TL-R600VPN VPN usage problem

TL-R600VPN VPN usage problem
TL-R600VPN VPN usage problem
2013-01-24 23:51:36
Region : Hongkong

Model : TL-R600VPN

Hardware Version : V1

Firmware Version :

ISP :


Hi,

I have a TL-R600VPN on one-end with PPTP service enabled. The other end is a TL-WR841N wireless router. My host is connected to TL-WR841 and successfully connected to the PPTP service on TL-R600VPN. I have iPhone, Android and Windows 7 PCs. Many internet sites are accessible however some are not.

For example, I am able to ping www.expedia.com from command line while connected to VPN. However I am not able to access it from IE, Firefox or Chrome. As soon as I disconnect VPN, the the browser can connect to the sites fine. Some other sites with the same issues include www.tripadvisor.com, www.bloomberg.com/radio. The symptoms are exactly the same.

I am reasonably technical but don't what to do next to troubleshoot this. Also I have the same issues on several different PCs and ISPs so not a machine or ISP related issue.

Thanks
Frank
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#1
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6 Replies
Re:TL-R600VPN VPN usage problem
2013-01-25 02:28:29
Do you have blocked some ports? Try to add manually a dns server on youre device.
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Re:TL-R600VPN VPN usage problem
2013-01-25 03:13:48
Thanks Dabi.

No, I don't think I blocked any ports, all default settings on the routers. By device, you mean my PCs right? I tried that as well, still the same issues. I can see the traveladvisor hung on c1.tacdn.com.
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#3
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Re:TL-R600VPN VPN usage problem
2013-01-25 06:34:50
yes your pc or on the android . Try googles 8.8.8.8. whats with your ip ranges? Please descripe these . Perhaps you need a static route or you have to fill in the gateway from your host . Please give some more informations.
KR
Dabi
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#4
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Re:TL-R600VPN VPN usage problem
2013-01-25 10:43:21
Tried Google's DNS, the same problem.

Below is the network configuration info of the host and VPN server. The default gateway is set correctly otherwise none of the web sites should work. The problems seem more relate to web analytic URL embeded in the problem sites.

Host Configuration

PPP adapter VPN:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VPN
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.200(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . : 0.0.0.0
DNS Servers . . . . . . . . . . . : 8.8.8.8
NetBIOS over Tcpip. . . . . . . . : Enabled


Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) Advanced-N 6205S
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
IPv4 Address. . . . . . . . . . . : 192.168.1.106(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Friday, January 25, 2013 8:02:04 AM
Lease Expires . . . . . . . . . . : Friday, January 25, 2013 10:02:04 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 244084826
DHCPv6 Client DUID. . . . . . . . :
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

On TL-R600VPN
LAN IP Address: 192.168.0.8
Subnet Mask: 255.255.255.0
VPN IP Range: 192.168.0.200 - 192.168.0.215

Also configured DDNS on the server
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Re:TL-R600VPN VPN usage problem
2013-01-25 18:24:48
hmm looks good. I have no more idea. Sorry
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#6
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Re:TL-R600VPN VPN usage problem
2013-01-26 00:57:40
In case someone having the same problem, this has been resolved. Apparently this is a common MTU size problem, which i managed to resolve by reducing the MTU size to 1300 on my PPTP connection. On Windows 7, with the following command (Run as Administrator).
netsh interface ipv4 set subinterfaces "VPN" mtu=1300 store=persistent

This is a useful thread: http://www.dd-wrt.com/phpBB2/viewtopic.php?t=86329&postdays=0&postorder=asc&start=0

Wondering whether I can set MTU size on TL-R600 router? there is no such option in the web admin interface.
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#7
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