cvsup can't work

[wanakahalugi]

hi all,

I installed FreeBSD5.3REL on my PC, and I want to update the source
tree and ports collection using cvsup.
To do that I copy the stable-supfile to /etc directory and set its
default host tag to the nearest mirror, and also set only the ports
that I want to update to save bandwith.
Everything is work fine except when I run the command # cvsup
/etc/stable-supfile the response from the mirror server is like this :

[root at iteo root]# cvsup /etc/stable-supfile                
Cannot connect to cvsup.id.FreeBSD.org: Connection refused 
Will retry at 09:31:28

I use netstat to look what happen inside those error message, and I
found this one :

[cakra at iteo cakra]$ netstat                                                   
Active Internet connections                                                   
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4       0      0  192.100.40.14.53875    mirror.cbn.net.i.cvsup SYN_SENT   

The PC never ESTABLISHED the connection to the server it's only do the
SYN_SENT. Why it happen? Is cvsup using certain ports so I can make
some proper change on my firewall?