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Re: open ssh connection



On 01/11/12 19:39, Kristoffer Gustafsson wrote:
I can connect to the machine inside linux using localhost.
But when I try this in windows using putty, it doesn't work.

When you say "it doesn't work", do you mean that it connects but doesn't allow you to authenticate, or do you get a connection-refused?

If it's not connecting at all, you'd want to check your /etc/ssh/sshd_config file for a "ListenAddress" line to see if your sshd is only listening on the loopback (127.0.0.1) instead of on an external IP address (such as 192.168.x.y or 10.x.y.z). If there's no such "ListenAddress" line in your sshd_config file, it suggests to me that your Windows machine has a firewall controlling outbound connections to port 22. I'd check there next. This is presuming that your config file has the default "Port 22" as it's listening port. However, you'd have to have changed this yourself since it's not the default.

If you're successfully connecting, but can't log in, check the same sshd_config file. If you're trying to log in remotely as root and the "PermitRootLogin" option is set to "no", you'll have to log in as your user and then "su" to root or use sudo. Otherwise, check for an "AllowUsers" or "AllowGroups" option which may have been configured to allow/deny only certain users/groups.

-tim



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