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Author 2k3 VPN problem
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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20th Jun 05 at 16:53   View User's Profile U2U Member Reply With Quote
A few of you might remember i had this problem a while back...

but now i have a new DSL modem/router Linksys AG241

set up with the network like this....


Server 2k3 - - - - switch - - - - modem/router


but now when i try to connect i get error 721.

the modem/router allows vpn passthrough on:
PPTP
IPsec
L2TP

i have set up port forwarding on these to the server IP address...
1723 tcp
1701 udp
4500 udp
500 udp
50 tcp
51 tcp

still no joy!

anyone know what else i can try?
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 12:26   View User's Profile U2U Member Reply With Quote
anyone?
Skinz
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Registered: 15th May 03
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21st Jun 05 at 12:33   View User's Profile U2U Member Reply With Quote
are you by any chance mixing cisco vpn clients with MS VPN Connections?
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 12:34   View User's Profile U2U Member Reply With Quote
nope im using all MS vpn connecting to a w2k3 server with routing and remote access setup to allow incoming vpn access.
Skinz
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Registered: 15th May 03
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21st Jun 05 at 12:36   View User's Profile U2U Member Reply With Quote
are you sure your isp isnt blocking port 1723
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 12:37   View User's Profile U2U Member Reply With Quote
its BT business Broadband. i dunno if they are or not.

can i just give them a ring to check?
Skinz
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Registered: 15th May 03
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21st Jun 05 at 12:41   View User's Profile U2U Member Reply With Quote
ye
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 12:41   View User's Profile U2U Member Reply With Quote
what happens if they are? can they change it so there not?
Skinz
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Registered: 15th May 03
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21st Jun 05 at 12:43   View User's Profile U2U Member Reply With Quote
who knows, knowing BT probaly not
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 12:43   View User's Profile U2U Member Reply With Quote
Have you or anyone else reading this ever had this problem or heard of it?
Skinz
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Registered: 15th May 03
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21st Jun 05 at 12:47   View User's Profile U2U Member Reply With Quote
noe but then here at work we have LAN extensions so have full control over our ports
willay
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Organiser: South East, National Events
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Registered: 10th Nov 02
Location: Roydon, Essex
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21st Jun 05 at 12:51   View Garage View User's Profile U2U Member Reply With Quote
couldnt see them filtering out VPN ports mate, they normally just filter stuff like netbios related ports cause of worms and stuff.
Antz
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Registered: 28th Jul 03
Location: Leeds         Drives: Myself Insane!
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21st Jun 05 at 14:48   View User's Profile U2U Member Reply With Quote
BT provide all our lines here at work... they block all ports on Business links exept the basic HTTP, FTP etc. Ring then and ask them, if they have them blocked you need to put in a major change request and have them do it at the exchange (takes forever with BT!)
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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21st Jun 05 at 17:32   View User's Profile U2U Member Reply With Quote
ill give them a ring first thing tomorrow. see what they say.
Houckham
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Registered: 29th May 03
Location: Newcastle upon Tyne
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27th Jun 05 at 14:49   View User's Profile U2U Member Reply With Quote
BT have not blocked PPTP or L2TP ports. or so they say

i can connect internally no problem with both PPTP and L2TP with IPsec.

but it just seems that when the request gets passed through the router/modem the server doesnt send the reply back through the same route.

 
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