PPTPD, PPP 전송 시 압축 적용 및 끊김 방지 방법에 대해 알고 싶습니다.
우선... 기본적인 통신은 잘 되고 있습니다.
pptpd+pppd를 이용하여 VPN망을 구축 했고요.
근대 여기서 압축 기능을 사용 하면 좋을 것 같은데 그게 마음데로 안 됩니다.
/etc/ppp/options.pptpd에 bsdcomp와 deflate옵션 등을 주어 조정을 해 보았으나 압축은 적용이 안 되더군요.
압축은 적용이 안 되지만 일단 접속은 되고 파일 주고 받기 및 서버쪽 네트워크로의 접속은 정상적입니다.
Local IP Address를 192.168.3.254로 지정 하엿고
Remote IP Address를 192.168.3.1-16으로 지정 하였씁니다.(그렇게 많은 접속을 동시에 받을 필요가 없기 때문이고 접속용 ID발급도 아마 16개를 넘기지도 못 할 것이비다.)
여기서 문제가 발생하는데, 실제로 클라이언트 족에서 보기에 연결이 끊어 진 것은 아니지만 사실상 패킷이 전송 되지 않는 등의 문제가 발생합니다. 당장 그렇게 되는 것은 아니고 장시간 사용시 그런 일이 발생합니다.
VPN을 통해 서버에 잇는 SMB를 통하여 파일을 넣고 또는 배 오고 하는데... 용량이 많아 지면 이게 중간에 가다가 멈춥니다. 그래서 보면 연결이 끊어 진 것은 아닌 것으로 표시가 되지만, 사실상 끊어 진 거나 마찬가지로 동작합니다.
처음엔 192.168.3.254로 핑을 날리면 잘 갑니다. 그러다가 그 상태가 되면 절때로 안 갑니다. 그렇게 되면 끊었다가 다시 연결 하는 수 박에 없죠.
간단히 설정 파일 두 개를 올리겠습니다.
-- pptpd.conf --
############################################################################### # $Id: pptpd.conf,v 1.10 2006/09/04 23:30:57 quozl Exp $ # # Sample Poptop configuration file /etc/pptpd.conf # # Changes are effective when pptpd is restarted. ############################################################################### # TAG: ppp # Path to the pppd program, default '/usr/sbin/pppd' on Linux # ppp /usr/sbin/pppd # TAG: option # Specifies the location of the PPP options file. # By default PPP looks in '/etc/ppp/options' # option /etc/ppp/options.pptpd # TAG: debug # Turns on (more) debugging to syslog # #debug # TAG: stimeout # Specifies timeout (in seconds) on starting ctrl connection # # stimeout 10 # TAG: noipparam # Suppress the passing of the client's IP address to PPP, which is # done by default otherwise. # #noipparam # TAG: logwtmp # Use wtmp(5) to record client connections and disconnections. # logwtmp # TAG: bcrelay <if> # Turns on broadcast relay to clients from interface <if> # #bcrelay eth1 # TAG: delegate # Delegates the allocation of client IP addresses to pppd. # # Without this option, which is the default, pptpd manages the list of # IP addresses for clients and passes the next free address to pppd. # With this option, pptpd does not pass an address, and so pppd may use # radius or chap-secrets to allocate an address. # #delegate # TAG: connections # Limits the number of client connections that may be accepted. # # If pptpd is allocating IP addresses (e.g. delegate is not # used) then the number of connections is also limited by the # remoteip option. The default is 100. connections 16 # TAG: localip # TAG: remoteip # Specifies the local and remote IP address ranges. # # These options are ignored if delegate option is set. # # Any addresses work as long as the local machine takes care of the # routing. But if you want to use MS-Windows networking, you should # use IP addresses out of the LAN address space and use the proxyarp # option in the pppd options file, or run bcrelay. # # You can specify single IP addresses seperated by commas or you can # specify ranges, or both. For example: # # 192.168.0.234,192.168.0.245-249,192.168.0.254 # # IMPORTANT RESTRICTIONS: # # 1. No spaces are permitted between commas or within addresses. # # 2. If you give more IP addresses than the value of connections, # it will start at the beginning of the list and go until it # gets connections IPs. Others will be ignored. # # 3. No shortcuts in ranges! ie. 234-8 does not mean 234 to 238, # you must type 234-238 if you mean this. # # 4. If you give a single localIP, that's ok - all local IPs will # be set to the given one. You MUST still give at least one remote # IP for each simultaneous client. # # (Recommended) localip 192.168.3.254 remoteip 192.168.3.1-16 # or #localip 192.168.0.234-238,192.168.0.245 #remoteip 192.168.1.234-238,192.168.1.245
-- options.pptpd --
###############################################################################
# $Id: options.pptpd,v 1.11 2005/12/29 01:21:09 quozl Exp $
#
# Sample Poptop PPP options file /etc/ppp/options.pptpd
# Options used by PPP when a connection arrives from a client.
# This file is pointed to by /etc/pptpd.conf option keyword.
# Changes are effective on the next connection. See "man pppd".
#
# You are expected to change this file to suit your system. As
# packaged, it requires PPP 2.4.2 and the kernel MPPE module.
###############################################################################
# Authentication
# Name of the local system for authentication purposes
# (must match the second field in /etc/ppp/chap-secrets entries)
name pptpd
# Strip the domain prefix from the username before authentication.
# (applies if you use pppd with chapms-strip-domain patch)
#chapms-strip-domain
# Encryption
# (There have been multiple versions of PPP with encryption support,
# choose with of the following sections you will use.)
# BSD licensed ppp-2.4.2 upstream with MPPE only, kernel module ppp_mppe.o
# {{{
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
# }}}
# OpenSSL licensed ppp-2.4.1 fork with MPPE only, kernel module mppe.o
# {{{
#-chap
#-chapms
# Require the peer to authenticate itself using MS-CHAPv2 [Microsoft
# Challenge Handshake Authentication Protocol, Version 2] authentication.
#+chapms-v2
# Require MPPE encryption
# (note that MPPE requires the use of MSCHAP-V2 during authentication)
#mppe-40 # enable either 40-bit or 128-bit, not both
#mppe-128
#mppe-stateless
# }}}
# Network and Routing
# If pppd is acting as a server for Microsoft Windows clients, this
# option allows pppd to supply one or two DNS (Domain Name Server)
# addresses to the clients. The first instance of this option
# specifies the primary DNS address; the second instance (if given)
# specifies the secondary DNS address.
ms-dns 192.168.3.254
ms-dns 168.126.63.1
# If pppd is acting as a server for Microsoft Windows or "Samba"
# clients, this option allows pppd to supply one or two WINS (Windows
# Internet Name Services) server addresses to the clients. The first
# instance of this option specifies the primary WINS address; the
# second instance (if given) specifies the secondary WINS address.
ms-wins 192.168.3.254
#ms-wins 10.0.0.4
# Add an entry to this system's ARP [Address Resolution Protocol]
# table with the IP address of the peer and the Ethernet address of this
# system. This will have the effect of making the peer appear to other
# systems to be on the local ethernet.
# (you do not need this if your PPTP server is responsible for routing
# packets to the clients -- James Cameron)
proxyarp
# Normally pptpd passes the IP address to pppd, but if pptpd has been
# given the delegate option in pptpd.conf or the --delegate command line
# option, then pppd will use chap-secrets or radius to allocate the
# client IP address. The default local IP address used at the server
# end is often the same as the address of the server. To override this,
# specify the local IP address here.
# (you must not use this unless you have used the delegate option)
#10.8.0.100
# Logging
# Enable connection debugging facilities.
# (see your syslog configuration for where pppd sends to)
#debug
# Print out all the option values which have been set.
# (often requested by mailing list to verify options)
#dump
# Miscellaneous
# Create a UUCP-style lock file for the pseudo-tty to ensure exclusive
# access.
lock
# Disable BSD-Compress compression
#nobsdcomp
# Disable Van Jacobson compression
# (needed on some networks with Windows 9x/ME/XP clients, see posting to
# poptop-server on 14th April 2005 by Pawel Pokrywka and followups,
# <a href="http://marc.theaimsgroup.com/?t=111343175400006&r=1&w=2" rel="nofollow">http://marc.theaimsgroup.com/?t=111343175400006&r=1&w=2</a> )
#novj
#novjccomp
# turn off logging to stderr, since this may be redirected to pptpd,
# which may trigger a loopback
nologfd
# put plugins here
# (putting them higher up may cause them to sent messages to the pty)
deflate 12,12
#bsdcomp 8OS는 Gentoo Linux입니다.
애휴.. 어렵군요.


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