T1 to Firewall with VPN. Help me understand better.
Posted on 2004-09-20
Ok I'm a little bit confused.
T1 is 1.54Mbps a sec. (Captial Mbps is what? MegaBits per sec?) So technically if I purchase a Firewall with 1.54Mbps max throughput it should handle a T1 connection fine. No?
So what I'm trying to figure out, is when do I need to go to a bigger firewall.
Client of mine has a firewall with max 150MBps, well if a T1 is 1.54, then 150 seems a lot. Why would they need to go up to say, 200, or 275MBps. Or why even 1.54Gbps, which I've seen on some high end ones.
Is there a way I can determine easliy?
Then there is the matter of VPN.
This client example has one main location with a T1, that firewall is only 150Mbps Max Througput and 40MBps for VPN. So I'm thinking, ok 150 Max for the T1, that's good, and all 8 locations can get 40Mpbs max. Of course now I'm think that adds up to 320Mbps, but they dont need all 40Mbps, if a T1 again is 1.54Mbps. So if all 8 locations are using the firewall evenly plus the main office tha's 17.11kbps each?
I'm just a bit confused.
So how do I properly determine what throughput a client needs if they are on a T1?
What would you recommend for 8 locations and a main office to be on VPN. All internet, email, domain login goes through main office out T1.
Even now the VPN site takes like 8min to logon to the domain, it's awful.