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mdcan

13 posts

Geek


#154247 22-Oct-2014 10:42
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I have a web server running on my home network and I was recently put in the position where I had to replace the modem/router that was supplied to me by Spark (telecom at the time I got the device), because the wifi was becoming faulty.

I decided that I would go all out so I bought the Linksys WRT1900ac wireless router. My plan was to use the wrt1900ac as the router for all devices on my network and use the original modem/router from Spark as just a modem.

However I had problems with this setup. For some reason the web server could not connect the the internet and there were just never-ending issues. So after a bit of research I decided that I would purchase a DrayTek Vigor 120 and use the PPPoA/PPPoE passthrough feature. That way my router would be the 'face' of my network (connected through PPPoE) and the web server would have no problem receiving requests and dishing out web pages.

However this did not work as expected either. When I connected the DrayTek and set it up correctly and then set the Spark username and password from the WRT1900ac menu computers on my network could only access certain webpages (for example vodafone.co.nz worked but spark.co.nz did not). On top of this my web server was not able to serve up web pages.

So at the moment I have the DrayTek connected to Spark and it is giving the connection to my WRT1900ac through DHCP. This is giving computers on the network internet access, however the web server does not have a connection.

What I need is to make the WRT1900ac the first thing that internet traffic hits when it comes into my network, however I have not been able to get PPPoA/PPPoE passthrough working correctly. What am I missing?

Of course I have sited the following for more info already:

 

  • http://www.draytek.net.nz/draytek/support/passthrough/
  • http://help.spark.co.nz/app/answers/detail/a_id/1180/~/broadband-settings-for-third-party-modems

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Mattmannz
470 posts

Ultimate Geek


  #1159961 22-Oct-2014 13:23
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So you put the Draytek into full bridge mode and setup a PPOE profile on the Linksys with your authentication details?

Did you get any errors on the Linksys? What was the status of the PPOE connection?

You say that currently your webserver can't connect to the internet - have you got it set as a DMZ host or are you using port forwarding?

Matt

mdcan

13 posts

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  #1160014 22-Oct-2014 14:39
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Yes the DrayTek is in full bridge mode and the Linksys has the correct Spark username and password entered in the PPPoE profile.

The linksys showed no error and actually showed a connection to the internet. From the Linksys diagnostics page I am able to ping many websites, even the ones that I can not access through a web browser of a computer connected to the network.

I am using port forwarding for the web server.

Thanks for the help!

 
 
 
 


Mattmannz
470 posts

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  #1160078 22-Oct-2014 15:55
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sounds like it's setup ok.

What dns are you using on the clients?

mdcan

13 posts

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  #1160085 22-Oct-2014 16:01
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I recon the problem lies with DNS. I don't know a heck of a lot about DNS, so you might have to enlighten me.

What I do know is that on the Linksys router, when in PPPoE mode, I have no option to set DNS servers to Spark's default servers. Does that mean that I need to set them on the individual devices on my network individually? This is not ideal.

If I take a look at my network settings now on my computer the DNS address is the ip address of the router. 

hamish225
1323 posts

Uber Geek


  #1160206 22-Oct-2014 18:06
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mdcan: I recon the problem lies with DNS. I don't know a heck of a lot about DNS, so you might have to enlighten me.

What I do know is that on the Linksys router, when in PPPoE mode, I have no option to set DNS servers to Spark's default servers. Does that mean that I need to set them on the individual devices on my network individually? This is not ideal.

If I take a look at my network settings now on my computer the DNS address is the ip address of the router. 


if you set the DNS on just one computer in your network manually to 8.8.8.8 and 8.8.4.4 (or alternitively set it to sparks DNS) can you access all websites or still just some?

can you ping them? try this with default DNS setting and with the google dns i just suggested to spot any differences.


if changing it to google DNS works you might have to see if you can find the default DNS addresses in the DHCP settings on the router and set them to the spark ones so that instead of your routers IP being the DNS server to your clients, they get given the ISP dns. it might be slightly slower because it has to go all the way to spark for DNS requests but if that works then it should be okay.





muttley68
49 posts

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  #1160435 23-Oct-2014 09:15
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I have almost the exact problem as well (WRT1900AC using PPPoE to login to Spark via Vigor 120). I have the Vigor 120 PPPoE passthrough box ticked, and like the OP I get all indications that everything has logged in correctly on the Linksys, but can't browse other than a few local websites.
I setup a PPPoE connection on my PC into the Draytek (so bypassing the Linksys) and the connection works perfectly - I can browse all websites.
I went to Linksys support and in the chat session they mentioned that the Linksys SPI firewall could be blocking access to the websites.
I haven't tried turning off the firewall on the Linksys yet but will give it a try tonight.
What I am concerned about though, is that with the Draytek in passthrough mode does it also disable the Draytek firewall? I'm guessing it does if the passthrough mode makes it act as nothing more than a modem converting PPPoE to PPPoA. In which case, no firewall except for the windows firewall on the PC, which doesn't fill me with the highest confidence...

Edit - to answer one of the questions above - I set DNS to 8.8.8.8 and it made no difference. I could browse to www.google.co.nz and get search results, but clicking on the search results was unable to bring up those web pages.
Linksys also suggested setting DNS to 4.2.2.2 / 4.2.2.3 but it was still the same result as using Google's DNS and Spark's DNS servers, so I'm veering away from the DNS idea as being the problem, especially since you can ping any website and DNS resolves it to the IP address, but you just can't browse to that address - sounds more of a firewall issue, or at least something seems to be blocking web browsing

ubergeeknz
3344 posts

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Vocus

  #1160438 23-Oct-2014 09:20
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muttley68: they mentioned that the Linksys SPI firewall could be blocking access to the websites.
I haven't tried turning off the firewall on the Linksys yet but will give it a try tonight.



I have to say, disabling the firewall sounds like A BAD IDEA (TM)

 
 
 
 


muttley68
49 posts

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  #1160450 23-Oct-2014 09:29
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ubergeeknz:
muttley68: they mentioned that the Linksys SPI firewall could be blocking access to the websites.
I haven't tried turning off the firewall on the Linksys yet but will give it a try tonight.



I have to say, disabling the firewall sounds like A BAD IDEA (TM)


I totally agree, which is why I was hoping the Draytek firewall might still be working when in Bridge/passthrough mode, but I don't know if it does.
Anyway, I would just try it to narrow down if that is what's causing the issue, then switch it back on.
The only way I can get the Linksys working at the moment is to put it in DHCP mode and assign an IP to it from the Draytek (which is not in passthrough mode). This is just double-routing as far as I'm aware and is far from ideal but at least I have internet access.
I don't have the ability to switch to either VDSL or Fibre as neither are in my area....

muttley68
49 posts

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#1160458 23-Oct-2014 09:40
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Oh, and as an added bonus, the Linksys is also suffering from random resets/reboots. Apparently this is a known issue, and is awaiting a fix from Linksys (I'm running latest firmware) . I can't try dd-wrt / openwrt firmware to see if it fixes it, as open source on this router has become a bad joke thanks to the lack of source code for the marvell chipset being available (at least last time I checked).

Edit - apologies to the OP - I'm not trying to hijack the thread, just had to get the above off my chest....embarassed

mdcan

13 posts

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  #1160491 23-Oct-2014 10:08
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Sorry about the delayed reply.

I got a quick chance this morning to put the DrayTek in to PPPoA/PPPoE passthrough and set the linksys up using PPPoE. I can confirm that setting the DNS servers, to Spark's default servers, on my computer did not make any difference and I could still only load a few local websites.

I forgot to try and ping websites that I can't access from a web browser, I will try this later on tonight. What I do know though is that you can ping these websites from the router's web interface successfully.

muttley68
49 posts

Geek


  #1160497 23-Oct-2014 10:16
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mdcan: Sorry about the delayed reply.

I got a quick chance this morning to put the DrayTek in to PPPoA/PPPoE passthrough and set the linksys up using PPPoE. I can confirm that setting the DNS servers, to Spark's default servers, on my computer did not make any difference and I could still only load a few local websites.

I forgot to try and ping websites that I can't access from a web browser, I will try this later on tonight. What I do know though is that you can ping these websites from the router's web interface successfully.


See my first post in this thread - I'm wondering if turning off the Linksys firewall will show if this is wha't causing it. I don't recommend leaving it off, but it's something to start with and might help when going back to Linksys. I'm going to try tonight and will also report back.

zespri
345 posts

Ultimate Geek

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  #1160535 23-Oct-2014 10:43
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A few things come to mind.
- According to WRT1900AC manual you can change dns settings via www.linksyssmartwifi.com That sounds a bit bizarre but not inconceivable. Their remote UI could provide more tweaking capabilities than the routers built-in.
- I have draytek vigor 120 and two tp-link routers tl-wdr4300 and tl-wdr3600 ( I don't use them both at the same time, I'm using the second one for testing custom firmware) they do not have any such problems. It looks to me that the culprit in your case is the Linksys
- What error do you get when you try to ping web sites that do not ping from pc? Is it because DNS can't be resolved or something else? Did you try trace route?

zespri
345 posts

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  #1160543 23-Oct-2014 11:13
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muttley68: Oh, and as an added bonus, the Linksys is also suffering from random resets/reboots. Apparently this is a known issue, and is awaiting a fix from Linksys (I'm running latest firmware) . I can't try dd-wrt / openwrt firmware to see if it fixes it, as open source on this router has become a bad joke thanks to the lack of source code for the marvell chipset being available (at least last time I checked).

Edit - apologies to the OP - I'm not trying to hijack the thread, just had to get the above off my chest....embarassed

OMG! That's so bad! I did not have a previous experience with this particular router, so I googled it and read all these "OpenWrt" ready and so on and was starting to think, may be I should get one, it had decent amount of memory and looks like a good machine.  It's also quite expensive. More than twice as much as my tp-link. And it turns out that the OpenWrt ready bit is a blatant lie! I'm shocked!

Anyway, this is something that people are trying to do: https://github.com/Chadster766/McWRT I believe that in it's current state it is only for the adventurous lot, but would be interesting to see what it develops into.

muttley68
49 posts

Geek


  #1161082 23-Oct-2014 23:05
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Update: I put the Draytek 120 back into PPPoE pass-through mode and changed the Linksys to PPPoE, as well as disabled the IPv4 (and IPv6) firewalls. Absolutely no change to the problem. The Linksys still logs into Spark no problem, I can browse to some local sites (not many) but no overseas sites that I have tried. It's weird in that I can connect to the https ANZ bank site, but not the WWW ANZ bank site. I also tried disabling the Draytek firewall - whether it gets used when in pass-through mode I have no idea but anything was worth a shot.
So I am still stuck with a router that won't work with my setup. And yet there must be countless other PPPoE routers out there working just fine on ADSL via the Draytek 120 - I know I've read enough threads about them to feel confident it would work for me. So Linksys, exactly what's different about the WRT1900AC that you're not telling me??

mdcan

13 posts

Geek


  #1161085 23-Oct-2014 23:07
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I can confirm that everything above has happened to me too. Disabling the firewall on both the Linksys and the DrayTek made no difference at all.

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