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µoªí©ó 2008-2-18 23:09:12 | ¥u¬Ý¸Ó§@ªÌ ¦^©«¼úÀy |­Ë§ÇÂsÄý |¾\Ū¼Ò¦¡
±Ð±z¦p¦ó30¤ÀÄÁ¥´³y°ò©óLinuxªºVPN¦øªA¾¹
§@ªÌ¡G¬ö¼W¶¯ µo¤å®É¶¡¡G2005.09.05


VPN(Virtual Private Network¡AµêÀÀ±M¥Îºô¸ô)¬O±M¥Îºô¸ôªº©µ¦ù¡A¥¦¥i¥H³q¹L¦@¥ÎInternet©Î¤½¦@ºô¸ô³s±µÃþ¤ñÂI¹ïÂI±M¥Î³s±µªº¤è¦¡¡A¦b¥»¦a¹q¸£©M»·ºÝ¹q¸£¤§¶¡µo°e¸ê®Æ¡C

¥¦¨ã¦³¨}¦nªº«O±K©Ê©M¤£¨ü¤zÂZ©Ê¡A¨ÏÂù¤è¯à°÷¶i¦æ¦Û¥Ñ¦Ó¦w¥þªºÂI¹ïÂI³s±µ¡C¤U­±¤¶²Ð¤@ºØ§Ö³tºc«ØVPN¦øªA¾¹ªº¤èªk¡C

¦w¸Ë³nÅé

1.¦w¸ËPPP

¦w¸ËPPP¡]Point-to-Point Protocol¡AÂI¨ìÂI¨óij¡^2.4.2¥H¤Wªºª©¥»¡A¥i¥H¨ìhttp: //sourceforge.net/project/showfiles.php?group_id=44827¤U¸üppp-2.4.3- 0.cvs_20040527.1.i386.rpm®M¸Ë³nÅé¡C

¦w¸Ë©R¥O¦p¤U¡G
¥N½X:

#rpm -Uvh ppp-2.4.3-0.cvs_20040527.1.i386.rpm



2.¦w¸Ë¤º®ÖMPPE¸É¤B

¦w¸Ë¤º®ÖMPPE¡]Microsoft Point to Point Encryption¡A·L³nÂI¹ïÂI¥[±K¡^¸É¤B»Ý­n®Ú¾Ú¤º®Ö¿ï¾Ü¬ÛÀ³ªºª©¥»¡Cµ§ªÌ¨Ï¥ÎªºLinux¤º®Ö¬O2.4.20-31.9ª©¥»¡A¥i¥H¨ìhttp: //pptpclient.sourceforge.net/mppe/kernel-mppe-2.4.20-31.9.i686.rpm¤U¸ü¬ÛÀ³ªº kernel-mppe-2.4.20-31.9.i686.rpm®M¸Ë³nÅé¡C¦w¸Ë©R¥O¦p¤U¡G
¥N½X:


#rpm -ivh kernel-mppe-2.4.20-31.9.i686.rpm



¥Î¥H¤U©R¥OÀˬd¤º®ÖMPPE¸É¤B¬O§_¦w¸Ë¦¨¥\¡G
¥N½X:


#modprobe ppp-compress-18


3.ÀˬdPPP¬O§_¤ä´©MPPE

¥Î¥H¤U©R¥OÀˬdPPP¬O§_¤ä«ùMPPE¡G
¥N½X:


#strings '/usr/sbin/pppd' |grep -i mppe | wc --lines



¦pªG¥H¤W©R¥O¿é¥X¬°¡§0¡¨«hªí¥Ü¤£¤ä«ù¡F¿é¥X¬°¡§30¡¨©Î§ó¤jªº¼Æ¦r´Nªí¥Ü¤ä´©¡C

4.¦w¸ËPPTPD

¨ìhttp://sourceforge.net/project/showfiles.php?group_id=44827¤U¸üpptpd-1.1.4-b4.i386.rpm®M¸Ë³nÅé¡A¨Ã¦w¸Ë¡C
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# rpm -ivh pptpd-1.1.4-b4.i386.rpm



­×§ï°t¸mÀÉ

1.­×§ïmodules.conf¤å¥ó

½s¿è/etc/modules.conf°t¸mÀÉ¡A¥[¤J¦p¤U¤º®e¡G
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alias net-pf-47 ip_gre


2.­×§ïpptpd.conf¤å¥ó

½s¿è/etc/pptpd.conf°t¸mÀÉ¡A²K¥[¦p¤U¤º®e¡A½T©w¥»¦aVPN¦øªA¾¹ªºIP¦a§}©M¥Î¤áºÝµn¿ý«á¤À°tªºIP¦a§}½d³ò¡C
¥N½X:


debug
option /etc/ppp/options.pptpd
localip 192.168.0.254 #¥»¦aVPN¦øªA¾¹ªºIP
remoteip 192.168.1.1-254  #¥Î¤áºÝ³Q¤À°tªºIP½d³ò



3.­×§ïoptions.pptpd¤å¥ó

½s¿è/etc/ppp/options.pptpd°t¸mÀÉ¡A´À´«¦¨¦p¤U¤º®e¡G
¥N½X:


auth
lock
debug
proxyarp
lock
name rh9vpn #VPN¦øªA¾¹ªº¦W¦r
multilink
refuse-pap
refuse-chap
refuse-mschap
refuse-eap
refuse-mschap-v2
require-mppe
ms-wins 192.168.1.2 #§â·Q­n¦bºô¸ô¾F©~¤¤¬Ý¨ìªº¾÷¾¹ªºIP¶ñ¼g¨ì³oùØ
ms-dns 192.168.1.2 #DNS¦øªA¾¹¦a�}   
dump   
logfile /var/log/pptpd.log  #¤é»x¦s©ñªº¸ô®|



4.­×§ïchap-secretsÀÉ

½s¿è/etc/chap-secrets°t¸mÀÉ¡A²K¥[¦p¤U¤º®e¡G
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# client server secret IP addresses
"test@gd.cn" *  "test"       *



¤W­±²Ä¤G¦æ¥N½Xªº¥|¶µ¤º®e¤À§O¹ïÀ³²Ä¤@¦æ¤¤ªº¥|¶µ¡C¡§test@gd.cn¡¨¬OClientºÝªºVPN¥Î¤á¦W¡F¡§server¡¨¹ïÀ³ªº¬OVPN¦øªA¾¹ªº¦W¦r¡A¸Ó¦W¦r¥²¶·©M/etc/ppp/options.pptpdÀɤ¤«ü©úªº¤@¼Ë¡A©ÎªÌ³]¸m¦¨¡§*¡¨¸¹¨Óªí¥Ü¦Û°ÊÃѧO¦øªA¾¹¡F¡§secret¡¨¹ïÀ³ªº¬Oµn¿ý±K½X¡F¡§IP addresses¡¨¹ïÀ³ªº¬O¥i¥H¼·¤Jªº¥Î¤áºÝIP¦ì§}¡A¦pªG¤£»Ý­n°µ¯S§O­­¨î¡A¥i¥H±N¨ä³]¸m¬°¡§*¡¨¸¹¡C

5.³]¸mIP°°¸ËÂàµo

¥u¦³³]¸m¤FIP°°¸ËÂàµo¡A³q¹LVPN³s±µ¤W¨Óªº»·ºÝ¹q¸£¤~¯à¤¬¬Ûping³q¡A¹ê²{¹³§½°ìºô¨º¼Ëªº¦@¥Î¡C¥Î¤U­±ªº©R¥O¶i¦æ³]¸m¡G
¥N½X:


#echo 1 > /proc/sys/net/ipv4/ip_forward



¥i¥H±N³o±ø©R¥O©ñ¨ìÀÉ/etc/rc.d/rc.localùØ­±¡A¥H¹ê²{¨C¦¸¶}¾÷®É¦Û°Ê¹B¦æ¸Ó©R¥O¡C



6.¥´¶}¨¾¤õÀð°ð



±NLinux¦øªA¾¹ªº1723°ð©M47°ð¥´¶}¡A¨Ã¥´¶}GRE¨óij¡C

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#/sbin/iptables -A INPUT -p tcp --dport 1723 -j ACCEPT
#/sbin/iptables -A INPUT -p tcp --dport 47 -j ACCEPT
#/sbin/iptables -A INPUT -p gre -j ACCEPT



¨ì³oùØLinux¦øªA¾¹ªº³]¸m´N§¹¦¨¤F¡A¤U­±±N§Q¥ÎWindows¥Î¤áºÝ¶i¦æ´ú¸Õ¡C

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¤U­±¥HWindows Server 2003¬°¨Ò¨Ó¶i¦æ´ú¸Õ¡C

1.·s«Ø³s±µ

³æÀ»¡§¶}©l¡÷³]¸m¡÷ºô¸ô©M¼·¸¹³s±µ¡¨¥´¶}¡§ºô¸ô©M¼·¸¹³s±µ¡¨ªºµøµ¡¡A¦A³æÀ»¡§·s«Ø³s±µ¡¨¥´¶}¡§ºô¸ô³s±µÂQ¾É¡¨ªºµøµ¡¡AµM«á¨Ì¦¸¿ï¾Ü©Î¶ñ¼g¡§³s±µ¨ì§Úªº¤u§@³õ©Òºô¸ô¡÷µêÀÀ±M¥Îºô¸ô³s±µ¡÷¤½¥q¦W¡]¥i¥HÀH«K¶ñ¼g¡^¡÷¤£¼·ªì©l³s±µ¡÷IP¦ì§}¡]¶ñ¤JVPN¦øªA¾¹ªºIP¦ì§}¡^¡¨¡A³Ì«á³æÀ»¡§½T©w¡¨¡A´N«Ø¥ß¤F¤@­Ó·sªº³s±µ¡C

2. ­×§ï³s±µÄÝ©Ê

¥kÀ»­è¤~³Ð«Øªº³s±µ¡A¦A¨Ì¦¸³æÀ»¡§Äݩʡ÷ºô¸ô¡]¿ï¾ÜTCP/IP¨ó©w¡^¡÷Äݩʡ÷°ª¯Å¡¨¡AµM«á§â¡§¦b»·ºÝºô¸ô¤W¨Ï¥ÎÀq»{¹h¹D¡¨«e­±ªº¤Ä¥h±¼«á³æÀ»¡§½T©w¡¨¡C

3.«Ø¥ß³s±µ

ÂùÀ»­è¤~«Ø¥ß¦nªº³s±µ¡A¶ñ¤J´£«e³]¸m¦nªº¥Î¤á¦W©M±K½X¡A³æÀ»¡§½T©w¡¨¶i¦æ³s±µ¡C¦pªG³s±µ¦¨¥\¡A¦b³s±µªº¡§¸Ô²Ó¸ê°T¡¨ùØÀ³¸Ó¥i¥H¬Ý¨ì¦øªA¾¹©Ò¤À°tªºIP¦ì§}µ¥¸ê°T¡C³o®É¡A´N¥i¥H¸ò³s±µ¶i¤Jªº§½°ìºôùتº¨ä¥L¹q¸£¶i¦æ³q«H¤F¡C

¦pªG¥Î¤áºÝ¨Ï¥Îªº¤´µM¬OWindows 95©ÎWindows 98¡A«h»Ý­n¨ìhttp://support.microsoft.com/support/kb/articles/q285/1/89.asp
¤U¸ü¬ÛÃöªº¼·¸¹µ{¦¡¡C
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