Cannot ping certain machines when using wireless connection
Hello, I have what seems to be a weird problem. Hopefully it is just a result of my networking and linux ignorance. I tried searching through the forums and googling for a while but I couldn't find a solution. If I missed it, please just reply with a link.
I have a laptop that usually uses a wireless USB Linksys network adapter, a wired desktop, and a wired mac mini. The laptop and desktop are running Fedora 8 and the mini is running Leopard. All are connected to the same router. Everyone can ping the router and get online.
The problem is when the laptop is using the wireless connection, it can't ping the desktop (and vice versa). At first I thought it was a firewall issue, but they can ping each other fine when the laptop uses the wired connection. So it seems as if the firewall rules are set up to allow pings properly.
Based on some readings I thought my router might be causing the issue, by not allowing communication between the wireless connections to the wired connection. However, while I was testing things I tried pinging the laptop from the mac mini. I was surprised to find it worked fine, and the laptop could also ping the mac.
So now I know that my router is not prohibiting anything, and the firewall doesn't care if my laptop is using the wireless or wired connection. What am I missing here? Why can't my wireless laptop and the wired desktop see each other?
PS My schedule is such that I will be going to sleep in about 3 hours, so please do not be put off by a lack of response by me during that time. I will be checking back as soon as possible.