trackerd

It seems that trackerd is part of the nfs problems we have been having.
There was a rogue that I found running today and it was sending about 3Gb/hour and receiving about 800MB/hour with the server. Luckily most everyone has turned them off now, but it is a "feature" that I wish gnome hadn't included.

Testing environment

-Create a guest account
-Configure iptables

Guest account is already enabled: "/etc/group" shows if guest account exists.
username: std
password: std

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Game removal -- Games are in "/usr/games/"

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iptables configuration:

# host -- Gives addresses

Testing rules can be done in terminal:

Ex. # iptables -A(add) -s(source) -p(protocol) -j

Put script in "/etc/init.d/"
After script creation: # update-rc.d multiuser

Script will run at startup from now on

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To do list: Create a script that allows an instructor to lock a lab computer by denying the specific localhost to communicate with itself...Maybe implement web-based interface? Webpage would show computers in lab and when instructor clicks on specified host SSH connects them to computer creates a temporary rule that drops local packets.

nfs

Changed the number of nfs threads from the default of 8 to 40 in an attempt to resolve the problem that users are having logging into gnome.