Thanks Joe, Brian, Murphy As I post above, I forgot to say all these experiments were done in my home on my laptop... Now I am in my office and re-do all this experiment. To be short, now all experiment which is done with ip address works well, while if I do ssh USER@DEBIAN, it will say:
ssh: Could not resolve hostname debian: Name or service not known I am wondering, who(or what device,server) will resolve the hostname? Is it possible to resolve my laptop's name from my office?? 2012年10月11日木曜日 1時00分03秒 UTC+9 houkensjtu: > Hi debianer! > > I am a newbie both of debian and networking... > > Recently I am trying to connect my home laptop(I have a router in my home) > from office. I read several articles on port forwarding. And I succeeded in > opening an 22 port on my router, also I started ssh server on my home laptop. > > > > (suppose my username at home is USER, and my laptop is called DEBIAN) > > > > I did several experiment and I got confusing in some of its result. > > > > 1. ssh USER@DEBIAN > > > > works well!! > > > > 2. nc -vz my_home_external_ip 22 > > [my_home_external_ip] 22 (ssh) : Connection refused > > > > I cant understand why is it. Because I have actually succeeded in test 1! > > > > 3. ssh -l USER my_home_external_ip > > ssh: connect to host my_home_external_ip port 22: Connection refused > > This also doesnt work! I thought it should be equivalent to test 1, but > things just dont work. > > > > Any one can explain this? > > > > > > -- > > 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/95c24d80-4052-429d-8658-cf3f447ff...@googlegroups.com -- 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/84255302-35f8-4009-9f05-af25a076d...@googlegroups.com
