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SonicWall blocking isakamp?

Ulf_Baumann
Lots of users can connect to our Astaro VPN gateway ("gateway") from workstations that are located behind firewalls that perform PAT. There is one user who can successfully connect from her laptop when at home where she has a consumer grade firewall. When she is at work, where she is behind a SonicWall firewall, she cannot connect to our gateway.
I looked at the traffic using tcpdump on the gateway, and found that there is absolutely no traffic arriving at the gateway when she tries to establish a VPN from behind the SonicWall firewall.
Is this a known problem with the SonicWall? Could it be that SonicWall filters out isakamp packets?


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    It doesn't sound like you are the administrator of the Sonicwall.  Do you know what type of security policy they have installed on it?

    I've never heard of Sonicwall blocking ISAKMP regardless of the security policy that is installed, so I would guess that they have a rule configured that is blocking your traffic.
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