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New Member

IPSec configured in PIX firewall without VAC

Hi Sir,

Can someone guide me to find documents stating:

a) How many encrypted tunnels for concurrent sessions can run? and

b) At what PIX utilization level?

Can a PIX firewall handle without VPN accelerator card.

Meaning that just enable IPSec at pix image level without VPN accelerator card.

Thank you,


  • Other Security Subjects
Cisco Employee

Re: IPSec configured in PIX firewall without VAC

The PIX can quite capably handle IPSec tnnels without a VAC, but if you're going to have a lot of tunnels or push a ton of data thru them, then you're better off with a VAC. There's no definate numbers cause it depends on how busy your PIX is, how many sessions are going thru it, etc, etc.

The data sheets are probably your best reference point though (there's one for the VAC specifically here too):

New Member

Re: IPSec configured in PIX firewall without VAC

Hi Glenn Fullager,

Thanks for your information but do you have the exact number as per my questions ???

Gotto to show them to my customer and they are serious to buy.


Raymond Hew.