Huh??  Where exactly are you trying to block access to a slingbox?

 And the port slingplayer talks from will be a random port above 1024, normally between 1024–49151

 TCP    192.168.1.100:[b]1892[/b]     192.168.1.75:5001      ESTABLISHED
 TCP    192.168.1.100:[b]1899[/b]     192.168.1.75:5001      ESTABLISHED 

 Your going to have a VERY hard time blocking source port traffic.. Since this is normally always a random port.. Unless your talking ftp or dns, etc..

Also -- you can set the slingbox can be set to listen on a different port other than 5001 as well.

If you would give some details of EXACTLY what your trying to prevent, and where your trying to prevent it at?  Your router, firewall running on some machine?

Where is this slingbox your trying to prevent access to?  On your network or on the public net somewhere?? 

Not sure why you want to do that. But if you are trying to limit folks getting on your Slingbox, how about a change of password?

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I am still at a loss of where this person is coming from -- what do you mean allow him to use it, but not from a specific router??

Please layout this network where your slingbox is located.. And where exactly this person your trying to come from would be coming from?

Sorry -- but you can not control what port the slingplayer will be coming from.. Thats kind of what "random" port above 1024 means ;)

Most every network application works this way..

Is this person on the private side of your network - or from the public net? I am assuming your sling is connected to your home network, behind a NAT router.. Is this not the case?  Where is this user that your trying to block from a specific router located?

Complicated, no not really.. I think your very confused about what source port is, an where to block this is all.

Your sling is listening on 5001 by default.. So on your wgr614 block outbound access to port 5001 whenever you do not want your kids to use the slingbox.

Page 4.2 of the manual  for your router

ftp://downloads.netgear.com/files/wgr614v4_ref_manual.zip

Talks about blocking access to internet services, create a service for your sling, ie tcp port 5001 and block this whenever you want.. either all the IPs on your home network, or just the ips of your kids machines.

Not complicated at all - very easy to do! 

You shoudl be able to schedule the 834 to stop forwarding 5001 during a certain time,  and make sure you  turn off UPNP, else the slingbox might enable the port itself.

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You should be able to block the Slingbox's IP from being accessed during certain hours. Or prevent certain IPs on the LAN from using certain ports. For example, you could filter port 5001 to a specific IP during a specific time. This shouldn't be too hard and most routers allow it to some extent. You may even better want to block it at the MAC address level. The best way is to block the client (ie: your kid's computer) from accessing the Slingbox. And if you block it at the MAC level, then if your kid attempts to change his IP, it still won't work...

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