Cisco Secure and personal firewalls...

Jon Carnes jonc at HAHT.COM
Fri Aug 4 22:55:50 EDT 2000


Just a suggestion (as I don't run Cisco Secure VPN), try Zone Alarm as the
personal firewall. It has an adaptive algorithm that will allow any program
you run on a computer full access to the internet - once you tell Zone Alarm
that the program can be trusted.

Note, you do have to define the address of the VPN connection as trusted,
and also the remote network that you will be attaching to.  You can define
that by pressing the advanced button under the Security tab, in Zone Alarm.

I've found Zone Alarm to be wonderfully different from most personal
security products.  It's very easy for even the most technologically
challenged to setup.  Of course it is a bit annoying for a day or two while
it asks you questions...

Jon Carnes
MIS - HAHT Commerce
----- Original Message -----
From: "Jason Zann" <jason.zann at MARYVILLE.COM>
To: <VPN at SECURITYFOCUS.COM>
Sent: Friday, August 04, 2000 6:10 PM
Subject: Cisco Secure and personal firewalls...


> I have a situation where I have a Cisco Secure VPN client sitting on a
> machine behind a personal firewall. (i believe the personal firewall in
this
> situation to be mutually exclusive because i have tested a few and i am
> getting ready to test a few more... and all of them are getting the same
> results). When the client is outside of the personal firewall, there are
no
> negative issues to speak of; however, when brought to the internal
network,
> it will not connect to the server (through the firewall(s)).
>
> My question stems from the fact of why will it not work. I was under the
> impression that the Cisco Secure client piece worked at the application
> level and all it was doing was forming the tunnel back to the server so
that
> data could be passed. I can only assume that there is some kind of traffic
> that is sent back to the client that the firewall will not pass, and that
it
> turn cause the connection not to work; however, Cisco denies this.
>
> If there is someone or someplace that can give me an explanation of how
> Cisco Secure forms its VPN (from a logical perspective interacting with
> other devices, like firewalls), possible reasons it will not work behind
> personal firewalls, and what can be done to remedy the situation would be
> great.
>
> VPN is sponsored by SecurityFocus.COM

VPN is sponsored by SecurityFocus.COM




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