Well, it's been trying to crawl us; after about the first week I decided
to add a rule on the WAF to block it:

SecRule REQUEST_HEADERS:User-Agent "librabot" \
   "log,deny,auditlog,phase:2,status:404,t:lowercase,\
t:replaceNulls,t:compressWhitespace,tag:'AUTOMATION/MALICIOUS',\
severity:2,msg:'librabot User Agent String Detected'"

Can't say that I've actually seen anything outright malicious, but it
sure looks like a duck...

-- 
Shane Castle
Data Security Mgr, Boulder County IT
CISSP GSEC GCIH


-----Original Message-----
From: MARTIN, JASON (ATTSI) [mailto:[email protected]] 
Sent: Monday, January 03, 2011 15:54
To: Castle, Shane; [email protected]
Subject: RE: [Owasp-modsecurity-core-rule-set] librabot: block or
permit?

Did librabot hit your site, and did it do anything unusual or abusive?

-Jason Martin

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On
Behalf Of Castle, Shane
Sent: Monday, January 03, 2011 12:35 PM
To: [email protected]
Subject: [Owasp-modsecurity-core-rule-set] librabot: block or permit?

I've been blocking librabot if it appears in the user-agent. Info online
is sketchy about whether or not librabot is bad; one person claimed that
it did not honor robots.txt, and another at Microsoft said that it
wasn't anything of theirs, in spite of the Microsoft reference (see
request snippet below). The connecting addresses often don't resolve at
all (i.e., no PTR records in DNS).

So is there any consensus on whether or not it should be blocked? My
conclusion so far is that I should continue to block it.

Part of request:
   From: [email protected]
   User-Agent: librabot/2.0 (+http://academic.research.microsoft.com/)

-- 
Shane Castle
Data Security Mgr, Boulder County IT
CISSP GSEC GCIH


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