are not accessible... There is a way to retrieve mail from a POP server?

thanks a lot!
 
Old 04-28-2004, 02:25 AM   #2
yfel
LQ Newbie
 
Registered: Apr 2004
Location: Peoria, IL, United States
Distribution: Debian Sid
Posts: 4

Rep: Reputation: 0
If you are allowed to ssh out, you can redirect your mail traffic through an ssh session.

For example, you could run the following command:

Code:
ssh -L 4110:your.mail.server.com:110 username@some-server.com
"some-server.com" could be any server to which you have ssh access, and does not have to be the same as your mail server (though that's fine if it is). After getting this set up, you would set Opera up to use localhost, port 4110 as the mail server. When opera connects to localhost, ssh will encrypt and forward the connection out through some-server.com and then to your.mail.server.com. This has the added side-benefit that nobody in your company can eavesdrop your mail traffic.

If I'm reading that nmap log right, it looks like you could do this, as ssh seems to be open.
 
  


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