cisco router and home sharing

njain

macrumors member
Original poster
Aug 12, 2011
33
0
I recently switch to a cisco 800 series router for my house. Ever since I did that, I have been unable to use home sharing between my mbp running lion and a computer on windows 7. I know it has something to do with the router because on a network at my school I can use the remote app through home sharing perfectly fine. Any suggestions?
 

charlien

macrumors 6502
Jul 3, 2006
260
46
It probably isn't an issue with the router but the fact you changed routers. Most home routers are the DHCP and DNS servers. I suspect that when installed the new router your IP addresses changed.
 
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JediMeister

macrumors 68040
Oct 9, 2008
3,263
3
The issue is with the firewall on the Cisco router. More than likely is blocking port 5353, which according to this article, is used by Home Sharing. You need to open the port to allow communication between all your devices. The network admin at your school may have opened that port for some other service, which is why it works there.
 
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njain

macrumors member
Original poster
Aug 12, 2011
33
0
ok, and how do I go about opening up this port?
 
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throAU

macrumors 603
Feb 13, 2012
5,788
2,975
Perth, Western Australia
The issue is with the firewall on the Cisco router. More than likely is blocking port 5353, which according to this article, is used by Home Sharing. You need to open the port to allow communication between all your devices. The network admin at your school may have opened that port for some other service, which is why it works there.
The router by default will not be blocking hosts on the same LAN from talking to each other. if you're on the same LAN/subnet, the packets won't even be hitting your router (or at least, not it's routing engine) - they'll be getting dumped "on the wire" directly and the switching module, wireless AP, etc will relay them directly to the other NIC.

My money is on the changed IP address.
 
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njain

macrumors member
Original poster
Aug 12, 2011
33
0
what does the changed ip address mean? all the computers are on the same network
 
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mrlhxc

macrumors member
Aug 25, 2010
31
0
I put money on ports

I don't see how changing an IP address would be an issue. If they are on the same network ( same subnet ) they should be fine. The Home Sharing protocol should be smart enough to scan or w/e for the computers or devices anyway. I had an issue with my Windows 7 box not talking to my iPhone for the "wireless sync" and it was related to the ports issue.

As JediMeister said it could be related to ports 5353 being blocked on your router. Look up how to configure your router. It probably has a management interface accessed by the web. You also might be able to connect to it using SSH. You'll have to find the documentation that came with the router or look on cisco's website for more information to specifically connect and change settings with your router.

The Cisco 800 Series Router may be overkill for your house though unless you have 20-50 computers and need VPN functionality. What router did you used to have?

I have a new Apple Extreme Base Station and love it.
 
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