VNC: vncviewer no route to host on same lan

[Richard Emberson]

Scot L. Harris wrote:

>On Sun, 2005-03-27 at 14:46, Richard Emberson wrote:
>  
>
>>I've got two Fedora bozes (A & B) on the same lan (connected through a 
>>netgear switch).
>>They can ping each other and ssh bach and forth. There is a firewall 
>>between the
>>lan and the internet (the firewall is NOT between the two machines).
>>
>>On machine A, I've got a vncserver running. On machine A, I can run the 
>>command
>> > vncviewer A:1
>>successfully; self vnc-ing works.
>>
>>On machine B, when I run the command
>> > vncviewer A:1
>>I get
>>
>>main:   unable to connect to host: No route to host (113)
>>
>>what wrong?
>>    
>>
>
>Most likely you have iptables running on the machine A and is blocking
>port 5901.  Test it by disabling iptables on machine A.  If that works
>then open port 5901.
>
>  
>
Thanks - that was it. I added:

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT

to /etc/sysconfig/iptables and the Sun is shining once again.