[Emerging-Sigs] RBN-Blackhole evasion tactic

Jack Pepper pepperjack at afferentsecurity.com
Thu Feb 14 15:17:46 EST 2008


Quoting Jim McQuaid <jim.mcquaid at gmail.com>:

> Last weekend I found several new RBN domains and IP ranges.  They have
> adopted a new tactic, which is to use an "*" as the subdomain's name.
> When one tries to use an asterisk as a subdomain in Smoothwall's

Do we need to watch for embedded asterisks in the subdomains?  Like  
"abc*def.something.com" ?  Or will it always be an asterisk by itself?

Does the asterisk always have to be in the first field or do we need  
to watch for things like "www.*.something.com" ?

Do we care wether it's A records, or PTR replies, or MX records?




-- 

Framework?  I don't need no stinking framework!

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