Can't VPN to asus rt-n66r using iphone.

[mattnin]

My router is an RT-N66R. I'm using firmware 374.43. I don't know what I'm doing wrong and why I can't VPN using my cellular network. I can connect to my VPN when I'm on wifi and at home on the same network as the router that I want to connect to. Here are my logs from the router,

==============================================================

Mar 23 15:48:27 pptpd[1152]: CTRL: Client xx.xx.150.30 control connection started
Mar 23 15:48:27 pptpd[1152]: CTRL: Starting call (launching pppd, opening GRE)
Mar 23 15:48:27 pptp[1153]: Plugin pptp.so loaded.
Mar 23 15:48:27 pptp[1153]: PPTP plugin version 0.8.5 compiled for pppd-2.4.5, linux-2.6.22.19
Mar 23 15:48:27 pptp[1153]: pppd 2.4.5 started by admin, uid 0
Mar 23 15:48:27 pptp[1153]: Using interface ppp10
Mar 23 15:48:27 pptp[1153]: Connect: ppp10 <--> pptp (xx.xx.150.30)
Mar 23 15:48:57 pptp[1153]: LCP: timeout sending Config-Requests
Mar 23 15:48:57 pptp[1153]: Connection terminated.
Mar 23 15:48:57 pptp[1153]: Modem hangup
Mar 23 15:48:57 pptp[1153]: Exit.
Mar 23 15:48:57 pptpd[1152]: CTRL: Client pppd TERM sending
Mar 23 15:48:57 pptpd[1152]: CTRL: Client pppd finish wait
Mar 23 15:48:58 pptpd[1152]: CTRL: EOF or bad error reading ctrl packet length.
Mar 23 15:48:58 pptpd[1152]: CTRL: couldn't read packet header (exit)
Mar 23 15:48:58 pptpd[1152]: CTRL: Fatal error reading control message in disconnect sequence
Mar 23 15:48:58 pptpd[1152]: CTRL: Client xx.xx.150.30 control connection finished

==============================================================

Please help. I've set up my VPN in the past, and for the most part it's pretty much straight forward. But I'm having a hard time figuring this one out. I called my ISP and they say they aren't blocking any ports. I didn't call my phone company to see if VPN is blocked. I've tried connecting using a DDNS address, using the actual IP address of my modem, I'm at a loss. Please help someone

*I edited out my ip address using xx.xx for privacy*

 

[mattnin]

Can anyone help? If I'm leaving any information out, I'll be glad to provide it.

 

[Sentra122]

I'm having the exact same problem with my RT-AC87 on 380.57 and my iPhone. I can connect fine within the network on WiFi, but no luck on cellular reception. I've tried multiple different settings on the PPTP panel, but still no luck.

Anyone have any suggestions? I can't seem to make heads or tails of the issue...

Dec 26 18:36:41 pptpd[27584]: CTRL: Client X.X.X.X control connection started
Dec 26 18:36:41 pptpd[27584]: CTRL: Starting call (launching pppd, opening GRE)
Dec 26 18:36:41 pptp[27585]: Plugin pptp.so loaded.
Dec 26 18:36:41 pptp[27585]: PPTP plugin version 0.8.5 compiled for pppd-2.4.7, linux-2.6.36.4
Dec 26 18:36:41 pptp[27585]: pppd 2.4.7 started by X, uid 0
Dec 26 18:36:41 pptp[27585]: Using interface ppp10
Dec 26 18:36:41 pptp[27585]: Connect: ppp10 <--> pptp (X.X.X.X)
Dec 26 18:37:11 pptp[27585]: LCP: timeout sending Config-Requests
Dec 26 18:37:11 pptp[27585]: Connection terminated.
Dec 26 18:37:11 pptpd[27584]: CTRL: EOF or bad error reading ctrl packet length.
Dec 26 18:37:11 pptpd[27584]: CTRL: couldn't read packet header (exit)
Dec 26 18:37:11 pptpd[27584]: CTRL: CTRL read failed
Dec 26 18:37:11 pptpd[27584]: CTRL: Client pppd TERM sending
Dec 26 18:37:11 pptpd[27584]: CTRL: Client pppd finish wait
Dec 26 18:37:11 pptp[27585]: Terminating on signal 15
Dec 26 18:37:11 pptp[27585]: Modem hangup
Dec 26 18:37:11 pptp[27585]: Exit.
Dec 26 18:37:11 pptpd[27584]: CTRL: Client X.X.X.X control connection finished​

 

[nihon]

Had the same issue. I contacted my phone service provider that then made sure to give me a public IP over 3G/4G (free of charge) and since then it works fine.

Skickat från min SM-G920F via Tapatalk

 

[unsynaps]

Might need some more info to figure it out.

I have a iPhone 6+ running iOS 9.2.
ASUS RT-AC87R running 380.57. PPTP VPN.
US AT@T

Something to look at: http://pptpclient.sourceforge.net/howto-diagnosis.phtml#lcp_timeout
What is your authentication on the router? iOS might only work with MS-CHAPv2. That is what it is set to on my router.

 

[mattnin]

I know I'm necro'ing this post but figure I'd follow up in case this post is searched. It turns out my cell phone provider blocked VPN! I had to pay an extra two dollars a month to get VPN unlocked. After that, it worked like a charm except for the fact that VPN is very slow on the underpowered router! Be sure that your service provider allows VPN!

 

[Zirescu]

Ouch...talk about being nickel and dimed.