Two VPN connections from the same IP address
I have set up a server running Windows Server 2008 which two remote users can dial into using a VPN connection. It works fine unless they are both in the same location, in which case only one of them can connect.
I understand this is because the PPTP protocol cannot cope with two VPN connections from the same IP address. Is this correct? If so, what can I do about it?
Please note that the remote location in question is a serviced office, so we're not in a position to change or play around with their router.
Thanks!
vpn ip pptp
asked Apr 11 '12 at 10:41
TaylesTayles
3124
add a comment |
I have set up a server running Windows Server 2008 which two remote users can dial into using a VPN connection. It works fine unless they are both in the same location, in which case only one of them can connect.
I understand this is because the PPTP protocol cannot cope with two VPN connections from the same IP address. Is this correct? If so, what can I do about it?
Please note that the remote location in question is a serviced office, so we're not in a position to change or play around with their router.
Thanks!
vpn ip pptp
asked Apr 11 '12 at 10:41
TaylesTayles
3124
When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53
add a comment |
I have set up a server running Windows Server 2008 which two remote users can dial into using a VPN connection. It works fine unless they are both in the same location, in which case only one of them can connect.
I understand this is because the PPTP protocol cannot cope with two VPN connections from the same IP address. Is this correct? If so, what can I do about it?
Please note that the remote location in question is a serviced office, so we're not in a position to change or play around with their router.
Thanks!
vpn ip pptp
asked Apr 11 '12 at 10:41
TaylesTayles
3124
I have set up a server running Windows Server 2008 which two remote users can dial into using a VPN connection. It works fine unless they are both in the same location, in which case only one of them can connect.
I understand this is because the PPTP protocol cannot cope with two VPN connections from the same IP address. Is this correct? If so, what can I do about it?
Please note that the remote location in question is a serviced office, so we're not in a position to change or play around with their router.
Thanks!
vpn ip pptp
vpn ip pptp
asked Apr 11 '12 at 10:41
TaylesTayles
3124
asked Apr 11 '12 at 10:41
TaylesTayles
3124
asked Apr 11 '12 at 10:41
TaylesTayles
3124
asked Apr 11 '12 at 10:41
TaylesTayles
3124
asked Apr 11 '12 at 10:41
TaylesTayles
3124
3124
When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53
add a comment |
When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53
When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53
When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53
add a comment |
2 Answers
2
active
oldest
votes
Hamachi isn't an industrial VPN, but it provides a secure connection and is fairly simple to set up. VPNs like Hamachi with multiple networking modes may resolve the issue your having with PPTP.
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
add a comment |
The only two problems I can think about is this is either a restriction on the VPN server and you may want to check settings, a bad/faulty/not powerful enough router that isn't handling multiple VPN connections well*, or you are using a web edition of Windows Server which is limited to one (I think) concurrent VPN connection.
* I have seen many routers that have their own VPN features fail when trying to use PPTP or VPN technologies behind
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Hamachi isn't an industrial VPN, but it provides a secure connection and is fairly simple to set up. VPNs like Hamachi with multiple networking modes may resolve the issue your having with PPTP.
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
add a comment |
Hamachi isn't an industrial VPN, but it provides a secure connection and is fairly simple to set up. VPNs like Hamachi with multiple networking modes may resolve the issue your having with PPTP.
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
add a comment |
Hamachi isn't an industrial VPN, but it provides a secure connection and is fairly simple to set up. VPNs like Hamachi with multiple networking modes may resolve the issue your having with PPTP.
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
Hamachi isn't an industrial VPN, but it provides a secure connection and is fairly simple to set up. VPNs like Hamachi with multiple networking modes may resolve the issue your having with PPTP.
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
answered Apr 11 '12 at 11:14
dcd0687dcd0687
1113
1113
add a comment |
add a comment |
The only two problems I can think about is this is either a restriction on the VPN server and you may want to check settings, a bad/faulty/not powerful enough router that isn't handling multiple VPN connections well*, or you are using a web edition of Windows Server which is limited to one (I think) concurrent VPN connection.
* I have seen many routers that have their own VPN features fail when trying to use PPTP or VPN technologies behind
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
add a comment |
The only two problems I can think about is this is either a restriction on the VPN server and you may want to check settings, a bad/faulty/not powerful enough router that isn't handling multiple VPN connections well*, or you are using a web edition of Windows Server which is limited to one (I think) concurrent VPN connection.
* I have seen many routers that have their own VPN features fail when trying to use PPTP or VPN technologies behind
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
add a comment |
The only two problems I can think about is this is either a restriction on the VPN server and you may want to check settings, a bad/faulty/not powerful enough router that isn't handling multiple VPN connections well*, or you are using a web edition of Windows Server which is limited to one (I think) concurrent VPN connection.
* I have seen many routers that have their own VPN features fail when trying to use PPTP or VPN technologies behind
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
The only two problems I can think about is this is either a restriction on the VPN server and you may want to check settings, a bad/faulty/not powerful enough router that isn't handling multiple VPN connections well*, or you are using a web edition of Windows Server which is limited to one (I think) concurrent VPN connection.
* I have seen many routers that have their own VPN features fail when trying to use PPTP or VPN technologies behind
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
answered Apr 12 '12 at 7:05
William HilsumWilliam Hilsum
108k16160253
108k16160253
add a comment |
add a comment |
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When you say "from the same IP address", you mean the endpoint of the TCP connection itself? There's no reason that should present a problem. PPTP is layered over TCP, which has no such limitation.
– David Schwartz
Apr 11 '12 at 10:53