Sonical SSL VPN will not connect.

We have a user who is getting this error when connecting over a VPN using a Sonicwall SSL Netexender: "The SSL-VPN server is not reachable. The server may be down or your internet settings may be down."

They have been using the VPN and just yesterday this started happening.  Nothing was changed on the TZ201W Sonicwall firewall.  I tried to login with my login and I get the same error.

I cant seem to pinpoint what is causing this user not able to login.  Is this something on the sonicwall itself?

maximus7569Asked:
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Aaron TomoskySD-WAN SimplifiedCommented:
Has the office Internet gone down? Are any servers up that you can verify the router and connection are working?
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maximus7569Author Commented:
No.  I can get to the Sonicwall remotely. I can get in and I can ping internally from Sonicwall to network.
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Aaron TomoskySD-WAN SimplifiedCommented:
Local users or ldap (or some other remote directory)?
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maximus7569Author Commented:
local users. LDAP is not used.  
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Aaron TomoskySD-WAN SimplifiedCommented:
Run out of concurrent ssl VPN licenses?
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maximus7569Author Commented:
No I have 3 but only one user is trying to connect right now. I think it might have to do with an ATT wireless card.  I am in the process of checking now. That is the change that was made.
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Aaron TomoskySD-WAN SimplifiedCommented:
If thats the change, then that's probably the problem.
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amatson78Sr. Security EngineerCommented:
Wireless cards from cellular companies have a lot of issues with VPNs for some reason. Try and connect from a hard connection. If it succeeds I would contact the vendor or carrier and see if they restrict SSL traffic that does not conform to RFC or if thetly are doing some kind of filtering.
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maximus7569Author Commented:
Wireless card was the problem.  We took it out and had him connect via hard connection at his hours and he was able to connect with now problem.  This user was out on vacation and used wireless ATT card to connect for internet access.
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Aaron TomoskySD-WAN SimplifiedCommented:
I've seen the AT&T communication manager and it has some VPN passthrough options last I looked.  Worth checking out.
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amatson78Sr. Security EngineerCommented:
Glad to hear you Narrowed it down. I'm my years working for SonicWALL TAC I have seen this a lot with AT&T and Verizon cards.
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