I am having the same problem with both Frostwire and Limewire, but since Frostwire is the one I am trying to use now I am posting here. It's been ongoing for a few months now. Whenever I launch either app I get "Starting connection" and "Frostwire has detected a firewall", and that's it. I have it set to use UPnP, and I can see in the router settings that the port forwarding is in fact getting set. I tried changing the default port but it doesn't help. I am running Ubuntu 11.10, and both programs did at one time, as in earlier this year even, connect to the network. I am using Frostwire 4.21.8 with java 1.7.0_21.

I am wondering now if Verizon blocked the gnutella network, or if there would be any way to check and see. Any help would be appreciated, thanks.

Just tested by booting in to Fedora with the same results, and then again with Frostwire 4.18.6 back in Ubuntu again, no luck with either.

Hi Sorien,

I'm not a Linux user, so sorry if this isn't helpful but have a look through this post & see whether the info helps: LW Linux regular & beta installers

Apart from installers, that post has a link to a fresh connection file for LimeWire 4 versions & AFAIK the fix should also be good for FrostWire 4 versions (since FW 4 is based on LW 4 code). You'll find links to the connect file at the bottom of the post.

Don't bother with the MediaFire or FileCloud mirrors - the file is no longer available there.

Try the connect fix & see whether that solves your problem.

If you're still stuck, please post back & maybe include your system details in case there's anything else in your setup that could be the problem.

As Birdy suggested, try a fresh connection file. This is a likely issue. I have not created connection installers for linux because I thought the concept was easy enough to manually replace the file and was not sure how much demand for a linux connection installer would be. ie: download a fresh gnutella.net file, go to your Home folder, either ~.limewire or ~.frostwire folder and replace the gnutella file inside.
Keep in mind if using LW 5 and the gnutella file's modification date is older than 28 days then LW will delete the file as it opens. But I produced a linux LimeStart for LW5 to solve this issue. I have Ubuntu 12.0.4 and LW 4 and LW 5 connect fine.

Also keep in mind that for LW at least, you may see a no connection message on the main window. This is because the main window connected to the original LW site which no longer exists. All that matters are the connection bars bottom-left-corner of the LW screen. sample image.

One of the tricks I used to use for LW4 was to disable one of the advanced settings such as either DHT and TLS, I can't remember which one seemed to work for me. Otherwise it seemed to have connection/firewall warning issues.

If still no connection you could try installing Phex to see if it connects. There is a Phex connection installer for Linux. (I created a connection installer for Phex because it does multiple things.)

Edit: Fixed the Filecloud, MediaFire and Rapidshare broken links.

Was working on a long involved details filled post, testing as I went, and one of the things I tested was a version of Limewire from here:

LimeWire - Linux versions - filecloud.io

And as it turns out, that worked.

Thanks guys.

Great to hear. Which version may I ask?

LimeWireOther_4.18.8p