Access list

From: Joseph D. Phillips (jphillips@ufcwdrugtrust.org)
Date: Wed Mar 31 2004 - 20:51:47 GMT-3


I've spent the entire afternoon on a single access list and still can't figure out the logic. I've looked up articles, and converted everything to binary and still can't make sense of this.

Given the following networks (last two octets relevant), I need to block them all in as few lines as possible. Some of you people can do this in your heads. Simpletons like me, however, can't.

These are the networks:

1.2
1.10
1.18
1.26
3.2
3.10
3.18
3.26

In binary it looks like:

1 2 00000001 00000010
1 10 00000001 00001010
1 18 00000001 00010010
1 26 00000001 00011010
3 2 00000011 00000010
3 10 00000011 00001010
3 18 00000011 00010010
3 26 00000011 00011010

What do I do after that? I know how to summarize them all into one statement, but I need specific deny statements that only apply to the networks to be blocked and to none else.



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