Security Basics mailing list archives
RE: What addresses to put on my NEW black list?
From: "David Gillett" <gillettdavid () fhda edu>
Date: Thu, 23 Feb 2006 09:05:31 -0800
Unfortunately, more and more traffic is coming in on ports 80 and 443. [Don't you love that for many application developers, "security engineering" consists of making sure that it's hard for network security to enforce policy against the app?] I'm forced to conclude that even stateful packet filter firewalls will be useless within 3-5 years, if they're not already, and that the hope for network-based policy enforcement lies with SSL proxies that know about upper-level protocols and even object types. [Blue Coat's latest effort looks good to me -- I'd like to hear about other options that are out there or coming up.] David Gillett
-----Original Message----- From: Ryan Cummings [mailto:l00t3r () gmail com] Sent: Wednesday, February 22, 2006 4:10 PM To: phunked up! Cc: Security-Basics Subject: Re: What addresses to put on my NEW black list? You might be much better off blocking the ports that filesharing/streaming media come in on. You should be able to do a bit of searching around and find the default ports for most of these applications and shut them down at the firewall level. Also depending on your firewall or even IDS (this is debatable on the use:P) you could filter the content there. I know searching around on shoutcast.com most of the streaming stations use 8000+ for a port number so that is a good start. On 2/22/06, phunked up! <phunkodelic () gmail com> wrote:Trying to create a blacklist for my network. Want to include addresses for mainly streaming audio, and file shareing. I have a couple of network abusers who listen to internet radio thatjust don'tfollow company policy which has banned it. Yes I know I should try and bust them but thats a pain in the butt and besides if Ido that Idon't get the joy or experience of doing this. First off I was going to deny the addresses of various "bad" severs/web sites on the net at my firewall. I was then going to create a DNS entry that points all restriced IPs to a internal web server that would host a page stating that the site is banned (blackholing IPs). As mentioned above the issue I have is finding the IP addresses to ban. Any help would be appreciated. Thanks!--------------------------------------------------------------------------- EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE -ONLINE TheNorwich University program offers unparalleled Infosec management education and the case study affords you unmatchedconsulting experience.Tailor your education to your own professional goals with degree customizations including Emergency Management, Business Continuity Planning, Computer Emergency Response Teams, and DigitalInvestigations.http://www.msia.norwich.edu/secfocus----------------------------------------------------------------------------------------------------------------------------------------- ------------- EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE - ONLINE The Norwich University program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Tailor your education to your own professional goals with degree customizations including Emergency Management, Business Continuity Planning, Computer Emergency Response Teams, and Digital Investigations. http://www.msia.norwich.edu/secfocus -------------------------------------------------------------- -------------
--------------------------------------------------------------------------- EARN A MASTER OF SCIENCE IN INFORMATION ASSURANCE - ONLINE The Norwich University program offers unparalleled Infosec management education and the case study affords you unmatched consulting experience. Tailor your education to your own professional goals with degree customizations including Emergency Management, Business Continuity Planning, Computer Emergency Response Teams, and Digital Investigations. http://www.msia.norwich.edu/secfocus ---------------------------------------------------------------------------
Current thread:
- What addresses to put on my NEW black list? phunked up! (Feb 22)
- Re: What addresses to put on my NEW black list? Ryan Cummings (Feb 22)
- RE: What addresses to put on my NEW black list? David Gillett (Feb 23)
- Re: What addresses to put on my NEW black list? Brian Loe (Feb 23)
- Re: What addresses to put on my NEW black list? nodialtone (Feb 23)
- Re: What addresses to put on my NEW black list? Neil (Feb 23)
- <Possible follow-ups>
- re: What addresses to put on my NEW black list? Steve Barron (Feb 23)
- re: What addresses to put on my NEW black list? Jim Halfpenny (Feb 24)
- Re: What addresses to put on my NEW black list? Ryan Cummings (Feb 22)