Blocking Brutt Force Hecking Trial



Hello guys! Now we meet again to improve our knowledge of network security. I would like to introduce you security method for block brutt force hecking trial. Before I configure the router, I would like to give you know Brutt Force hecking method.

Brutt force is hecking method that try to input every combination username or/and password one by one until it can open the security. For example, if we secure our router with password cisco, than there is someone/hecker try to attack our router with brutt force. He will try to enter any passowrd one by one form a, b, c, ab, de, 12f, etc until it find right combination ‘cisco’. How many time is, how long is, he will try to input every single possible password could be. Don’t think the Hecker tries to input it manually, of course not, he will make program and run the program to do so.

To protect our network from this kind of attack, we can limit amount of login trial for everyone. For example, we limit for three attempts and block any attempt until three minutes later. Let’s try to protect our network

router#configure terminal
router(config)#login block-of 180 attempts 5 within 60

It means, block any login attempt for three minutes after 5 failure attempts within 60 seconds.

That’s all, try it yourself and hope it will add your knowledge.


Thanks to source:
danscourses

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