[CentOS] Xnest unable to connect with firewall enabled

Hi all,

I have worked on both CentOS 5.2 and CentOS 5.3. In CentOS 5.2, I could
connect to a remote X-server using Xnest binary provided by the package
xorg-x11-server-Xnest-1.1.1-48.41.el5 with firewall settings enabled. I
enabled the firewall settings from system-config-securitylevel.
Now in CentOS 5.3 with firewall settings enabled, I am unable to connect to
the remote X-server using Xnest (xorg-x11-server-Xnest-1.1.1-48.52.el5). To
successfully connect, I have to either disable firewall settings or filter
the TCP ports on which Xnest connects to the remote server.
Is there an issue regarding firewall settings in CentOS 5.3 ? I want to
connect to the remote X-server without disabling the firewall settings. How
is possible ?

Thanks in advance.
Siddharth
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