Concentrator 3005 ports for router

Hello to ALL,
Something got screwed up here. I need to know which ports should be open on a router that is in front of the concentrator ? ? ?
UDP 4500
TCP 10000
Are these right ?
Please help, thank you

Hi,
IPSec uses the ESP IP protocol (not port) and UDP port 500 (isakmp) and might use the AH IP protocol.
If you use Nat-T then you need UDP port 500 (isakmp) and UDP port 4500 (originally UDP port 10000). With Nat-T there is no need for the ESP and AH protocols.
Regards, Frank

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server ac-ntp0.net.cmu.edu iburst
server ac-ntp1.net.cmu.edu iburst
server ac-ntp2.net.cmu.edu iburst
server ac-ntp3.net.cmu.edu iburst
server ac-ntp4.net.cmu.edu iburst
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Hi,
I work in a small office and we are trying to connect people remotely to our server through VPN.
Using the Server App I managed to make VPN work and successfully connected to our file share points, so that means file sharing worked without opening ports for afp on my Airport router.
On the other side I cant connect to other services as iCal and Address Book as I am locally in the office. Does that mean I have to open the ports for those services on the router, if yes then why use VPN in the first place.
Thanks,

If I understood you correctly:
External client -> (server.domain.name) -> Router -> Server: is working
Internal client -> (server.domain.name) -> Router -> Server: is not working
Internal client -> (local ip) -> Server: is working
If yes, you can implement a-la "split zone DNS".
1. On the external DNS your domain name server.domain.name resolved to the external router IP.
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Concentrator 3005 ports for router

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