Re: MSN and Yahoo Block through IPTABLES

[Jamie Pratt <jamie@nucdc.org>]

Doesn't blocking tcp port 5050 outbound pretty much kill yahoo instant 
messenger clients? (Last I checked, it wouldn't connect for me at home 
until i opened 5050, but then again, maybe they got smarter like msn?)

jamie

Asim Ejaz Butt wrote:
> I have tried DROP policy as well but not succeeded.
> 
> One thing that I should mentioned that my Internet setup is upload through
> normal DDP and download through Satellite Downlink and both are on separate
> systems. That is one linux based PC where I am running IPTABLES used to
> upload request and the 2nd PC which is a Satellite Receiver used for
> download. So my upload request goes to one system and download request
> received from another system.
> 
> Is that help U to find out that particular problem of blocking MSN/Yahoo
> chat using IPTABLES.
> 
> Regards,
> Asim
> ----- Original Message -----
> From: "David Busby" <busby@pnts.com>
> To: "Asim Ejaz Butt" <asim.butt@streaming-networks.com>;
> <netfilter@lists.netfilter.org>
> Sent: Wednesday, June 25, 2003 11:49 PM
> Subject: Re: MSN and Yahoo Block through IPTABLES
> 
> 
> 
>>Can you set policy to DROP then only allow what you need?
>>
>>/B
>>
>>
>>----- Original Message -----
>>From: "Asim Ejaz Butt" <asim.butt@streaming-networks.com>
>>To: <netfilter@lists.netfilter.org>
>>Sent: Wednesday, June 25, 2003 03:23
>>Subject: MSN and Yahoo Block through IPTABLES
>>
>>
>>
>>>Hello Gurus,
>>>
>>>I am trying to block MSN and Yahoo Instant Messengers with my LAN using
>>>IPTABLES. Following commands are used to block them but unsuccessful.
>>>
>>> /sbin/iptables -A FORWARD -p tcp -s 192.168.5.85 --dport 1863 -j REJECT
>>> /sbin/iptables -A FORWARD -p tcp -s 192.168.5.85 -d 64.4.0.0/18 -j
> 
> REJECT
> 
>>> /sbin/iptables -A FORWARD -d cs.yahoo.com -j REJECT
>>> /sbin/iptables -A FORWARD -d scsa.yahoo.com -j REJECT
>>>
>>>Anyone help in blocking them through IPTABLES.
>>>
>>>Asim Ejaz Butt
>>>asim.butt@streaming-networks.com
>>>
> 
> 
> 
> 
>