SSH to port 22 over LAN: "Connection refused"

Fester Bestertester <fbt RemoveThis @fbt.net> wrote:

> The router (U-Verse 3800HGVB) should allow SSH connections within the LAN,
> correct?

If you are connecting between two computers on the same LAN, the router
is not involved.

> I'm trying to connect between 2 Macs (from a Leopard system to a Tiger
> system) via SSH but get "Connection refused".
>
> I'm using port 22.
>
> Is some setup required on the remote Mac? Or another port?

Check the obvious: on the Mac you are trying to connect TO, you must
have "Remote Login" enabled in System Preferences > Sharing.

It is also possible that the firewalll on the destination machine might
be interfering with the connection. If you are running any third-party
firewall software, disable it. The built-in firewall (in System
Preferences > Sharing > Firewall on 10.4.11) should automatically allow
incoming connections for anything you have enabled under the Services
tab.

> A good web page for learning "SSH basics"?

Pass. Google for it?

--
David Empson
dempson RemoveThis @actrix.gen.nz

In article
<0001HW.C6A4A65900130E1CB08A39AF.DeleteThis@news.eternal-september.org>,
Fester Bestertester <fbt.DeleteThis@fbt.net> wrote:

> The router (U-Verse 3800HGVB) should allow SSH connections within the LAN,
> correct?
>
> I'm trying to connect between 2 Macs (from a Leopard system to a Tiger
> system) via SSH but get "Connection refused".
>
> I'm using port 22.
>
> Is some setup required on the remote Mac? Or another port?
>
> A good web page for learning "SSH basics"?
>
> Thanks.

As has been mentioned, did you enable System Preferences ->
Sharing -> Remote Login?

Do you have your destination Mac's Firewall enabled? If so, try
disabling it during your initial tests.

start with

ssh -v -v -v username.DeleteThis@addr.of.other.mac

If you have another system where ssh does work, repeat the
ssh -v -v -v
to that system and compare the output between the working and the
failing ssh connections.

If you still fail to login, read the

man ssh

man page and look for "permission", then make sure that all the
mentioned directories and files have the correct permissions. If
ssh finds the security on various files too weak, it will not make
a connection.

Bob Harris

In article <nospam.News.Bob-28D043.20384211082009.TakeThisOut@news.verizon.net>, Bob Harris <nospam.News.Bob.TakeThisOut@remove.Smith-Harris.us> writes:
>In article
><0001HW.C6A4A65900130E1CB08A39AF.TakeThisOut@news.eternal-september.org>,
> Fester Bestertester <fbt.TakeThisOut@fbt.net> wrote:
>
>> The router (U-Verse 3800HGVB) should allow SSH connections within the LAN,
>> correct?
>>
>> I'm trying to connect between 2 Macs (from a Leopard system to a Tiger
>> system) via SSH but get "Connection refused".
>>
>> I'm using port 22.
>>
>> Is some setup required on the remote Mac? Or another port?
>>
>> A good web page for learning "SSH basics"?
>>
>> Thanks.
>
>As has been mentioned, did you enable System Preferences ->
>Sharing -> Remote Login?
>
>Do you have your destination Mac's Firewall enabled? If so, try
>disabling it during your initial tests.
>
>start with
>
> ssh -v -v -v username.TakeThisOut@addr.of.other.mac
>
>If you have another system where ssh does work, repeat the
> ssh -v -v -v
>to that system and compare the output between the working and the
>failing ssh connections.
>
>If you still fail to login, read the
>
> man ssh
>
>man page and look for "permission", then make sure that all the
>mentioned directories and files have the correct permissions. If
>ssh finds the security on various files too weak, it will not make
>a connection.
>
> Bob Harris

The first thing he might wish to do is to see if he even gets to
the remote system's ssh server.

$ telnet remote-system-name-or-IP 22
Trying remote-system-name-or-IP...
Connected to remote-system-name-or-IP.
Escape character is '^]'.
SSH-2.0-OpenSSH_5.1
<============ press carriage return here...
Protocol mismatch.
Connection closed by foreign host.
$

If you don't get this far, look into whether or not the ssh service
is running on the remote or for a firewall block path to the remote
system.
--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)ORG

http://www.quirkfactory.com/popart/asskey/eqn2.png

"Well my son, life is like a beanstalk, isn't it?"