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Block an IP for a subnet by iptables

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Operating Systems Linux Red Hat Block an IP for a subnet by iptables
# 1  
Old 04-25-2014
RedHat Block an IP for a subnet by iptables
Hi
I am looking to block an incomming IP for all the subnet in lab area. Only single Ip from Lab should be access to this incomming IP.



Block IP=10.20.50.xx
Subnet=10.30.40.xx
............................
...........................
Subnet=10.40.50.xx

can anyone explain how to do this by linux Iptables?

Thanks in Advance
# 2  
Old 04-25-2014
Although I've not used this yet, but will be doing so shortly, I would think that the logic should be to deny everything as default then just allow what you want to come in.



Robin
# 3  
Old 05-21-2014
Code:
iptables -A INPUT -s 10.20.50.0/24 -j DROP

Last edited by Franklin52; 05-22-2014 at 03:57 AM.. Reason: Please use code tags, thanks
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