ssh problem.

screwzm · 11-16-2012, 01:08 AM

I can ping hostb from hostb, but when I try to ssh into hostb from hosta:

Code:

ssh hostb command

It prompts the error msg as below:

Code:

ssh: connect to host hostb port 22: Connection timed out ...

What's the problem? Can anyone give me any clue on how to solve this problem. Any help is appreciated a lot. Thanks.

evo2 · 11-16-2012, 01:22 AM

Hi,

are you sure sshd is running on hostb? Can you ssh from hostb to hostb? Eg on hostb

Code:

ssh localhost

Evo2.

screwzm · 11-16-2012, 01:31 AM

Quote:

Originally Posted by evo2

Hi,

are you sure sshd is running on hostb? Can you ssh from hostb to hostb? Eg on hostb

Code:

ssh localhost

Evo2.

I am sure that sshd is running in hostb, I can ssh localhost within hostb.
May this caused by pam setting? Totally lost..

druuna · 11-16-2012, 01:38 AM

Can you telnet from hosta to hostb port 22?

Code:

# from hosta
telnet hostb 22

If that times out then either sshd isn't running (correctly) and/or you have a firewall issue and/or the hostname is wrongly resolved.

icarusthecow · 11-20-2012, 11:35 AM

what distribution is the sshd running on? If its centos or opensuse or something similar, iptables is likely running and blocking the packets. Alternatively is the server behind a router?

evo2 · 11-21-2012, 05:38 PM

HI,

Quote:

Originally Posted by screwzm

I am sure that sshd is running in hostb, I can ssh localhost within hostb.
May this caused by pam setting? Totally lost..

As I suggested in my first post: check the log on the machine running sshd.

Evo2.

jsaravana87 · 11-21-2012, 11:09 PM

Quote:

I can ping hostb from hostb, but when I try to ssh into hostb from hosta:

ssh: connect to host hostb port 22: Connection timed out

1.Check your firewall setting on hostb .Whether you had opened the Port 22 to host A interface ipaddress.

2.Check out Tcp wrappers hosts.deny whether you had denied ssh access

2.How do you try to login from hosts A to hostB using ssh -IPADDRESS ,hostname .Try out using ipadress .

3.ssh -v hostb debug using verbose o/p