I strongly doubt CFP is blocking the printer. It’s not crystal clear in your post as to whether or not the printer is connected to either computer or if it’s just wireless on the LAN - which computer has Comodo in it - or are you talking about one PC with a dual -boot?
This does smack of a problem with the Vista, though.
I don’t have access to a vista machine, so I’m kind of guessing at things.
The first question is, is the XP attached printer set up to be shared from the XP machine?
The second is, is the printer defined on the vista machine as being a network accessible printer, being accessed by way of the XP machine?
The third is, are the printer drivers installed properly on the vista machine? This usually has the “print test page” function.
Microsoft print sharing uses the typical SMB network ports for name resolution, but uses a different port (I think 9100/tcp) to actually send stuff to the printer. If there’s nothing showing in the log, then it’s either not (yet) a problem, or it isn’t being logged.
I have the same problem.
I had zonealarm installed on the xp pc that has the shared printer connected.
I had zonealarm installed on the vista pc that uses the shared printer to print from (vista - xp printer).
I had to turn off the zonealarm firewall for internet and intranet zones.
As you can imagine this created lots of problems, so I uninstalled zonealarm and now have comodo
on both pc’s, but I can print over the wireless, I am sure it has to do with trusting the printer port or driver or spool ?
I had three printers on my network that worked fine from Vista, with a Comodo firewall. After SP1 installed all three stopped working. I had to uninstall all three printers and was able to reinstall two of the three so they would work. I had other problems after SP1, but none were conected to the Comodo firewall. I checked the Microsoft Vista forums and found that other people are having all kinds of problems since SP1 came out. I would have to assume that automatic updates installed SP1 on your machine also and that is where your problem came from. One of my printers was older and a “Vista Driver” was not available, however it worked for 8 months without one, before SP1. The solution that finally solved my probles was to remove Vista and reinstall XP, and that worked really well. Microsoft dose provide free support for problems with a service pack.