Система CentOS 6.5
ppp-2.4.5
pptpd-1.4.0

Периодически отваливается VPN соединение у Windows клиентов, особенно в момент закачки.

messages

Dec 24 04:25:09 gate pptpd[2882]: MGR: Manager process started
Dec 24 04:25:09 gate pptpd[2882]: MGR: Maximum of 6 connections available
Dec 24 04:25:15 gate pptpd[2884]: CTRL: Client 10.95.213.22 control connection started
Dec 24 04:25:15 gate pptpd[2884]: CTRL: Starting call (launching pppd, opening GRE)
Dec 24 04:25:15 gate pppd[2885]: Plugin /usr/lib/pptpd/pptpd-logwtmp.so loaded.
Dec 24 04:25:15 gate pppd[2885]: pppd 2.4.5 started by root, uid 0
Dec 24 04:25:15 gate pppd[2885]: Using interface ppp0
Dec 24 04:25:15 gate pppd[2885]: Connect: ppp0 <--> /dev/pts/3
Dec 24 04:25:18 gate pppd[2885]: Warning - secret file /etc/ppp/chap-secrets has world and/or group acc
ess
Dec 24 04:25:18 gate pppd[2885]: peer from calling number 10.95.213.22 authorized
Dec 24 04:25:18 gate pppd[2885]: MPPE 128-bit stateless compression enabled
Dec 24 04:25:19 gate pppd[2885]: Cannot determine ethernet address for proxy ARP
Dec 24 04:25:19 gate pppd[2885]: local  IP address 192.168.0.1
Dec 24 04:25:19 gate pppd[2885]: remote IP address 192.168.0.3
Dec 24 04:25:38 gate pptpd[2884]: GRE: read(fd=8,buffer=80515c0,len=8260) from network failed: status =
-1 error = Protocol not available
Dec 24 04:25:38 gate pptpd[2884]: CTRL: GRE read or PTY write failed (gre,pty)=(8,6)
Dec 24 04:25:38 gate pppd[2885]: Modem hangup
Dec 24 04:25:38 gate pppd[2885]: Connect time 0.4 minutes.
Dec 24 04:25:38 gate pppd[2885]: Sent 18132447 bytes, received 357647 bytes.
Dec 24 04:25:38 gate pppd[2885]: MPPE disabled
Dec 24 04:25:38 gate pppd[2885]: Connection terminated.
Dec 24 04:25:38 gate pppd[2885]: Exit.
Dec 24 04:25:38 gate pptpd[2884]: CTRL: Client 10.95.213.22 control connection finished

options.pptpd
name pptpd
refuse-pap
refuse-chap
refuse-mschap
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
require-mschap-v2
# Require MPPE 128-bit encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
require-mppe-128
ms-dns 8.8.8.8
proxyarp
lock

nobsdcomp

novj
novjccomp

mtu 1200
mru 1200