... denylog:IN=ppp0 OUT= MAC= SRC=68.167.80.174 ...
as you see in the logfile :"denylog".
the access to your server is denied.
this is a "normal" problem, because we all get scanned for open ports or something else.
if you want to get rid of these log-entries, try a search for "firewall" in the forum.
there is a command to set the loggin-options of the firewall.
cheers klaus