Solved Connected to LAN but not to Internet

[jzjr]

Hi,

I have recently acquired a used PC with Windows 7 installed, I plan to use it as a Media and PVR Server hence I would rather use Windows 7 than 10 because of the automatic reboots.

Since this morning I have been unable to access the internet on this PC but have been able to access the LAN with no problems. This happens both when part of an AD Domain and when separated from an AD Network and happens when connected to multiple ports on the network switch and when directly connected to the router.

I have set a static IP and static DNS options, as well as trying alternative public DNS servers - I have released and renewed DHCP and cleared ARP tables. It appears that I am unable to reach the gateway from this PC however there is no reason that I shouldn't be able to do so. When viewing the output of IPCONFIG /ALL everything appears as it should as far as I can tell. This information is included below.

The router I am using is a Draytek Vigor 2860.

I have searched for help on this issue and have found a lot of advice however nothing that has been suggested has helped me so far. I am looking for alternative solutions before I buy and test a new NIC to see if that fixes the issues.

If anyone has any advice or solutions to this I would be very grateful.

Output from troublesome Windows 7 PC​

C:\Users\locadmin>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : PVR01
   Primary Dns Suffix  . . . . . . . :
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : BoniServe.lan

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : BoniServe.lan
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 00-22-64-BF-AA-4C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.131.1(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Lease Obtained. . . . . . . . . . : 03 May 2017 17:25:38
   Lease Expires . . . . . . . . . . : 11 May 2017 17:25:38
   Default Gateway . . . . . . . . . : 192.168.130.1
   DHCP Server . . . . . . . . . . . : 192.168.130.2
   DNS Servers . . . . . . . . . . . : 192.168.130.2
   Primary WINS Server . . . . . . . : 192.168.130.2
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.BoniServe.lan:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : BoniServe.lan
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Output from another working PC running Windows 10 x64​

C:\Users\fred.BoniServe>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : DESKTOP-FRED
   Primary Dns Suffix  . . . . . . . : BoniServe.lan
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : BoniServe.lan

Ethernet adapter Ethernet:

   Connection-specific DNS Suffix  . : BoniServe.lan
   Description . . . . . . . . . . . : Killer E2500 Gigabit Ethernet Controller
   Physical Address. . . . . . . . . : 1C-1B-0D-90-82-5B
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   IPv4 Address. . . . . . . . . . . : 192.168.140.12(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Lease Obtained. . . . . . . . . . : 02 May 2017 20:56:02
   Lease Expires . . . . . . . . . . : 10 May 2017 20:56:01
   Default Gateway . . . . . . . . . : 192.168.130.1
   DHCP Server . . . . . . . . . . . : 192.168.130.2
   DNS Servers . . . . . . . . . . . : 192.168.130.2
   Primary WINS Server . . . . . . . : 192.168.130.2
   NetBIOS over Tcpip. . . . . . . . : Enabled

Thanks
Fred

 

[samuria]

Welcome to the forum. From a CMD prompt type tracert 194.172.118.66 post results let's see were it goes

 

[jzjr]

Thanks for your reply,

The output of tracert is:

C:\Users\locadmin>TRACERT 194.172.118.66

Tracing route to 194.172.118.66 over a maximum of 30 hops

  1    <1 ms    <1 ms    <1 ms  192.168.130.1
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4     *        *        *     Request timed out.
  5     *        *        *     Request timed out.
  6     *        *        *     Request timed out.
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.

And continues on this way.

I have checked the log on the router and have seen this NAT session listed

LOCAL IP:PORT - #PSUEDO PORT - PEER IP:PORT - INTERFACE
192.168.131.1:0 - 0 -  194.172.118.66:0 - WAN1

I have also found that I cannot ping the Router from the Machine or the Machine from the Router, however the Machine is listed as a connected device on the router.

Thanks
Fred

 

[samuria]

Any firewall installed or Mac filtering on router

 

[jzjr]

No, tried resetting router to defaults and turning off all firewalls and security measures to be sure.

On a more positive note it has randomly started working again, no changed have been made since last reboot.

I will post back if it happens again - hopefully if it does I can gather more information about changes.

Thanks for your help,
Fred.

 

[samuria]

Faulty cable or its close to noise used to get that a lot with old cables

 

[lvlpost]

Have you tried other computers accessing the internet?

Replace the LAN cable, disable Firewall and Antivirus. If necessary, check your router