IPtables Installation And Configuration-failed

#21

I think, if I click on someone review ( when I have not found anyone comments as for the solution) . I know after accepting anyone reviews task will be available to work again,

Bit I think I will not have complete marks. :slight_smile:

if you can mark it pending? @player001

#22

@bilalshakir41396 when you do a task again, you will receive all points if you do it successfully.

#23

@Nasri

I received 50 percents marks only on success. :slight_smile:

#24

@Devops
Would you please explain why we should not use -A flag and what is wrong with that?

I really got stack in this task, I have run the following commands but did not work.
iptables -A INPUT -p tcp --dport=6400 -s 172.16.238.14 -j ACCEPT
iptables -A INPUT -p tcp --dport 6400 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT

Am I right ? the reason is -A append the rule to the end of iptables file whereas -I insert into the first line

#25

@Nasri

By Default, when you install iptables or firewalled, only ssh service is allowed as you notice in this task. Also, iptables applying rules as “first match”. So, if you use -A flag, iptables insert this rule at the end of current default rules and the task will fail. You can insert/delete iptables rules at specific location by using line numbers. For example, if current default rules are 7, then you can insert/delete rule at line 4.

1 Like
#26

For tutorial/solution - https://youtu.be/oW2UTb-Nfx0 - This video is made by me with sole intention of helping the community

#27

For Tutorial/Solution - Content made for sole reason to help the community.