Chris Olson wrote:
Small private networks are a necessary part of our business. We also run some small networks with Internet connectivity through firewall routers. The smallest of these networks has only a printer and a mix of five CentOS and Windows 7 machines.
We use a commercial protection product on the W7 system.
First suggestion: it's a commercial product. Why not open a support ticket with them? <snip>
A recent update to this protection product has caused it to start probing the network for other systems. There is sometimes a message following scans indicating that there are other systems on our network that are unprotected. It appears that the two systems it is naming are a CentOS 6 system and the HP printer.
<snip> Second: I'd log into the printer, and check a number of things: first, does it have bonjour enabled? Does it have "network printing" enabled? And are its cert, the CA, and the *other* cert all valid? The last, which sometimes you can only find under networking, not under security, there may be an option to regenerate a new self-signed cert.
Why it doesn't like C6, which I am assuming is fully updated, is a question for their support, if the o/p from the package doesn't tell you.
mark