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CISCO ASA 5505 IPSEC link 2 devices to enable 50 simultaneous users

Posted on 2013-01-01
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Last Modified: 2013-01-03
Can I interlink a second ASA 5505 licensed for 25 IPSEC users to my existing ASA 5505 IPSEC with 25 concurrent users for a total of 50 concurrent users capacity ?

Who to contact to provide remote configuration service of the second device ?
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Question by:am5240
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by:rauenpc
rauenpc earned 300 total points
ID: 38735419
You could potentially allow IPSec to pass through to the second ASA, and have the VPN client configured with a failover peer ip. This would require that you have 2 public IPs available.

However, there is no license linking to allow a single 5505 to have 50 IPSec connections that I'm aware of. That limit is more of a hardware thing, not just licensing.
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by:lruiz52
lruiz52 earned 300 total points
ID: 38735506
Cisco ASA 5505 has a max limit of 25 concurrent sessions if you need more concurrent connections you need to upgrade to the ASA 5510 which has a concurrent connection limit of 250
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by:Sandy
Sandy earned 300 total points
ID: 38735757
No, You need to upgrade the license.
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Ernie Beek earned 300 total points
ID: 38735904
No (easy) way that I can think of. As said before, better upgrade the license or the device. Even if you have both devices up and running (with their own public IP), the simple fact of the default gateway for the network already gives you issues: you can only have one. So you can use the device that isn't the DG to connect to through VPN but you won't be able to get anywhere.

However......

Perhaps if the second ASA uses a separate IP range to hand out to the VPN client (which it should) you can add an additional route on your network to that range through the IP of the second ASA. That way you can use all 50 sessions, only not combined. So some users would have to connect to the first ASA's public IP and other users to the second ASA's public IP.

Depending on what your needs are exactly that might be worth giving a try.
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by:ArneLovius
ArneLovius earned 300 total points
ID: 38736525
as per lruiz52

if you had a load balancer and were only using the SSL VPN client, you could theoretically distribute inbound traffic across both ASAs...
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