I have a Debian computer acting as a server at home. It has a dovecot+postfix mail server, an SSH server, an apache server, and everything you would expect from a do-everything server.
At home, it is connected via ethernet thanks to PLC. The PLC I bought was a cheap one, and occasionally, it stops working.
I'm very far from home (I'm in Africa right now, and my computer is in Europe), and the PLC just stopped working. My computer is behind a NAT, but I took care forwarding all ports to the ethernet connection that is now dead, and I'm left with the WiFi connection I didn't specifically forward any port to.
I'm looking for a way to connect to my computer, I forgot to forward a few ports through the WiFi connection before leaving, and strangely enough, the Apache server seems to answer all my requests: I can access to my WebSite. Right now, I'm mostly concerned with emails, because they were all coming to the ethernet connection, and now I'm afraid they'll be lost. I have mosh
installed if it can help.
Here is a little sum up/TL;DR:
- Computer: Debian testing acting as a server
- Connection: Ethernet + WiFi
- NAT settings: Forwards a lot of TCP ports to Ethernet, none to WiFi
- Issue: Ethernet stopped working, so I'm only left with WiFi
- Additional informations: The Apache server seems to answer requests, also there is no specific port forwarding. I have a digital ocean server, and I can modify my dns records to forward anything to this specific server.
- Question: How could I establish a connection to my computer? Or at least, how would I go saving all emails to another server
nmap tcp scan report:
Not shown: 984 filtered ports
PORT STATE SERVICE
21/tcp open ftp
80/tcp open http
554/tcp open rtsp
1720/tcp open H.323/Q.931
6000/tcp closed X11
6001/tcp closed X11:1
6002/tcp closed X11:2
6003/tcp closed X11:3
6004/tcp closed X11:4
6005/tcp closed X11:5
6006/tcp closed X11:6
6007/tcp closed X11:7
6009/tcp closed X11:9
6025/tcp closed x11
6059/tcp closed X11:59
7070/tcp open realserver
nmap udp scan report:
Not shown: 991 filtered ports
PORT STATE SERVICE
53/udp open|filtered domain
67/udp open|filtered dhcps
68/udp open|filtered dhcpc
80/udp open|filtered http
137/udp open|filtered netbios-ns
514/udp open|filtered syslog
520/udp closed route
1234/udp open|filtered search-agent
1434/udp open|filtered ms-sql-m