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Port TCP used by Exceed

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Rahan

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Nov 27, 2006, 3:00:56 PM11/27/06
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Hi all,

i will disable telnet and i will use ssh (more secure).

Can you please tell me what is the TCP port used by Xceed to open remote
session Xterm with possibility to use GUI interface of application ?

When i run "netstat -an" it don't seem that Xceed use Telnet but other
protocol.

Can you please tell me how Xceed create a TCP session with the server ?

Thank You very much

Best Regards
Rahan

Darren Dunham

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Nov 27, 2006, 4:02:08 PM11/27/06
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Rahan <Ra...@rahan.net> wrote:
> Hi all,

> i will disable telnet and i will use ssh (more secure).

> Can you please tell me what is the TCP port used by Xceed to open remote
> session Xterm with possibility to use GUI interface of application ?

It depends on how you're accessing the remote machine.

You may be using an XDMCP query from eXceed to the remote host. If so,
that would require port 177.

All X traffic from the remote host to the X server will connect on port
6000+display. In most cases you're on display 0, so it's port 6000.

> When i run "netstat -an" it don't seem that Xceed use Telnet but other
> protocol.

No, it won't use telnet.

--
Darren Dunham ddu...@taos.com
Senior Technical Consultant TAOS http://www.taos.com/
Got some Dr Pepper? San Francisco, CA bay area
< This line left intentionally blank to confuse you. >

Rahan

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Nov 27, 2006, 4:34:58 PM11/27/06
to
Darren Dunham wrote:

> Rahan <Ra...@rahan.net> wrote:
>
>>Hi all,
>
>
>>i will disable telnet and i will use ssh (more secure).
>
>
>>Can you please tell me what is the TCP port used by Xceed to open remote
>>session Xterm with possibility to use GUI interface of application ?
>
>
> It depends on how you're accessing the remote machine.
>
> You may be using an XDMCP query from eXceed to the remote host. If so,
> that would require port 177.
>
> All X traffic from the remote host to the X server will connect on port
> 6000+display. In most cases you're on display 0, so it's port 6000.
>
>
>>When i run "netstat -an" it don't seem that Xceed use Telnet but other
>>protocol.
>
>
> No, it won't use telnet.
>

i am using port 6000 to connect to Xserver and use Xterm. Is-it secure
like ssh ?

So, i suppose that in all case, i can disable telnet without any problem.

Thanks a lot

Best Regars
Rahan

John D Groenveld

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Nov 27, 2006, 5:42:55 PM11/27/06
to
In article <456b439a$0$11678$426a...@news.free.fr>,

Rahan <Ra...@rahan.net> wrote:
>i will disable telnet and i will use ssh (more secure).
>
>Can you please tell me what is the TCP port used by Xceed to open remote
>session Xterm with possibility to use GUI interface of application ?

Exceed has a security option which will prevent remote clients
from connecting to it.
I'm away from a Windows host with Exceed installed, but I recall
its hidden in the Hummingbird control panel.
Make certain its configured that way and then start the X server.

On your Solaris host, make certain sshd_config(4) has X11Forwarding
enabled.

On your Windows host, make certain X11 forwarding is enabled.
With putty, its the -X option.

c:\putty.exe -X -ssh rahan@solaris

John
groe...@acm.org

Darren Dunham

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Nov 27, 2006, 5:50:59 PM11/27/06
to
Rahan <Ra...@rahan.net> wrote:
> Darren Dunham wrote:
>> Rahan <Ra...@rahan.net> wrote:
>>
>>>Hi all,
>>
>>>i will disable telnet and i will use ssh (more secure).
>>
>>>Can you please tell me what is the TCP port used by Xceed to open remote
>>>session Xterm with possibility to use GUI interface of application ?
>>

>> All X traffic from the remote host to the X server will connect on port


>> 6000+display. In most cases you're on display 0, so it's port 6000.

> i am using port 6000 to connect to Xserver and use Xterm. Is-it secure
> like ssh ?

Secure means many different things. If you mean is it encrypted, then
no.

Most SSH clients allow for tunneling of X traffic. So you can send the
traffic (encrypted) via SSH to the local machine, where it then hops
over to port 6000.

Rahan

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Nov 28, 2006, 3:30:13 PM11/28/06
to
John D Groenveld wrote:

i started a session SSH by using putty with command :
"c:\putty.exe -X -ssh root@minux"

i always have the error to start GUI application :

[root@minux root]# xclock
X connection to localhost:10.0 broken (explicit kill or server shutdown).

any idea please ?

Thanks a lot
Rahan

John D Groenveld

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Nov 28, 2006, 6:45:39 PM11/28/06
to
In article <456c9bf6$0$20405$426a...@news.free.fr>,

Rahan <Ra...@rahan.net> wrote:
>i started a session SSH by using putty with command :
>"c:\putty.exe -X -ssh root@minux"

From a security perspective, I suggest you set PermitRootLogin back to
no in sshd_config(4), but that's unrelated your problem.

>i always have the error to start GUI application :
>
>[root@minux root]# xclock
>X connection to localhost:10.0 broken (explicit kill or server shutdown).

Is the Exceed X server running?

What version of Exceed are you using?

John
groe...@acm.org

Rahan

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Nov 29, 2006, 2:57:55 PM11/29/06
to
John D Groenveld wrote:


how can i link Putty to Exceed please ?

Message has been deleted

John D Groenveld

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Nov 29, 2006, 8:37:46 PM11/29/06
to
In article <ekfplf$p2q$1...@neuromancer.cse.psu.edu>,

John D Groenveld <groe...@cse.psu.edu> wrote:
>Exceed has a security option which will prevent remote clients
>from connecting to it.

With Exceed 9, "Host Access Control List" options are in the
"Security, Access Control and System Administrator" control panel
under the "Configuration" in the Exceed Toolbar.

Out of the box, its set to Disabled (any host access) which
is the equivalent to "xhost +".

John
groe...@acm.org

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