Help with network

[Eric Tanguy]

I configure vino server to run and it seems to run :

$lsof -ni
COMMAND    PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
vino-serv 1695 tanguy-e   15u  IPv6  23235      0t0  TCP *:vnc-server 
(LISTEN)
vino-serv 1695 tanguy-e   16u  IPv4  23236      0t0  TCP *:vnc-server 
(LISTEN)

The port used seems to be 5900 so i enable 5900 tcp and udp in 
system-config-firewall

I can run telnet 192.168.1.14 5900 from local but not from another 
computer on the same network.

How can i know where the problem come from ?
Thanks
Eric