iptables question

[Margaret Doll]

On Jul 11, 2005, at 5:21 PM, Scot L. Harris wrote:

> On Mon, 2005-07-11 at 17:08, Margaret Doll wrote:
>
>> I am having problems with getting Fedora 3 to Display xwindows across
>> the network.
>>
>> I have variations of RedHat system from 7.3 to Enterprise 3 and
>> Fedora 3.  I use ipchains or iptables along with /etc/hosts.allow to
>> control access to the systems.
>>
>> The Fedora 3 systems are allowing ssh/sftp into them from specific
>> addresses only and allowing nfs mounts, but they are not allowing me
>> to ship a DISPLAY across the network.
>>
>
> You need to make sure you have X11 forwarding enabled with ssh.
>
> You can do this by modifying the sshd_config file or by using the - 
> X or
> -Y options when you startup ssh.
>
> You will also need to use xhost to allow another system to send a
> dispaly to your system.  xhost + opens up permissions to all systems.
> You can refine that to allow specific systems.
>
> It would help if you posted the specific error your are getting as  
> well
> as specific commands you are using to attempt this.
>
> If you use ssh to do the x11 forwarding for you you don't need to mess
> with iptables as long as you allow ssh to connect to the remote  
> system.
>
>
> -- 
> Scot L. Harris
> webid at cfl.rr.com
>
> Honesty is for the most part less profitable than dishonesty.
>         -- Plato
>
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I have


#X11Forwarding no
X11Forwarding yes
#X11DisplayOffset 10

in /etc/ssh/sshd_config

I have the systems names in each of the computers' /etc/hosts files.

My session is

xhost computer1
ssh myaccount/computer1

login procedure

export DISPLAY=computer2:0

acroread

Error:  Can't open DISPLAY: computer2:0


>