[DESTROYED] "access point" "no internet"

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pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 2:35    Post subject: [DESTROYED] "access point" "no internet" Reply with quote
Greetings!
I am not certain how "advanced" this networking question is, but it seemed to be the closest match.
I have a TP-Link C2300 router connected to a cable modem with (4) WAN ports, inside my home, 192.168.0.xxx subnet.
I have Ethernet cable run to my shop, in which I have a Netgear WNDR3400v1 flashed with DD-WRT Build# dd-wrt.v24-33772_NEWD-2_K2.6_mini-WNDR3400, 192.168.1.xxx subnet. I set (different) SSIDs and passwords and matched security settings to house (WPA2)
I've configured the Netgear as an access point, and the Ethernet cable connects to LAN ports on both routers.

I can login to DD-WRT in the shop (but not from the house, which is expected behavior) and I can connect to both 2.4 and 5.0 in the shop, but I get "No Internet." Should I connect the Ethernet cable to one of the WAN parts on the cable modem, or am I missing something simple in my configuration on the Netgear running DD-WRT?

Thank you, in advance.
Pete

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.


Last edited by pmarion on Sat Feb 11, 2023 14:52; edited 3 times in total
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dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 1899

PostPosted: Tue Jan 24, 2023 5:53    Post subject: Reply with quote
Your C2300 doesn't have 4 WAN ports. One blue port (WAN), 4 yellow ports (LAN).

https://www.tp-link.com/us/home-networking/wifi-router/archer-c2300/

https://wikidevi.wi-cat.ru/TP-LINK_Archer_C2300_v1.x

Routers should be connected LAN < - > LAN, 192.168.0.x (x being the 4th octet of your C2300's LAN IP) set as the gateway address in the Setup -> Basic Setup tab in DD-WRT. Presuming you followed the Wired Access Point Wiki.

Up to you to upgrade to the current release. But some people seem to fail to understand that this forum's build threads are for reporting information under Build Notes in the device wiki and how much of a DISSERVICE they are doing to the community by not providing all information required to fix any possible issues.

https://ftp.dd-wrt.com/dd-wrtv2/downloads/betas/2023/01-19-2023-r51440/broadcom_K3X/

https://ftp.dd-wrt.com/dd-wrtv2/downloads/betas/2023/01-19-2023-r51440/broadcom_K26/

_________________
"The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost

"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio

<fact>code knows no gender</fact>

This is me, knowing I've ruffled your feathers, and not giving a ****
Some people are still hard-headed.

--------------------------------------
Mac Pro (Mid 2012) - Two 2.4GHz 6-Core Intel Xeon E5645 processors 64GB 1333MHz DDR3 ECC SDRAM OpenSUSE Leap 15.5
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12837
Location: Netherlands

PostPosted: Tue Jan 24, 2023 7:21    Post subject: Reply with quote
The setup you have for the DDWRT router is called a Wireless Access Point (WAP).

Actually it should work if properly setup, but your build is old and outdated so perhaps it is the build which is at fault.

Current build is 51440 but do proper research first see: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087

I setup a WAP like this:
A WAP is a secondary router connected wired LAN<>LAN on the same subnet as the primary router.
Setup:
• On Basic Setup page:
o WAN disabled
o DHCP server Disabled (=off and NOT set as Forwarder!)
o Local IP address in subnet of primary router but outside DHCP scope, make sure the used IP address is unique on your network you cannot have duplicates.
o Gateway and Local DNS pointing to primary router
• Keep DNSMasq enabled (both on Basic Setup page and Services page)
• On Setup > Advanced Routing, keep Operating mode in the default Gateway (the wiki says Router mode but do not do that, either it does not matter (this case) or break things)
• On Security > Firewall keep the SPI Firewall enabled, although you do not want a firewall it will be automatically disabled as there is no WAN so no need to change this setting form default.
• Connect LAN <> LAN (do not use the WAN port unless you really need that extra port, for most routers traffic still must use the CPU so performance is lacklustre and there are some routers where the WAN port is not added to the br0 so the WAN port could be non-functional on some routers).

Note: For Broadcom routers for best throughput enable CTF on Basic Setup Page

You have to add the following rule to the firewall in order to get internet access from clients attached to the VAP/Bridge.
In the web-interface of the router (the WAP): Administration > Commands save Firewall:
#Always necessary (alternatively set static route on main router and NAT traffic from VAP/Bridge out via WAN):
Code:
iptables -t nat -I POSTROUTING -o br0 -j SNAT --to $(nvram get lan_ipaddr)

_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 14:02    Post subject: Reply with quote
dale_gribble39 wrote:
Your C2300 doesn't have 4 WAN ports. One blue port (WAN), 4 yellow ports (LAN).

Understood, I believe I said my Cable Modem has 4 WAN ports.

I did not add the gateway, that is undoubtedly the issue.

Concerning the old build, I searched google and read that I should not flash the WNDR3400 with a newer build or it will brick it.

EDIT: Apparently I can run dd-wrt.v24-48322_NEWD-2_K2.6_big-nv64k.bin as per the WIKI link you included - thank you.

Since the DB is out of date, it is difficult to ascertain what is the latest and correct info. Is there a newer build that is safe for this router?

EDIT#2: You said "Current build is 51440 but do proper research first see: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087" - I'll also look into this, thank you.

Thank you for your replies. I will now follow your links and read.

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.


Last edited by pmarion on Tue Jan 24, 2023 15:27; edited 1 time in total
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 15:26    Post subject: Reply with quote
Having read through all of your links, I presume that it will be safe to flash to dd-wrt.v24-51440_NEWD-2_K3.x_mega-WNDR3400.chk. This is under the size limit for the router, and presumably, trailered firmwares should be safe.

Thank you both, again.

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 12837
Location: Netherlands

PostPosted: Tue Jan 24, 2023 17:08    Post subject: Reply with quote
Let us know if that build works and please also report in the build thread also if it does not work: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=333738
_________________
Routers:Netgear R7000, R6400v1, R6400v2, EA6900 (XvortexCFE), E2000, E1200v1, WRT54GS v1.
Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 17:32    Post subject: Reply with quote
I think it bricked it.
I flashed it and waited 10 minutes, and could not access. rebooted, waited 10 minutes, could not access, factory reset, after 10 min, still cannot access. Sad

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.
dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 1899

PostPosted: Tue Jan 24, 2023 19:55    Post subject: Reply with quote
We need serial console output most likely for the developer; and this is where command line flashing comes in handy. This is why I linked the device wiki, the intention was not necessarily to go all the way to current, but the last non-forum-reported known good build, first. I second the notion to report in the build thread for developer review.

Also, I don't know of a cable modem with 4 WAN ports. Usually, unless your upstream connection is ethernet, they are LAN ports. If you require assistance in setting up serial console to get output from the device (hopefully), let us know.

_________________
"The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost

"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio

<fact>code knows no gender</fact>

This is me, knowing I've ruffled your feathers, and not giving a ****
Some people are still hard-headed.

--------------------------------------
Mac Pro (Mid 2012) - Two 2.4GHz 6-Core Intel Xeon E5645 processors 64GB 1333MHz DDR3 ECC SDRAM OpenSUSE Leap 15.5
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 21:08    Post subject: Reply with quote
Re: a serial port - I presume I won't need an RS232 port, as none of my PCs have one. Also, I am running windows 11. I can load Linux on an old laptop if needed. (I have *some* Linux experience from my (former) job - I'm retired now.)
For now, I am going to use an old Belkin N600 for the AP, to get me up & running.

Thank you

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.


Last edited by pmarion on Wed Jan 25, 2023 1:20; edited 1 time in total
Alozaros
DD-WRT Guru


Joined: 16 Nov 2015
Posts: 6409
Location: UK, London, just across the river..

PostPosted: Tue Jan 24, 2023 21:50    Post subject: Reply with quote
that's the serial adapter you'd need.... https://www.amazon.com/IZOKEE-CP2102-Converter-Adapter-Downloader/dp/B07D6LLX19/ref=sr_1_8?keywords=usb+to+ttl+adapter&qid=1674596641&sr=8-8

you do not need an old PC with serial ports Cool

No idea how the crap Win 11 will do with serial recovery and if it will find drivers for the adapted, but my win 7 works well..and has the drivers too..

you could do with linux too... give a try to win 11
when connecting to the serial you'd need the GRD and TX goes to RX and RX goes to TX Wink
very rare cases router would need 3.3v connection...

_________________
Atheros
TP-Link WR740Nv1 ---DD-WRT 55179 WAP
TP-Link WR1043NDv2 -DD-WRT 55303 Gateway/DoT,Forced DNS,Ad-Block,Firewall,x4VLAN,VPN
TP-Link WR1043NDv2 -Gargoyle OS 1.15.x AP,DNS,QoS,Quotas
Qualcomm-Atheros
Netgear XR500 --DD-WRT 55460 Gateway/DoH,Forced DNS,AP Isolation,4VLAN,Ad-Block,Firewall,Vanilla
Netgear R7800 --DD-WRT 55460 Gateway/DoT,AD-Block,Forced DNS,AP&Net Isolation,x3VLAN,Firewall,Vanilla
Netgear R9000 --DD-WRT 55363 Gateway/DoT,AD-Block,AP Isolation,Firewall,Forced DNS,x2VLAN,Vanilla
Broadcom
Netgear R7000 --DD-WRT 55460 Gateway/SmartDNS/DoH,AD-Block,Firewall,Forced DNS,x3VLAN,VPN
NOT USING 5Ghz ANYWHERE
------------------------------------------------------
Stubby DNS over TLS I DNSCrypt v2 by mac913
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 22:27    Post subject: Reply with quote
Thanks. If I can recover it, I'll try again to ensure I did not botch something in progress. Then I will provide output.
_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Tue Jan 24, 2023 22:48    Post subject: Reply with quote
Not bricked! It was HOT! I powered it off for an hour or so, and when I fired it back up, it was fine. The firmware did NOT flash, however. (I did clear browser cache.) I guess I'll try again.

EDIT: Flashed it again, did the 30-30-30, router is hot again and will not load the GUI or respond to ping. Powering off for a while again, at least until it's cool.

EDIT2: Confirmed that it won't flash to that new version (using the GUI). Although it seems to go through the flash process, after all is said and done, it remains the same firmware. I even used a browser I had not used with this router this time, so it's definitely not cache.

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.
dale_gribble39
DD-WRT Guru


Joined: 11 Jun 2022
Posts: 1899

PostPosted: Tue Jan 24, 2023 23:44    Post subject: Reply with quote
So, we will still need serial console output / command line flash output to determine what the problem is with the firmware image, please. Thanks.
_________________
"The woods are lovely, dark and deep,
But I have promises to keep,
And miles to go before I sleep,
And miles to go before I sleep." - Robert Frost

"I am one of the noticeable ones - notice me" - Dale Frances McKenzie Bozzio

<fact>code knows no gender</fact>

This is me, knowing I've ruffled your feathers, and not giving a ****
Some people are still hard-headed.

--------------------------------------
Mac Pro (Mid 2012) - Two 2.4GHz 6-Core Intel Xeon E5645 processors 64GB 1333MHz DDR3 ECC SDRAM OpenSUSE Leap 15.5
pmarion
DD-WRT Novice


Joined: 24 Jan 2023
Posts: 26
Location: PA, USA

PostPosted: Wed Jan 25, 2023 0:54    Post subject: Reply with quote
OK, let me search for details on the serial cable and then I will come back for instructions.
EDIT: Cable will arrive on Friday.

Is it worth attempting to flash it using putty (sftp or telnet)? Would you mind pointing me toward those instructions?
Thank you!

_________________
- My memory's not as sharp as it used to be. Also, my memory's not as sharp as it used to be.
- The nice thing about being senile is you can hide your own Easter eggs.
- God grant me the senility to forget the people I never liked, the good fortune to run into the ones I do, and the vision to tell the difference.
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 14125
Location: Texas, USA

PostPosted: Wed Jan 25, 2023 2:19    Post subject: Reply with quote
https://wiki.dd-wrt.com/wiki/index.php/Netgear_WNDR3400

https://wiki.dd-wrt.com/wiki/index.php/Tftp_flash

https://wiki.dd-wrt.com/wiki/index.php/Serial_Recovery

https://openwrt.org/toh/netgear/wndr3400#wndr3400v1_restore_netgear_factory_image


Other further reading (I was trying to find the definitive serial pinout!):

https://duckduckgo.com/?q=netgear+WNDR3400+serial+port+pinout+site%3Aforum.dd-wrt.com

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=155557

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=258117

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318472

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=156417

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