在高级网络中，使用一个公共IP创建vpn server。创建完成后，在windows XP中创建一个vpn client连接vpn
server。用户、密码、公共密钥都配置好了，但连接时总“报错：678，远程计算机没反应”。在虚拟路由器中的查看日志：/var/log/auto.log
Dec 19 01:45:01 r-409-VM CRON[17872]: pam_unix(cron:session): session closed
for user root
Dec 19 01:45:14 r-409-VM pluto[28116]: packet from 192.168.0.34:500: ignoring
Vendor ID payload [MS NT5 ISAKMPOAKLEY 00000004]
Dec 19 01:45:14 r-409-VM pluto[28116]: packet from 192.168.0.34:500: ignoring
Vendor ID payload [FRAGMENTATION]
Dec 19 01:45:14 r-409-VM pluto[28116]: packet from 192.168.0.34:500: received
Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n] method set to=106
Dec 19 01:45:14 r-409-VM pluto[28116]: packet from 192.168.0.34:500: ignoring
Vendor ID payload [Vid-Initial-Contact]
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
responding to Main Mode from unknown peer 192.168.0.34
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
transition from state STATE_MAIN_R0 to state STATE_MAIN_R1
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
STATE_MAIN_R1: sent MR1, expecting MI2
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
NAT-Traversal: Result using draft-ietf-ipsec-nat-t-ike-02/03: no NAT detected
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
transition from state STATE_MAIN_R1 to state STATE_MAIN_R2
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
STATE_MAIN_R2: sent MR2, expecting MI3
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33: Main
mode peer ID is ID_IPV4_ADDR: '192.168.0.34'
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
transition from state STATE_MAIN_R2 to state STATE_MAIN_R3
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
STATE_MAIN_R3: sent MR3, ISAKMP SA established {auth=OAKLEY_PRESHARED_KEY
cipher=oakley_3des_cbc_192 prf=oakley_sha group=modp2048}
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33: the
peer proposed: 192.168.0.170/32:17/1701 -> 192.168.0.34/32:17/0
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34:
responding to Quick Mode proposal {msgid:4c4ddaec}
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34: us:
192.168.0.170<192.168.0.170>[+S=C]:17/1701
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34: them:
192.168.0.34[+S=C]:17/1701
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34:
transition from state STATE_QUICK_R0 to state STATE_QUICK_R1
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34:
STATE_QUICK_R1: sent QR1, inbound IPsec SA installed, expecting QI2
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34:
transition from state STATE_QUICK_R1 to state STATE_QUICK_R2
Dec 19 01:45:14 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #34:
STATE_QUICK_R2: IPsec SA established tunnel mode {ESP=>0x477764e3 <0xe4997faf
xfrm=3DES_0-HMAC_MD5 NATOA=none NATD=none DPD=none}
Dec 19 01:45:49 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
received Delete SA(0x477764e3) payload: deleting IPSEC State #34
Dec 19 01:45:49 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
received and ignored informational message
Dec 19 01:45:49 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34 #33:
received Delete SA payload: deleting ISAKMP State #33
Dec 19 01:45:49 r-409-VM pluto[28116]: "L2TP-PSK"[17] 192.168.0.34: deleting
connection "L2TP-PSK" instance with peer 192.168.0.34 {isakmp=#0/ipsec=#0}
Dec 19 01:45:49 r-409-VM pluto[28116]: packet from 192.168.0.34:500: received
and ignored informational message这是什么问题？
