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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, 05:35 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, 08:31 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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