Using ACL to prevent Yahoo! streaming video

[GeneralDzur]

i'm new here, as well as fairly new to Cisco routers. I have a very basic understanding of ACL's and Extended ACL's. We have a problem on our network that people keep visiting the LaunchCast/Yahoo music/video streaming portal. This is especially harmful on our network as we have limited bandwidth available (satellite connection) on an already slow network. How would i set up an ACL to block this? i'd appreciate any advice

 

[vipergg]

You would need to find out what port the video is using then set up and acl blocking that port onto the network . Be are that if you do this if their are other apps that use that particular port it could break those along with blocking yahoo video .

 

[GeneralDzur]

So I couldn't use a standard ACL to simply block the
server(s) hosting the video/audio stream? We're on a government network (Army in Iraq) and video streaming isn't really needed anyway; however, we would like to leave the ability to use Webcams open (over chat programs). Any ideas?

 

[vipergg]

If you know the addresses of the servers that are streaming, sure you could block them that way . If you deny the addresses make sure to use a permit statement at the at the end otherwise everything will be blocked due to an implicit deny at the end of every ACL .

 

[GeneralDzur]

thanks that's what I needed to know. I'd almost forgotten the implicit deny.