Linux PPTPD limit single account session limit and login log (improved version)

Original http://www.cnblogs.com/niusys/p/4204360.html

Original one of the shortages has already been spat.

The result of this single-user implementation is that two people kicked to kick the ~~

The second is not clean after disconnection pptpd-users the following users ,

may cause users to log on after they Kill Drop the original PID,

if the PID already assigned to other processes. , the innocent process will be turned off.

improved the above two issues , and add the login log function to the Internet .

Vi/etc/ppp/auth-up

#!/bin/sh  # get the username/ppp line number from the  parameters    realdevice=$1    user=$2# create the  directory to keep pid files per user    test -d / var/run/pptpd-users |mkdir -p /var/run/pptpd-usersrestrict_mode=2#  mode 1  :#  if there is a session already for this user,  Terminate the old one#  mode 2 :#   prevent a new   login for same user    if [ -f /var/run/ pptpd-users/$USER  ]; then        case  $restrict _mode  IN             1)  kill -HUP   ' cat /var/run/pptpd-users/$USER ';;             2)  kill -HUP  ' cat  /var/run/$REALDEVICE. PID '  ;;             *)  : ;;         esac    fi

v I /etc/ppp/ip-up.local

#!/bin/sh# copy  the pid file of current user to /var/run/ pptpd-users  cp  "/var/run/$1.pid"   /var/run/pptpd-users/$PEERNAME  echo    "##################################"  >> /var/log/pptpd.logecho   "Now user   $PEERNAME  is connected!!! "  >> /var/log/pptpd.logecho   "##################################"  >>  /var/log/pptpd.logecho   "time:  ' date -d today +%f_%t '"  >> /var/ log/pptpd.logecho   "clientip: $6"  >> /var/log/pptpd.logecho   " username:  $PEERNAME " >> /var/log/pptpd.logecho  " device: $1 " >>  /var/log/pptpd.logecho   "Vpnip: $4"  >> /var/log/pptpd.logecho   "Assignip: $5"  >> /var/log/pptpd.log

Vi/etc/ppp/ip-down.local

#!/bin/shecho   "#####################################"  >> /var/log/pptpd.logecho    "now user  $PEERNAME  is disconnected!!!"  >> /var/log/pptpd.logecho   "#####################################"  >>  /var/log/pptpd.logecho   "time:  ' date -d today +%f_%t '"  >>  /var/log/pptpd.logecho   "clientip: $6"  >> /var/log/pptpd.logecho   " username:  $PEERNAME " >> /var/log/pptpd.logecho  " device: $1 " >>  /var/log/pptpd.logecho   "Vpnip: $4"  >> /var/log/pptpd.logecho   "Assignip: $5"  >> /var/log/pptpd.logecho   "connect time:  $CONNECT _ Time s " >> /var/log/pptpd.logecho  " bytes sent:  $BYTES _sent b "  >> /var/log/pptpd.logecho   "Bytes rcvd:  $BYTES _rcvd b " >> /var/log/pptpd.logsum_bytes=$ (($BYTES _sent+ $BYTES _RCVD)) sum= ' echo   ' scale=2; $sum _bytes/1024/1024 "|bc ' echo  " bytes sum:  $sum  mb "  >> /var/log/pptpd.logave= ' echo   ' scale=2, $sum _bytes/1024/$CONNECT _time "|BC ' echo    "average speed:  $ave  kb/s"  >> /var/log/pptpd.log rm -f   /var/run/pptpd-users/$PEERNAME

chmoda+x/etc/ppp/*

The process is as follows:

1. User login to determine if there is a/var/run/pptpd-users/user name file

2. If there is a smooth restart of this VPN user process, if the file is not created, the text contains the user process ID

3. ( selectable mode 1 or mode 2)

Mode 1 The old connection was kicked off , A new connection can be used

Mode 2 Log In First Session Stay Online , block logon after

Linux PPTPD limit single account session limit and login log (improved version)