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Firewall recommendations with clientless SSL VPN.

I am looking for some feedback on Sonicwall firewalls and firewalls in general that have SSL VPN services in one device.
Any pros and cons or experience on Sonicwall or other manufactures would be great. Application is for a smaller SMB.
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I have used Cisco ASA's using SSL VPN's and they've got a nice GUI (ASDM) you can use. They're reliable (Cisco) and there's lotsa bells and whistles and good documentation!
I second the recomendation for the Cisco ASA model.
How many simultaneous SSL VPN sessions are you going to want to support?
The ASA5505 base model supports 2 SSL connections but you can buy additional licenses. It can handle up to 10 simultaneous I believe.

With a clientless SSL you basically just have web browsing and windows file sharing capability.
There is also thin client SSL which consists of a java app which runs in the browser and allows most other things to work.
If you want full VPN functionality then you need to go for the SVC mode where you automatically download a java application from the ASA and this runs and provides a full VPN.
Here is a configuration example from ciscos website which also gives you a good idea what the ADSM web config interface is like to use.

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