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Connect to Debian from Win with ssh/putty - Error: "connection timed out"

I'm trying to ssh from my Win 8 machine using putty into a Linux Debian 6. But when I try in the last 3 day I get only: Error: connection timed out.

This is the output of netstat -ntlp | grep 22

Code:

root@95-170-82-133:/# netstat -ntlp|grep 22

tcp        0      0 0.0.0.0:22              0.0.0.0:*              LISTEN      6630/sshd      

tcp6      0      0 :::22                  :::*                    LISTEN      6630/sshd      

root@95-170-82-133:/#

Can anyone tell me how can I solve this error?

Quote:

Originally Posted by WildBoy_from_ITALY (Post 5082156)

I'm trying to ssh from my Win 8 machine using putty into a Linux Debian 6. But when I try in the last 3 day I get only: Error: connection timed out.

This is the output of netstat -ntlp | grep 22

Code:

root@95-170-82-133:/# netstat -ntlp|grep 22

tcp        0      0 0.0.0.0:22              0.0.0.0:*              LISTEN      6630/sshd      

tcp6      0      0 :::22                  :::*                    LISTEN      6630/sshd      

root@95-170-82-133:/#

Can anyone tell me how can I solve this error?

I don't know what kind of firewall Debian puts in place by default, but you might want to check if port 22 is open.

Also, can you ping to your Linux system?
And can you ping back from the Linux system to Windows?

this is the result of the ping to 95.170.82.133
http://oi43.tinypic.com/23ma9p4.jpg

I think linux answer back correctly

Quote:

Originally Posted by WildBoy_from_ITALY (Post 5082179)

this is the result of the ping to 95.170.82.133
http://oi43.tinypic.com/23ma9p4.jpg

I think linux answer back correctly

Yes.

To check the firewall, can you run the command iptables -S INPUT on the Linux system? You need to be root to do that.

Quote:

Originally Posted by berndbausch (Post 5082189)

Yes.

To check the firewall, can you run the command iptables -S INPUT on the Linux system? You need to be root to do that.

I just saw that you have a public IP address. I can ping 95.170.82.133 as well, and I can also connect to it with ssh. The problem must be your putty configuration.

Code:

[root@athlon64 pam_unix]# ping 95.170.82.133

PING 95.170.82.133 (95.170.82.133) 56(84) bytes of data.

64 bytes from 95.170.82.133: icmp_seq=1 ttl=49 time=288 ms

64 bytes from 95.170.82.133: icmp_seq=2 ttl=49 time=283 ms

^C

--- 95.170.82.133 ping statistics ---

3 packets transmitted, 2 received, 33% packet loss, time 2216ms

rtt min/avg/max/mdev = 283.666/286.327/288.989/2.714 ms

[root@athlon64 pam_unix]# ssh 95.170.82.133

The authenticity of host '95.170.82.133 (95.170.82.133)' can't be established.

RSA key fingerprint is 23:d6:f7:c3:54:68:60:e2:e7:41:f2:16:7a:3e:e1:24.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '95.170.82.133' (RSA) to the list of known hosts.

root@95.170.82.133's password:

Here the output of firewall

Code:

root@95-170-82-133:/home/emanuel# iptables -S INPUT

-P INPUT DROP

-A INPUT -j ufw-before-logging-input 

-A INPUT -j ufw-before-input 

-A INPUT -j ufw-after-input 

-A INPUT -j ufw-after-logging-input 

-A INPUT -j ufw-reject-input 

-A INPUT -j ufw-track-input 

root@95-170-82-133:/home/emanuel#

PS: thank for your interest! ;)

Quote:

Originally Posted by berndbausch (Post 5082194)

I just saw that you have a public IP address. I can ping 95.170.82.133 as well, and I can also connect to it with ssh. The problem must be your putty configuration.

Mumble, with the same conf I can access via Putty to many other server, but from 3 day ago I can't connect to 95.170.82.133. I don't understand why!

I try to connect to 95.170.82.133 from another machine (Win 7) with a new installation of Putty but I still can't connect.

Quote:

Originally Posted by WildBoy_from_ITALY (Post 5082205)

Mumble, with the same conf I can access via Putty to many other server, but from 3 day ago I can't connect to 95.170.82.133. I don't understand why!

I can see that the Ubuntu firewall does things quite differently than my Centos firewall :)

Still, the fact is that I can connect to your system from thousands of kilometers away (if it is in Italy). Unfortunately I don't know enough about putty to help you.
You could find other SSH applications that run on Windows and test with them. Or boot your PC with a Linux LiveCD and see what happens. As I lean more towards UNIX, I use Cygwin and OpenSSH on my Windows PC.

Thank you so much berndbausch! You help me to debug my system.
In fact, with Aptana terminal that uses OpenSSH can connect to the remote server.

Greetings from Italy