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Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 13:52

VPN access with server 2003 to the domain network at work.

The network at work is set up like this...

i think ive configured the Server right to allow VPN access.

Got some port forwarding set up on the router/firewall.
UDP 500
UDP 4500
UDP 1701

DNS set up on the router for server and the isp (just did this. and now when i try to connect it instantly tells me it cant find the VPN server error 800 - previously it took about 10 seconds to say this) - so i think im getting there. slowly. lol

i know the modem is working fine as i can connect to the router settings via the internet fine.

Anyone know what else i can do?

[Edited on 16-05-2005 by Houckham]

[Edited on 09-06-2005 by Houckham]

willay

Moderator
Organiser: South East, National Events
Premium Member

Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline

13th May 05 at 13:54

checked the logs of the vpn server to see if a connection is being established?

Ally

Member

Registered: 2nd Jul 03
Location: Pontypool Drives: a Skoda
User status: Offline

13th May 05 at 13:55

U2U Richie

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 13:56

quote:
Originally posted by willay
checked the logs of the vpn server to see if a connection is being established?

ill do that now...

quote:
Originally posted by Ally
U2U Richie

also that cheers

Tim

Site Administrator

Registered: 21st Apr 00
User status: Offline

13th May 05 at 14:01

L2TP IPSEC or PPTP based VPN?

If your router has a 'passthrough' mode then that opens up the necessary protocols. You need IP protocol 50 and 51 for IPSEC and protocol 47 (GRE) for PPTP.

PPTP will also need 1723/tcp.

In routing and remote access on the server you can specify the type. I assume you've just got a default setup and got both open... If you're connecting from a windows desktop then it'll automatically work it out, but you can force it to try connecting via pptp or l2tp in the network connection properties.

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:07

tim i just enable forwarding on TCP 1723

then tested it. and it said varifying username and password for about 20 seconds then came up with a diffrent wrror code.

but just tried again and back to usual 800 server not reachable

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:12

dunno if this has anything to do with it. but just lost internet connection at work.

it should have done that should it?

just restarting modem now. to try to connect.

[Edited on 13-05-2005 by Houckham]

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:15

error 619 again connection was lost

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:19

ive just google'd about for similar problems.
it looks like the modem is closing the port.
i dont know why yet. but something abut trying to use the same port more than once.

TNM

Member

Registered: 5th Apr 04
Location: Nottingham Drives: VW Tiguan
User status: Offline

13th May 05 at 14:35

Cisco PIX.

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:45

Ive just read a thread about this problem.
and they said sometimes the ISP blocks the port because VPN does not link in with their TOS... anythoughts?

Oh Tim... should i also forward port 47?

willay

Moderator
Organiser: South East, National Events
Premium Member

Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline

13th May 05 at 14:49

quote:
Originally posted by Tim
L2TP IPSEC or PPTP based VPN?

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 14:50

quote:
Originally posted by willay

quote:
Originally posted by Tim
L2TP IPSEC or PPTP based VPN?

how do i find this out?

willay

Moderator
Organiser: South East, National Events
Premium Member

Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline

13th May 05 at 14:55

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

13th May 05 at 15:01

its set to automatic on the client.

Richie

Member

Registered: 3rd Dec 02
Location: Newport, Wales
User status: Offline

13th May 05 at 15:05

you could u2u me the details and i could try and connect, at least you will know if its the server or not then

Tim

Site Administrator

Registered: 21st Apr 00
User status: Offline

13th May 05 at 15:05

Not port 47, PROTOCOL 47

i.e. TCP is a protocol, UDP is a protocol...

What have you got open on the server (routing and remote access panel) -- pptp or l2tp listeners?

someone

Member

Registered: 13th Aug 02
Location: Surrey
User status: Offline

13th May 05 at 16:09

set up a vpn client to connect to the internal ip address
this will then prove that its the router on wards.

also useful to proving to directors that the vpn is working and it is their end thats failing later on.

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

16th May 05 at 14:21

quote:
Originally posted by someone
set up a vpn client to connect to the internal ip address
this will then prove that its the router on wards.

also useful to proving to directors that the vpn is working and it is their end thats failing later on.

yeah it works connecting internally. using vpn.

so does that mean its either the router or the modem?

Houckham

Member

Registered: 29th May 03
Location: Newcastle upon Tyne
User status: Offline

16th May 05 at 16:10

ttt

Melville

Member

Registered: 4th Jun 03
Location: Newcastle upon Tyne
User status: Offline

16th May 05 at 20:58

everytime I try and connect remotely it disconnects the internet :?

someone

Member

Registered: 13th Aug 02
Location: Surrey
User status: Offline

16th May 05 at 23:27

quote:
Originally posted by Houckham

quote:
Originally posted by someone
set up a vpn client to connect to the internal ip address
this will then prove that its the router on wards.

also useful to proving to directors that the vpn is working and it is their end thats failing later on.

yeah it works connecting internally. using vpn.

so does that mean its either the router or the modem?

yes looks like you got to open the correct ports

as for disconnecting the internet .... on the client machine you are trying to connect from? erm ... so it trys to connect fails drops out and then you have no internet?

try running a tracert to see if the internet is still trying to get net access through the vpn connection that failed?

[Edited on 16-05-2005 by someone]

[Edited on 16-05-2005 by someone]

Melville

Member

Registered: 4th Jun 03
Location: Newcastle upon Tyne
User status: Offline

17th May 05 at 08:02

Sorry didnt make myself very clear....when someone attempts to connect remotely via VPN it disconnects the works internet conection

[Edited on 17-05-2005 by Melville]

Melville

Member

Registered: 4th Jun 03
Location: Newcastle upon Tyne
User status: Offline

17th May 05 at 18:05

someone

Member

Registered: 13th Aug 02
Location: Surrey
User status: Offline

17th May 05 at 18:16

strange -what do you have to do to get it back?

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