Educause Security Discussion mailing list archives
Re: Cisco ASA Firewall Inspect Commands
From: "Di Fabio, Andrea" <adifabio () NSU EDU>
Date: Wed, 22 Jul 2009 09:53:23 -0400
We removed the esmtp after realizing it was dropping legitimate emails left and right even after some fine tuning of the inspect properties. We use the dns unmodified without any issues. -----Original Message----- From: The EDUCAUSE Security Constituent Group Listserv [mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Dennis Bohn Sent: Wednesday, July 22, 2009 9:20 AM To: SECURITY () LISTSERV EDUCAUSE EDU Subject: [SECURITY] Cisco ASA Firewall Inspect Commands Hello, We are upgrading our firewalls from PIX to ASA (8.2 code). Has anyone left the default 'inspect' commands in place? We are particularly concerned around 'inspect esmtp' and 'inspect dns.' The old fixup smtp did not work for us, we are wondering how the inspect esmtp command works (or not). Did anyone try it and lose email? Though the HTTP inspect is not default, I am wondering if anyone has found it useful. Are the regular expressions being used to block certain URLs? Also welcome hearing about any issues with the ASA 8.x code train. TIA, dennis Dennis Bohn network manager 5168773327
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Current thread:
- Cisco ASA Firewall Inspect Commands Dennis Bohn (Jul 22)
- <Possible follow-ups>
- Re: Cisco ASA Firewall Inspect Commands Di Fabio, Andrea (Jul 22)
- Re: Cisco ASA Firewall Inspect Commands Consolvo, Corbett D (Jul 22)
- Re: Cisco ASA Firewall Inspect Commands John Sanders (Jul 22)
- Re: Cisco ASA Firewall Inspect Commands Kevin Halgren (Jul 22)