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need to close ports to secure machine
After scanning a couple internet servers and seeing they use only 2 or 3 open ports, i scanned my machine and here is the output:
Port State Service 21/tcp open ftp 22/tcp open ssh 25/tcp open smtp 37/tcp open time 79/tcp open finger 111/tcp open sunrpc 113/tcp open auth 515/tcp open printer 587/tcp open submission 6000/tcp open X11 This looks like way too many open ports for me. How do i close them all off except the needed ones. I use eth0 for internet connection. I use pop3/smtp mail client. no ftp or web server, no shared printer. anything else you need to know before you can help close ports, just let me know. |
use a firewall....
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stop the deamons
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...and look at the security forums 1st thread on securing your boxen.
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if you dont know iptables use firestarter(look at freshmeat) to close ports and also if you dont use them close the services running.
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