[Shorewall-users] Best Way to Block Most Incoming Traffic

[Brent Gordon]

What is the best way to block most, but not all, incoming traffic?  
There are four blocks of addresses I want to allow through for remote 
administration.  Other than traffic from those four blocks I want to 
drop all other traffic.

I am running Shorewall version 5.0.4 on a Ubuntu 16.04.5 LTS system.



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