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Disadvantages of IP sec Tunnelling mode
IP sec tunnelling mode has the following disadvantage
a.Encryption of small packets generates a lot networks over head thus reducing network performance.
b.IP sec is complicate and complex with many features. This complexity increased the probability of loopholes being discovered by hackers.
c.The data encryption standard algorithm is very susceptible to brute force attacks using readily available software on the internet.
The relationship between dotted decimal notation and classes is shown as follows. In class A the three octets managed to a host suffix. In class B the last most two octets ar
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