Question Strange Router Behaviour

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robburne

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Jul 31, 2005
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Hopefully I have posted this in the correct forum.

I have a home network - with a PC and MAC connect via wifi on the IP range 192.168.0.x - all works fine.

I have a 2nd network that is has a router running OpenWRT which connects to a VPN provider - it uses 192.168.1.1

Both have been working fine until recently, when I try to connect my Win11 box to the Openwrt router pages won't open and the wifi icon on the taskbar mostly says "no internet" when I am connected to the network. The MAC on the other hand connect fine and I can browse the net.

I've tried the following:

- flushing dns cache
- different brwosers (chrome and Edge)
- disabling the windows firewall and 3rd party firewall
- rebooting the pc
- reboot the router

I also don't seem to be able to connect to the routers admin panel so seems this is not a dns issue. The browser some time appears to be connecting and then I receive a "not secure" connection message - if I click advanced and continue it then gives "page cannot be found".

As mentioned previously the Win11 box worked fine on the problematic connection so seems something recently has caused it to fail.

I'm all out of ideas - anyone?
 
kanewolf

kanewolf

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May 29, 2013
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robburne said:
Hopefully I have posted this in the correct forum.

I have a home network - with a PC and MAC connect via wifi on the IP range 192.168.0.x - all works fine.

I have a 2nd network that is has a router running OpenWRT which connects to a VPN provider - it uses 192.168.1.1

Both have been working fine until recently, when I try to connect my Win11 box to the Openwrt router pages won't open and the wifi icon on the taskbar mostly says "no internet" when I am connected to the network. The MAC on the other hand connect fine and I can browse the net.

I've tried the following:

- flushing dns cache
- different brwosers (chrome and Edge)
- disabling the windows firewall and 3rd party firewall
- rebooting the pc
- reboot the router

I also don't seem to be able to connect to the routers admin panel so seems this is not a dns issue. The browser some time appears to be connecting and then I receive a "not secure" connection message - if I click advanced and continue it then gives "page cannot be found".

As mentioned previously the Win11 box worked fine on the problematic connection so seems something recently has caused it to fail.

I'm all out of ideas - anyone?
Click to expand...
Could you have set a static IP on the Windows PC? Open a cmd.exe window. Run ipconfig.exe /all Post the output. There is nothing in the results that are a security issue.
 
R

robburne

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Jul 31, 2005
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kanewolf said:
Could you have set a static IP on the Windows PC? Open a cmd.exe window. Run ipconfig.exe /all Post the output. There is nothing in the results that are a security issue.
Click to expand...
I forgot to add that I am using a static ip in all cases - I will run the command though and post an update... thank you.
 
B

bill001g

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Aug 9, 2012
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If I understand correctly you set your ip to 192.168.1.10 and then attempt to connect to the router at 192.168.1.1. I will also assume you are actually plugged into that router. Note make sure you use the numeric IP address.

If this fails it is very strange. Check that you have the subnet mask correct.

What happens if you use a simple ping command to the 192.168.1.1 ip address. If this work but the browser does not I would be suspect of some setting in windows blocking the browser traffic. Try to use the option to temporary disable the windows firewall and verify that the network is considered private rather than public.
 
R

robburne

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Jul 31, 2005
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The result of ipconfig /all

Windows IP Configuration

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

Ethernet adapter Ethernet:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Ethernet Connection (5) I219-LM
Physical Address. . . . . . . . . : xxxxxx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #3
Physical Address. . . . . . . . . : xxxxxx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 12:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #4
Physical Address. . . . . . . . . : xxxxxx
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter WiFi:

Connection-specific DNS Suffix . : lan
Description . . . . . . . . . . . : Intel(R) Dual Band Wireless-AC 8265
Physical Address. . . . . . . . . : xxxxxx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.245(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 30 October 2024 18:49:06
Lease Expires . . . . . . . . . . : 31 October 2024 06:53:03
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 8.8.8.8
8.8.4.4
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : xxxxxx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

At the moment the connection is working, then a few minutes it stops responding. I have not changed anything since when I tested this last week.....
 
B

bill001g

Titan
Aug 9, 2012
29,019
3,022
128,640
Does the IPCONFIG information change from when it works and when it does not.

In this case you are using DHCP to get the IP. Do you still see a IP assigned and is it the same as when it works and does not.

Can you ping 192.168.1.1. If not what happens if you do IPCONFIG /release and then IPCONFIG /renew. Since the DHCP server is the router and if it would give you a IP address even if it is the same means you can talk to the router.

Now if you can ping the 192.168.1.1 but you still have no internet access I would be suspect of your vpn configuration on the router or maybe the second router has a issue talking to the main router.
 
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