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This site has links, downloads, documents, and over 400 FAQs relating to FireWall-1/VPN-1, a software package written by Check Point Software Technologies, Ltd. See my copyright page for detailed copyright and disclaimer information.
Did you know I've written a book on FireWall-1? Find out the details here.
If you have a technical question you would like me to answer, please
post it to the FireWall-1 Wizards List, which
is being served on freelists.org. You may wish to also post your question
to Check Point's
FireWall-1 Mailing List, or the
Check Point newsgroups, but I do not monitor these forums. Suggestions, corrections, and contributions to this FAQ are welcome and can
be emailed to fw1@phoneboy.com
.
I will ignore any technical questions directly emailed to me!
WARNING: Do not attempt to use a site sucker, an offline web browser (such as MSIE 5's "Make Available Offline" feature), or any sort of tool that automatically follows links. Anyone using these tools will have their IP blocked..
FireWall-1 4.1 SP5 (and earlier SPs) on IPSO has a problem with SYNDefender in Active Gateway mode with NAT that causes packets with untranslated addresses to leak out. A hotfix for 4.1 SP5 is available on Check Point's Software Subscription page.
All versions of FireWall-1 (up to version 4.1 SP4) allow the service RDP (UDP Port 259) through the firewall by default. A hotfix is available from here. More information.
If you're not running FireWall-1 4.0 SP7 (Solaris,
NT, AIX, HPUX, Linux), FireWall-1 4.0 SP5 build 13 (IPSO), or FireWall-1
4.1 SP2 (all platforms) or later, you are vulnerable to a number
of security issues. These issues were revealed at the
Black Hat 2000 conference and are extremely serious in nature.
You can read all about the vulnerabilities
here .
A vulnerability
in FAST MODE was found to exist, which people could use to get around the
security policy. Note that this is not the default behavior, so you should
only be vulnerable if you've explicitly enabled this feature for a TCP service.
Either disable FAST MODE, upgrade to 4.1 SP3 (now available) or upgrade to
4.0 SP8 (available for all platforms except Nokia). Note that Check Point
will remove this feature in the next major release since recent performance
enhancements have reduced the effectiveness of this feature.