Firewall Wizards mailing list archives

Re: BigIP controller - any issues?


From: Joseph S D Yao <jsdy () cospo osis gov>
Date: Fri, 1 Oct 1999 13:11:39 -0400 (EDT)

...
IP forwarding on BigIP has to be specifically enabled. Out of the box
it is setup as default DENY. In other words, only those IPs and services
setup with VIPs will get traffic. Also ICMPs are not passed, except for
Fragment/Dont Fragment. ...

Ah.  This might explain why a dual firewall with a BigIP in front of it
might be able to talk to some hosts, but fail with large mail messages
to certain MSW-NT servers.  No packet size negotiation?  This is
important when going through a tunnel, since the tunnel envelope would
take up some of what would otherwise be the usual packet size.

Sound about right?

--
Joe Yao                         jsdy () cospo osis gov - Joseph S. D. Yao
COSPO/OSIS Computer Support                                     EMT-B
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