Changes between Version 10 and Version 11 of Csle2022/Agenda/FW

Timestamp:

Oct 20, 2022, 11:33:12 AM (3 years ago)

Author:

geethike

Comment:

--

Csle2022/Agenda/FW

@@ -103 +103 @@
 sudo iptables -A INPUT -s 192.168.1.3 -j DROP
 }}}
+This may look complicated, but most of it will make sense when we go over the components:-
+
+'''-A INPUT :-'''
+
+The flag -A is used to append a rule to the end of a chain. This part of the command tells the iptable that we want to add a rule to the end of the INPUT chain.
+
+'''-I INPUT:-'''
+In this flag the rules are added to the top of the chain.
+
+'''-s 192.168.1.3:-'''
+The flag -s is used to specify the source of the packet. This tells the iptable to look for the packets coming from the source 192.168.1.3
+
+'''-j DROP'''
+This specifies what the iptable should do with the packet.
+
+In short, the above command adds a rule to the INPUT chain which says, if any packet arrives whose source address is 192.168.1.3 then drop that packet, that means do not allow the packet reach the computer.
+
+Once you execute the above command you can see the changes by using the command:-
+{{{
+sudo iptables -L
+}}}