Hi debianer! I post a question about port forwarding yesterday and got quick reply, big thanks! Now I still have sth. not clear and it can be described as:
I have a laptop in my home, which is connected to my router. Yesterday, I succeeded in open a ssh port(22) on router, and start ssh server on my laptop. Now I can access my laptop from office by ssh USER@my_home_external_ip. Also, scan port by using netcat from office: nc -vz my_home_external_ip 22 gives me: Connection to my_home_external_ip port [tcp/ssh] succeeded! Today, I tried to open another port on my router, let me call it 1234. And I set amule on my laptop to use port 1234 for both tcp and udp. Fortunatelly, I got a High ID as expected. And then I got confused. I tried to scan port 1234 from my office: nc -vz my_home_external_ip 1234 it says: nc: connect to my_home_external_ip port 1234 (tcp) failed: Connection refused However, after I remote access my laptop, launch amule on it, netcat now can: Connection to my_home_external_ip 1234 port [tcp/*] succeeded! It seems that, not only on the router, but also I should open a specific port on my laptop, otherwise netcat will not be able to connect from outside my home. I wonder why this happens and what is the mechanism behind it. Is it possible to open a port in debian, without launch certain software so I can netcat from outside to my home laptop? Thanks! -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/1ba8a1d0-b205-42a1-a9a3-393852fe4...@googlegroups.com
