Yes, enable this feature at see what will happen. This check sometimes drop valid dns request.
________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ray P Sent: Thursday, July 10, 2008 4:35 AM To: imipak; Full Disclosure Subject: Re: [Full-disclosure] DNS and Checkpoint The article you're looking at is for their SmartDefense product, an add-in to Firewall-1. Supposedly it will protect a DNS server behind the firewall from this vulnerability. Ray > Date: Wed, 9 Jul 2008 15:00:39 +0100 > From: [EMAIL PROTECTED] > To: [email protected] > Subject: [Full-disclosure] DNS and Checkpoint > > Hello everyone, > > I've had a report from someone with clue (and tcpdump) that a properly > functioning DNS resolver that correctly uses randomised source ports > magically becomes vulnerable once the traffic's passed through a > Checkpoint firewall, where Dan Kaminsky's tool shows: > > x.y.z.155:56978 TXID=712 > x.y.z.155:56979 TXID=45713 > x.y.z.155:56980 TXID=63532 > x.y.z.155:56981 TXID=7243 > x.y.z.155:56982 TXID=17620 > > (note the incrementing port numbers.) > > Can anyone else confirm this behaviour? > > Checkpoint are one of the dozens of vendors listed on the CERT > advisory as "Status: Unknown" > http://www.kb.cert.org/vuls/id/MIMG-7ECL6B > > They do have an advisory up: > http://www.checkpoint.com/defense/advisories/public/2008/cpai-01-Jul.htm l > > I don't have the login needed to read the whole thing, but the front > page just says: > > "Protection provided by: > VPN-1: * NGX R65 > * NGX R62 > * NGX R61 > * NGX R60 > [...etc, etc...] " > > > cheers > > =i > > _______________________________________________ > Full-Disclosure - We believe in it. > Charter: http://lists.grok.org.uk/full-disclosure-charter.html > Hosted and sponsored by Secunia - http://secunia.com/ ________________________________ Need to know now? Get instant answers with Windows Live Messenger. IM on your terms. <http://www.windowslive.com/messenger/connect_your_way.html?ocid=TXT_TAG LM_WL_messenger_072008>
_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
