Blacklists: ASA5510 / botnet filter

Unanswered Question
Oct 23rd, 2009

I am testing IP blacklists through the botnet filter.

If I try to add:

62.5.128.0/17

to the blacklist - I get the error message 'The netmask is not valid'. Can anyone explain that? I mean, that is a valid netmask is it not?

**oops. Misposted in wrong forum. I will repost in security forum. Sorry.**

I have this problem too.
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congressgroup Fri, 10/23/2009 - 14:11

no.. it will not take that format. It specifically calls (Through ASDM that is) for

1) hostname

2) specific IP

3) net mask in 10.10.20.0/24 format.

I am starting to think it will only take masks on major octets, like /8 /16 and /24 and the corresponding octets must be zero.

it will take:

62.5.0.0/16

or:

62.5.128.0/24

but not:

62.5.128.0/17

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