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Topic: How to learn what not so with VPN?

On operation there is router Zyxel Keenetic Ultra with PPTP the server onboard. From the house (Win10) I am periodically picked up, it was more precisely picked up, since the last month rarely is possible to be picked up.
The provider same houses and on operation - Rostelecom, is more precisely bought by Rostelecom.
But if on phone (MTS) to include WiFi an access point, and a computer to connect to it VPN it is installed from the first, i.e. a problem explicitly not in VPN-connection adjustments. And all worked some years without problems.
[spoiler In broad gulls of a router the following (***. ***.49.171 my house IP)]

Nov 06 20:35:38pptpd [627] CTRL: Client ***. ***.49.171 control connection started
Nov 06 20:35:38ndmkernel: Fast VPN ctrl: setup for src ***. ***.49.171
Nov 06 20:35:38pptpd [627] CTRL: Starting call (launching pppd, opening GRE)
Nov 06 20:35:38pptp [628] Plugin pptp.so loaded.
Nov 06 20:35:38pptp [628] PPTP plugin version 0.8.3 compiled against pppd 2.4.4-4
Nov 06 20:35:38pptp [628] pppd 2.4.4-4 started by root, uid 0
Nov 06 20:35:38pptp [628] Using interface vpn0
Nov 06 20:35:38pptp [628] Connect: vpn0 <-> pptp (***. ***.49.171)
Nov 06 20:36:09pptp [628] LCP: timeout sending Config-Requests
Nov 06 20:36:09pptp [628] Connection terminated.
Nov 06 20:36:09ndmkernel: Fast VPN ctrl: release for src ***. ***.49.171
Nov 06 20:36:09pptp [628] Modem hangup
Nov 06 20:36:09pptp [628] Exit.
Nov 06 20:36:09pptpd [627] CTRL: Reaping child PPP [628]
Nov 06 20:36:09pptpd [627] CTRL: Client pppd TERM sending
Nov 06 20:36:09pptpd [627] CTRL: Client pppd finish wait
Nov 06 20:36:09pptpd [627] CTRL: Client ***. ***.49.171 control connection finished 

[/spoiler]
[spoiler In log ]

 11/6/2017 OF 8:34:00 PM
CoID = {1B27E058-BB8C-4F15-9F97-6BBE8839D29D}: the User my_pc\user started to fulfill connection VPN,
Using a connection profile per-user with a name office. Connection parameters:
Dial-in User = ***
VpnStrategy = PPTP
DataEncryption = Requested
PrerequisiteEntry =
AutoLogon = No
UseRasCredentials = Yes
Authentication Type = MS-CHAPv2
Ipv4DefaultGateway = No
Ipv4AddressAssignment = By Server
Ipv4DNSServerAssignment = By Server
Ipv6DefaultGateway = Yes
Ipv6AddressAssignment = By Server
Ipv6DNSServerAssignment = By Server
IpDnsFlags =
IpNBTEnabled = Yes
UseFlags = Private Connection
ConnectOnWinlogon = No.
11/6/2017 OF 8:34:00 PM
CoID = {1B27E058-BB8C-4F15-9F97-6BBE8839D29D}: the User my_pc\user tries to establish connection with the server
Remote access for connection office by means of the following device:
Server address/Phone Number = ***. ***.229.120
Device = WAN Miniport (PPTP)
Port = VPN4-1
MediaType = VPN.
11/6/2017 OF 8:34:00 PM
CoID = {1B27E058-BB8C-4F15-9F97-6BBE8839D29D}: the User my_pc\user successfully established connection with the server
Remote access by means of the following device:
Server address/Phone Number = ***. ***.229.120
Device = WAN Miniport (PPTP)
Port = VPN4-1
MediaType = VPN.
11/6/2017 OF 8:34:00 PM
CoID = {1B27E058-BB8C-4F15-9F97-6BBE8839D29D}: Communication with the remote access server is installed by the user my_pc\user.
11/6/2017 OF 8:34:31 PM
CoID = {1B27E058-BB8C-4F15-9F97-6BBE8839D29D}: the User my_pc\user installed remote connection office,
Which has been stopped. At termination the code of the reason 829 is returned. 

[/spoiler]
Not clearly why "communication is installed" and in 30 seconds a breakaway? As though something is cut with someone. Not the fan of theories of plot but while the version connected to prohibitions VPN which since November, 1st came into force arises only. Truth in the law not nobody cancelled total prohibition VPN, but curve hands.
What here it is possible  and how provider problem to describe?

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Re: How to learn what not so with VPN?

1. To include log.
2. To send to the provider a copy of errors.
3. It is useless, truth. Providers a bast do not knit. Osoblivo Zhopatelekom.

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Re: How to learn what not so with VPN?

Dima T;
The correct way - to address for problem diagnostics in support  , which, by the way, at Zyxel very decent.

4

Re: How to learn what not so with VPN?

Yes, and still;
[quote =] with PPTP

- not the best choice for "on operation".