https://www.posetteforever.com/viewtopic.php?f=34&t=400&p=3299#p3299
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Landman
Friday, 12 September 2003, 08:44 PM


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Tormentor, if you turn off your TFTP ports on your machine, you can lower your risk of getting infected accross a network. most viruses will use TFTP port 69 on your machine. if you can figure out a way to disable that port either by a firewall or editing the services file in WINDOWSsystem32driversetc directory. open the file in notepad. scroll down untill you see tftp and then tabbed accross the page will be the numbers 69/udp then beside that it will say #Trivial File Transfer, just change that so it reads 0/udp and save the file. thats how you manually close ports on your computer. the tftp ports are basically only used if you are uploading firmware image files to a prom on a router or hardware firewall or something to that extent. if you do need to upgrade firmware and need that port open. all you need to do it change that value from 0 to 69 again.

anyhow, thats just a tip to protect your machines from these types of things
take care