SSH connection refused using linux box

90coders · 10-17-2003, 07:13 AM

I have 3 machines:

A. web server with RH7.2
B. LAN server with RH7.1
C. Laptop with Win98

I can SSH connect to the web server with my laptop using PuTTy and WinSCP3. No problem here.

I can SSH connect to the LAN server with my laptop using PuTTy and WinSCP3. No problem here.

But when I try to SSH connect to the web server using my LAN server I get the "Secured connection to xxx.xxx.xxx.xxx refused" error.

I'm wondering why?

Both laptop and LAN server are connected to a proxy for internet access. I can browse the web and logon to my secure pages using the LAN server.

I tried using gFTP and the command line on my LAN server to SSH to the web server but no go.

My LAN server ssh_config file has the following entries:

Code:

Host *
	ForwardX11 yes
	Protocol 2,1

Is ther anything else I have to set up in the LAN server?

Thanks in advance.

cyph3r7 · 10-17-2003, 09:17 AM

could be a couple of things......do you run a firewall on the LAN Server? If so make sure you have a statement that allows connections between those boxes. Or, how about your hosts.deny? Blocking anything there?

Gut says it's a ruleset on the LAN Server.

TheIrish · 10-17-2003, 01:25 PM

Maybe I'm going to say something wrong...
When you use ssh for connecting for the first time to an host, it generates RSA keys. If the host you want connect to has recently changed its key (reinstallation, deletion ecc.) ssh recognises something weird is going on. This can be the case.
The laptop probably has the newer key and this seems obvious since i suppose you rarely use the server console. In this case you just have to delete the keys in the LAN server.
This COULD be one of the reasons.

90coders · 10-18-2003, 02:53 AM

My LAN server RH7.1 is a vanilla install. During the installation I did opt to install the firewall but haven't touched it since.

host.deny is empty as well as host.allow.

I am reading up on iptables (a lot to digest) but really don't know what to look out for. The contents of my iptables file is the default settings. I also read (http://www.netfilter.org/documentati...ial.html#AEN33) that RH7.1 uses ipchains and should be upgraded to use iptables. Still not clear on this and thus haven't done the upgrade. Can this be the cause?

Re keys. I read somewhere in this forum a HowTo setup passphrase so I don't have to enter my password everytime I logon to the Web Server. I went through the suggested steps but it seems that it'll only work if you can get connected.

I also suspect it's some rule set that I have to configure but where and what do I enter?

I'd really appreciate some guidelines on how to do this. I guess it's obvious that I'm no expert at this.

Thanks for the assist.