Question Can't access Anandtech or the forums via wi-fi

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ch33zw1z

ch33zw1z

Lifer
Nov 4, 2004
39,747
20,322
146
BoomerD said:
Cable into a Netgear modem with 2 ethernet outputs. One to the R8000 for wifi. One to the R7600 for an ethernet switch. Wifi has been turned off on that one for almost 2 years.Is the problem double NAT? I thought that only happened when you run from one router to another...with wifi turned on in both.
NONE of this explains why rhe problem started about 10:00 am yesterday. Everything has been hunky-dory until then.
Click to expand...
Did I miss the modem model somewhere? I see the two soho routers, r8k and r7600

If you “modem” has more than one LAN port, it’s probably a router as well, which makes it a “gateway”.

So yea, likely double natted and using the same LAN IP ranges.

edit - to avoid double NAT: http://www.ezlan.net/router_AP.html

basically, both the r8k and r76k should be configured as a WAP.

Connection from the gateway to the two devices should be LAN to LAN.

Both devices should have DHCP service disabled,

Both devices should have an IP manually configured OUTSIDE of the gateways DHCP pool, but in the same subnet.

You can disable the wireless on either device once it’s configured

Both devices will still have 3 LAN ports that get their DHCP+DNS from the gateway

Since we don't really know how this is all put together yet, then the gateway is suspect as well for the original issue.
 
Last edited:
BoomerD

BoomerD

No Lifer
Feb 26, 2006
66,228
14,658
146
ch33zw1z said:
Did I miss the modem model somewhere? I see the two soho routers, r8k and r7600

If you “modem” has more than one LAN port, it’s probably a router as well, which makes it a “gateway”.

So yea, likely double natted and using the same LAN IP ranges.

edit - to avoid double NAT: http://www.ezlan.net/router_AP.html

basically, both the r8k and r76k should be configured as a WAP.

Connection from the gateway to the two devices should be LAN to LAN.

Both devices should have DHCP service disabled,

Both devices should have an IP manually configured OUTSIDE of the gateways DHCP pool, but in the same subnet.

You can disable the wireless on either device once it’s configured

Both devices will still have 3 LAN ports that get their DHCP+DNS from the gateway

Since we don't really know how this is all put together yet, then the gateway is suspect as well for the original issue.
Click to expand...
www.netgear.com

Nighthawk CM1100 Multi-Gig Cable Modem – DOCSIS 3.1 | NETGEAR

The CM1100 Multi-Gig Cable Modem uses DOCSIS 3.1 technology to ensure you get the fastest internet speeds of today and tomorrow. Buy now.
www.netgear.com www.netgear.com

There are two (yellow) LAN ports on the back. Each one connects to a separate wifi router.
 
VirtualLarry

VirtualLarry

No Lifer
Aug 25, 2001
56,585
10,225
126
BoomerD said:
There are two (yellow) LAN ports on the back. Each one connects to a separate wifi router.
Click to expand...
You're not supposed to connect two different routers to those ports, unless you're paying your ISP for two separate public IPs. Looks like they finally discovered your leaching, and cut you off.
 
ch33zw1z

ch33zw1z

Lifer
Nov 4, 2004
39,747
20,322
146
BoomerD said:
www.netgear.com

Nighthawk CM1100 Multi-Gig Cable Modem – DOCSIS 3.1 | NETGEAR

The CM1100 Multi-Gig Cable Modem uses DOCSIS 3.1 technology to ensure you get the fastest internet speeds of today and tomorrow. Buy now.
www.netgear.com www.netgear.com

There are two (yellow) LAN ports on the back. Each one connects to a separate wifi router.
Click to expand...

Ok, basically your configuration should have never worked "correctly". It's dual port to support a router that can do LACP (Link Aggregation Control Protocol), which neither of yours can AFAIK.

Basically, one of your routers should be set to "primary", connected to the Modem. The other router, if you choose to use it, should be configured as "WAP" the way the EZLan link explains.

The link between the two routers should be LAN to LAN, do NOT use the WAN port on the secondary router. Set a manual IP on the secondary, something in the same subnet but outside the DHCP range, disable DHCP and DNS. You want the primary to drive, all requests from clients to go to it with no stops in between.

You should also be able to login to the Modem itself using 192.168.100.1 to see what's up.
 
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BoomerD

BoomerD

No Lifer
Feb 26, 2006
66,228
14,658
146
OK, but why did it work for 2 years…and why does it only affect the Anandtech sites? If it didn’t work at all, I could understand…but it did…and still does, just not here.
 
BoomerD

BoomerD

No Lifer
Feb 26, 2006
66,228
14,658
146
sdifox said:
did you try using only one router yet?
Click to expand...

Nah…too many things going on this morning…Maybe this afternoon.

But, on one router, the AT sites connect…on the other, they don’t…but everything else does.
 
ch33zw1z

ch33zw1z

Lifer
Nov 4, 2004
39,747
20,322
146
BoomerD said:
Nah…too many things going on this morning…Maybe this afternoon.

But, on one router, the AT sites connect…on the other, they don’t…but everything else does.
Click to expand...

I know it's strange, but when you're running out of spec configs, YMMV.

Just reconfigure a little bit and you should be good to go. Just let us know if you have more questions.
 
M

manly

Lifer
Jan 25, 2000
13,242
4,022
136
Speaking of NAT, the history of the (Cisco) PIX is interesting and pre-dates RFC 1918:


 
BoomerD

BoomerD

No Lifer
Feb 26, 2006
66,228
14,658
146
OK, tomorrow I'm going to have to work on this. Tonight, it's even stopping me from accessing AT on my PC and ethernet connection. :colbert: (different router than the one I use for wifi)

Yet...

adl.sized.png
 
Last edited:
L

lantis3

Senior member
Oct 18, 2023
279
56
61
Use Windows Key + SHIFT + S to capture a window. Your full screenshot is completely blurry.

And what kind of errors you were getting when visiting www.anandtech.com and forums.anandtech.com?
 
L

lantis3

Senior member
Oct 18, 2023
279
56
61
So no problem pinging the www and forums

Then what errors you were getting on the PC?

Try to clear browser cache (choose 7 days if you don't want to clear all) if you are using Chrome

Clear cache & cookies - Computer - Google Account Help

When you use a browser, like Chrome, it saves some information from websites in its cache and cookies. Clearing them fixes certain problems, like loading or formatting issues on sites. In Chrome
support.google.com
 
BoomerD

BoomerD

No Lifer
Feb 26, 2006
66,228
14,658
146
lantis3 said:
So no problem pinging the www and forums

Then what errors you were getting on the PC?

Try to clear browser cache (choose 7 days if you don't want to clear all) if you are using Chrome

Clear cache & cookies - Computer - Google Account Help

When you use a browser, like Chrome, it saves some information from websites in its cache and cookies. Clearing them fixes certain problems, like loading or formatting issues on sites. In Chrome
support.google.com
Click to expand...
I’ve cleared the cache for all browsers, run the flush dns cmd, I get the same error I posted a screen pic of earlier in this thread. (Just not the phone version)

1715969956424.png

Yet, oddly enough, everything is working fine again this morning. <knock on wood>
 
L

lantis3

Senior member
Oct 18, 2023
279
56
61
BoomerD said:
I’ve cleared the cache for all browsers, run the flush dns cmd, I get the same error I posted a screen pic of earlier in this thread. (Just not the phone version)

View attachment 99150

Yet, oddly enough, everything is working fine again this morning. <knock on wood>
Click to expand...

So it's working now or not? Have you changed the DNS on the router to suggested public DNS?
 
marees

marees

Golden Member
Apr 28, 2024
1,752
2,382
96
I've got the dreaded "your i/p address is blocked" on my home wifi connection

I am typing this using mobile data now
 
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