Blocking address range on my router

Answered Question

Hi,

I would like to block following address range on my router ext int.

71.64.0.0 - 71.79.255.255.


Will the mask be 0.15.255.255.

Should I follow access-list 101 deny ip 71.64.0.0 0.15.255.255 any.And add access group 101 to int.


Correct if I am wrong mask..

for below range.

116.120.0.0 - 116.127.255.255


It should go like this 0.7.255.255?


Reg,

Sushil

Correct Answer by adamclarkuk_2 about 8 years 5 months ago

You are correct


71.64.0.0 - 71.79.255.255 = 0.15.255.255

116.120.0.0 - 116.127.255.255 = 0.7.255.255


Make sure you put this deny before any entries that may match any of the address's with a permit.

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Correct Answer
adamclarkuk_2 Sat, 02/28/2009 - 02:58
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You are correct


71.64.0.0 - 71.79.255.255 = 0.15.255.255

116.120.0.0 - 116.127.255.255 = 0.7.255.255


Make sure you put this deny before any entries that may match any of the address's with a permit.

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