How-to authorize UDP connections for a range of ports and a single IP ?

Hi everybody,

I have a notebook with Slackware Linux 10.2, vanilla kernels 2.6.15.4 & 
2.6.16-rc4 and an ADSL connection to Internet from ISP Free in Paris, France.
The "ADSL modem" I got from this ISP, called a "Freebox" is a triple play one: 
it delivers Internet + TV + telephone (VOIP)
I have no LAN.

My ISP offers a new service : TV streams delvered to the computer (useful for 
me as I have no TV). It uses an rstp server -- I don't know exactly what that 
is ;-) and the player I use (vlc or videolan) needs to get the streams that 
bi-diriectionnal (I think) traffic for UDP protocol be authorized between the 
"freebox" and my computer, for ports in the range 1024 - 65536.

In short : I need to authorize bi-directionnal traffic for all UDP ports in 
the range 1024-65535 between my box and IP 2I2.27.38.253

I was not able to set this up with Guarddog 2.4.0. I tried to make a dmz zone 
with the IP 2I2.27.38.253 but did'nt success. And I don't want to open all 
these ports to whole Internet.

How should I set up guarddog for this ?

PS1: please excuse my bad English and my silly questions (see PS2)
PS2: I know almost nothing about TCP/IP & networking
PS3: I saw in some fora people speaking abour ip forwarding to restrict the 
range of authorized ports but isn't that only for routers ? I don't know how 
to do that anyway
PS4 The feebox can be put in router mode - don't know if this can help either

Thanks in advance for the help.

Didier Spaier


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