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Blocking ports in linux
This is a discussion on Blocking ports in linux within the Linux software forums, part of the Linux Getting Started category; How do i block ports in linux as i do not want to give access to everyone... How do i ...
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07-09-2006, 04:35 AM
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Blocking ports in linux
How do i block ports in linux as i do not want to give access to everyone...
How do i block a single port ? How do i block a single port for specfic IP? thanks in advnace 
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07-10-2006, 07:31 PM
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The easiest way to block particular TCP port in Linux is use iptables rule as follows:
Code:
iptables -A INPUT -p tcp --destination-port PORT-NUBMER -j DROP Code:
iptables -A INPUT -p tcp --destination-port 22 -j DROP Code:
iptables -A INPUT -p tcp --destination-port 22 -s \! 202.65.11.10 -j DROP Code:
iptables -A INPUT -p udp --destination-port PORT-NUBMER -j DROP
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Vivek Gite Linux Evangelist  Be proud RHEL user, and let the world know about your enterprise choices! Join RedHat user group. Always use CODE tags for posting system output and commands! Do you run a Linux? Let's face it, you need help
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