On Mon, Oct 22, 2012 at 04:38:35PM +0200, matjaž wrote: > Is it possible that owner matching does not work correctly ? > I tried blocking internet access to one user, but found out he can > still use ping. ping(1) must be SUID to have the privilege to make ICMP echo request packets. Therefore outgoing pings are done as root. Your solution would be to change permissions of your ping binary such that the user in question cannot execute it. snip > Also : the -match --uid-owner seems to work on other protocols. Indeed. > Oddly enough, using group id instead seems to work : snip > Is this expected behaviour ? Yes. -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
