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I ran a port scan on my network's primary server and saw that port 7100 (X Font Service) was open. I am not familiar with "X windows" and am wondering if there exist a possible security threat. The scan was run on the inside of NAT and I am not sure yet if the port is visible from the outside. Could XFS be related to the web server admin tool? Any help/info would be greatly appreciated.
not sure of all the details but a search on google resulted in this
results
XFS is required to run XWindows, but it shouldn't be open to external interfaces. What kind of protscan did you do in order to determine the port was open?
There is nothing unusual that you found this port open. X opens ports for both its XFS (7100-7101) and for its X11 server(6000 -6009). The security risk is low but it still exists so you should configure a firewall on your box or don't run X of course ;)
Any way - take a look at the following links : They provide some good info on that topic:
1. http://www.tldp.org/HOWTO/Security-Q.../appendix.html
2.http://yolinux.com/TUTORIALS/LinuxTu...tSecurity.html
And you can find many many more on the NET.
P.S.It will be better for you if you post *nix related topics in the *nix forum :)
str34m3r: I'm using superscan. I don't have XWindows running anywhere on the network. Is there anything else that uses XFS?
Thanks for the links seeker_319, sw2v.