New router leading to server sync issues.

Zandarck · 01-22-2019, 06:14 AM

Hi, I don't know if this the the correct place to post but I was wondering if anyone could help me.

I have recently installed a new modem to get away from using my IPS's router, my original set-up was using the ISP router as a "modem" (I had to double NAT) to my own router, my Kobo and Android app had no issues syncing with the servers with this set-up but now that I have change out the ISP router to my own modem my Kobo can no longer sync with the servers.

The desktop app (PC is wired into the router) allows me to sync and browse the store but the Android app and my Kobo will not allow me to sync or browse the store and I was wondering if anyone had any ideas. I have also tried the Kobo app via BlueStacks and that syncs correctly too, it just appears to be on my wireless network.

Any help is much appreciated.

Kind regards

Zandarck

davidfor · 01-22-2019, 07:18 AM

The first question is, does the ereader connect? And can the browser reach the internet?
If it does not connect at all, then the problem is probably that it cannot reach www.kobo.com. The device fetches a page from there to check if it can connect and if you are using a hotspot. If it fails, the it disconnects from WiFi. If the device cannot see that, then something is blocking it.

Can the Android device running the app reach the internet? If not, you have something else going on in the router.

Zandarck · 01-22-2019, 11:27 AM

Yes both my Kobo and my phone connect to the internet and I am able to browse everything using the Kobo browser including the Kobo website. I can even search the Kobo store from my e-reader but it just won't sync.

I figured it might be something router related but I can't figure out what. Sadly Netgear don't allow you to tinker with the firewall, but then again the PC and BlueStacks can access their respected stores due to being wired...

ReaLx3m · 01-22-2019, 01:33 PM

Quote:

Originally Posted by Zandarck

Yes both my Kobo and my phone connect to the internet and I am able to browse everything using the Kobo browser including the Kobo website. I can even search the Kobo store from my e-reader but it just won't sync.

I figured it might be something router related but I can't figure out what. Sadly Netgear don't allow you to tinker with the firewall, but then again the PC and BlueStacks can access their respected stores due to being wired...

Might be port issue, maybe @davidfor can provide info what ports does kobo sync use and then you forward those to your ereader ip.

davidfor · 01-22-2019, 10:18 PM

Quote:

Originally Posted by ReaLx3m

Might be port issue, maybe @davidfor can provide info what ports does kobo sync use and then you forward those to your ereader ip.

Sync is just over standard HTTPS. So, port 443. I don't know if there is any plain HTTP still happening. A lot of the URLs are listed in the "OneStoraServices" section of the config file. The firmware check URL isn't there, but it is https://api.kobobooks.com. But, the firmware file will actually come from an Akamai server. As will cover images, and I think, the actual books.

ReaLx3m · 01-22-2019, 10:42 PM

@zandarck since its https it could also be a certificate issue, check if your date is setup correctly, since i seen dates outside of cert validity give problems on many devices. Might work for you

Sent from my Nexus 4 using Tapatalk

Zandarck · 01-27-2019, 05:05 AM

Hi all!

Just wanted to say thanks for the suggestion, after a few days of searching and testing I managed to find the issue! I lowered my MTU to its optimal setting (1400 in my case...) and this solved the issue. Turns out the MTU was also screwing with a bunch of other services when I was on WiFi.

Thanks again!

ReaLx3m · 01-27-2019, 01:53 PM

Quote:

Originally Posted by Zandarck

Hi all!

Just wanted to say thanks for the suggestion, after a few days of searching and testing I managed to find the issue! I lowered my MTU to its optimal setting (1400 in my case...) and this solved the issue. Turns out the MTU was also screwing with a bunch of other services when I was on WiFi.

Thanks again!

Glad you figured it out. And thanks for sharing your solution, might come in handy in the arsenal of solutions

01-22-2019, 06:14 AM	#1
Zandarck Junior Member Posts: 3 Karma: 10 Join Date: Aug 2018 Device: Kobo Aura One	New router leading to server sync issues. Hi, I don't know if this the the correct place to post but I was wondering if anyone could help me. I have recently installed a new modem to get away from using my IPS's router, my original set-up was using the ISP router as a "modem" (I had to double NAT) to my own router, my Kobo and Android app had no issues syncing with the servers with this set-up but now that I have change out the ISP router to my own modem my Kobo can no longer sync with the servers. The desktop app (PC is wired into the router) allows me to sync and browse the store but the Android app and my Kobo will not allow me to sync or browse the store and I was wondering if anyone had any ideas. I have also tried the Kobo app via BlueStacks and that syncs correctly too, it just appears to be on my wireless network. Any help is much appreciated. Kind regards Zandarck

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01-22-2019, 07:18 AM	#2
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	The first question is, does the ereader connect? And can the browser reach the internet? If it does not connect at all, then the problem is probably that it cannot reach www.kobo.com. The device fetches a page from there to check if it can connect and if you are using a hotspot. If it fails, the it disconnects from WiFi. If the device cannot see that, then something is blocking it. Can the Android device running the app reach the internet? If not, you have something else going on in the router.

01-22-2019, 11:27 AM	#3
Zandarck Junior Member Posts: 3 Karma: 10 Join Date: Aug 2018 Device: Kobo Aura One	Yes both my Kobo and my phone connect to the internet and I am able to browse everything using the Kobo browser including the Kobo website. I can even search the Kobo store from my e-reader but it just won't sync. I figured it might be something router related but I can't figure out what. Sadly Netgear don't allow you to tinker with the firewall, but then again the PC and BlueStacks can access their respected stores due to being wired...

01-22-2019, 10:42 PM	#6
ReaLx3m Groupie Posts: 154 Karma: 32060 Join Date: Aug 2017 Device: Kobo Aura H2O, Kobo Aura One, Pocketbook Inkpad 3 Pro	@zandarck since its https it could also be a certificate issue, check if your date is setup correctly, since i seen dates outside of cert validity give problems on many devices. Might work for you Sent from my Nexus 4 using Tapatalk

01-27-2019, 05:05 AM	#7
Zandarck Junior Member Posts: 3 Karma: 10 Join Date: Aug 2018 Device: Kobo Aura One	Hi all! Just wanted to say thanks for the suggestion, after a few days of searching and testing I managed to find the issue! I lowered my MTU to its optimal setting (1400 in my case...) and this solved the issue. Turns out the MTU was also screwing with a bunch of other services when I was on WiFi. Thanks again!

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