我正在尝试在我们的 ASA5520 上设置 L2TP/IPSec，以支持我们的一位开发人员的极端情况。当您使用内置 vpn 子系统时，Windows VPN 子系统显然会存储用于登录的 kerberos 或 NTLM cookie，而 Cisco VPN 客户端和 AnyConnect 客户端不会这样做。
当我尝试通过 Windows 7 连接到 VPN 时，连接失败：
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713119: Group = DefaultRAGroup, IP = 1.2.3.4, PHASE 1 COMPLETED
%ASA-3-713122: IP = 1.2.3.4, Keep-alives configured on but peer does not support keep-alives (type = None)
%ASA-5-713257: Phase 2 failure: Mismatched attribute types for class Encapsulation Mode: Rcv'd: UDP Transport Cfg'd: UDP Tunnel(NAT-T)
%ASA-5-713904: Group = DefaultRAGroup, IP = 1.2.3.4, All IPSec SA proposals found unacceptable!
%ASA-3-713902: Group = DefaultRAGroup, IP = 1.2.3.4, QM FSM error (P2 struct &0x749f2490, mess id 0x1)!
%ASA-3-713902: Group = DefaultRAGroup, IP = 1.2.3.4, Removing peer from correlator table failed, no match!
%ASA-5-713259: Group = DefaultRAGroup, IP = 1.2.3.4, Session is being torn down. Reason: Phase 2 Mismatch
%ASA-4-113019: Group = DefaultRAGroup, Username = , IP = 1.2.3.4, Session disconnected. Session Type: IKEv1, Duration: 0h:00m:00s, Bytes xmt: 0, Bytes rcv: 0, Reason: Phase 2 Mismatch
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
%ASA-5-713257: Phase 1 failure: Mismatched attribute types for class Group Description: Rcv'd: Unknown Cfg'd: Group 2
具体来说，我认为这个错误有相关性：
类封装模式的属性类型不匹配：Rcv'd：UDP 传输配置：UDP 隧道（NAT-T）
加密驱动程序的调试似乎没有太大帮助；下面是 isakmp 级别 127 和 ipsec 级别 100：
7|Apr 26 2012|02:10:38|713236|||||IP = 1.2.3.4, IKE_DECODE RESENDING Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 124
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 124
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing Fragmentation VID + extended capabilities payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing NAT-Traversal VID ver RFC payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing ISAKMP SA payload
7|Apr 26 2012|02:10:30|715028|||||IP = 1.2.3.4, IKE SA Proposal # 1, Transform # 5 acceptable Matches global IKE entry # 1
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing IKE SA payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received Fragmentation VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received NAT-Traversal ver 02 VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received NAT-Traversal RFC VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, Oakley proposal is acceptable
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing SA payload
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 384
4|Apr 26 2012|02:10:30|113019|||||Group = DefaultRAGroup, Username = , IP = 1.2.3.4, Session disconnected. Session Type: IKEv1, Duration: 0h:00m:00s, Bytes xmt: 0, Bytes rcv: 0, Reason: Phase 2 Mismatch
5|Apr 26 2012|02:10:30|713259|||||Group = DefaultRAGroup, IP = 1.2.3.4, Session is being torn down. Reason: Phase 2 Mismatch
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=3a0d0c58) with payloads : HDR + HASH (8) + DELETE (12) + NONE (0) total length : 80
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing qm hash payload
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing IKE delete payload
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing blank hash payload
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, sending delete/delete with reason message
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, IKE SA MM:c7159238 terminating: flags 0x01000002, refcnt 0, tuncnt 0
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, IKE SA MM:c7159238 rcv'd Terminate: state MM_ACTIVE flags 0x00000042, refcnt 1, tuncnt 0
3|Apr 26 2012|02:10:30|713902|||||Group = DefaultRAGroup, IP = 1.2.3.4, Removing peer from correlator table failed, no match!
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, sending delete/delete with reason message
7|Apr 26 2012|02:10:30|715065|||||Group = DefaultRAGroup, IP = 1.2.3.4, IKE QM Responder FSM error history (struct &0x766c58e8) , : QM_DONE, EV_ERROR-->QM_BLD_MSG2, EV_NEGO_SA-->QM_BLD_MSG2, EV_IS_REKEY-->QM_BLD_MSG2, EV_CONFIRM_SA-->QM_BLD_MSG2, EV_PROC_MSG-->QM_BLD_MSG2, EV_HASH_OK-->QM_BLD_MSG2, NullEvent-->QM_BLD_MSG2, EV_COMP_HASH
3|Apr 26 2012|02:10:30|713902|||||Group = DefaultRAGroup, IP = 1.2.3.4, QM FSM error (P2 struct &0x766c58e8, mess id 0x1)!
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=bf34e4e7) with payloads : HDR + HASH (8) + NOTIFY (11) + NONE (0) total length : 84
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing qm hash payload
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing ipsec notify payload for msg id 1
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing blank hash payload
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, sending notify message
5|Apr 26 2012|02:10:30|713904|||||Group = DefaultRAGroup, IP = 1.2.3.4, All IPSec SA proposals found unacceptable!
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing IPSec SA payload
7|Apr 26 2012|02:10:30|713066|||||Group = DefaultRAGroup, IP = 1.2.3.4, IKE Remote Peer configured for crypto map: OUTSIDE_DYN_MAP
7|Apr 26 2012|02:10:30|715059|||||Group = DefaultRAGroup, IP = 1.2.3.4, Selecting only UDP-Encapsulated-Tunnel and UDP-Encapsulated-Transport modes defined by NAT-Traversal
7|Apr 26 2012|02:10:30|713224|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map Check by-passed: Crypto map entry incomplete!
7|Apr 26 2012|02:10:30|713221|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map check, checking map = vpnmap, seq = 65499...
7|Apr 26 2012|02:10:30|713222|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map check, map = vpnmap, seq = 20, ACL does not match proxy IDs src:1.2.3.4 dst:64.34.119.71
7|Apr 26 2012|02:10:30|713221|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map check, checking map = vpnmap, seq = 20...
7|Apr 26 2012|02:10:30|713222|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map check, map = vpnmap, seq = 10, ACL does not match proxy IDs src:1.2.3.4 dst:64.34.119.71
7|Apr 26 2012|02:10:30|713221|||||Group = DefaultRAGroup, IP = 1.2.3.4, Static Crypto Map check, checking map = vpnmap, seq = 10...
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, QM IsRekeyed old sa not found by addr
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing NAT-Original-Address payload
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing NAT-Original-Address payload
7|Apr 26 2012|02:10:30|720041|||||(VPN-Secondary) Sending Phase 1 Rcv Delete message (type RA, remote addr 1.2.3.4, my cookie C7159238, his cookie E973BA0F) to standby unit
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, L2TP/IPSec session detected.
7|Apr 26 2012|02:10:30|713024|||||Group = DefaultRAGroup, IP = 1.2.3.4, Received local Proxy Host data in ID Payload: Address 64.34.119.71, Protocol 17, Port 1701
7|Apr 26 2012|02:10:30|714011|||||Group = DefaultRAGroup, IP = 1.2.3.4, ID_IPV4_ADDR ID received
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing ID payload
7|Apr 26 2012|02:10:30|713025|||||Group = DefaultRAGroup, IP = 1.2.3.4, Received remote Proxy Host data in ID Payload: Address 10.65.3.237, Protocol 17, Port 1701
7|Apr 26 2012|02:10:30|714011|||||Group = DefaultRAGroup, IP = 1.2.3.4, ID_IPV4_ADDR ID received
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing ID payload
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing nonce payload
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing SA payload
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing hash payload
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE RECEIVED Message (msgid=1) with payloads : HDR + HASH (8) + SA (1) + NONCE (10) + ID (5) + ID (5) + NAT-OA (21) + NAT-OA (21) + NONE (0) total length : 324
7|Apr 26 2012|02:10:30|714003|||||IP = 1.2.3.4, IKE Responder starting QM: msg id = 00000001
7|Apr 26 2012|02:10:30|720041|||||(VPN-Secondary) Sending New Phase 1 SA message (type RA, remote addr 1.2.3.4, my cookie C7159238, his cookie E973BA0F) to standby unit
7|Apr 26 2012|02:10:30|715080|||||Group = DefaultRAGroup, IP = 1.2.3.4, Starting P1 rekey timer: 21600 seconds.
3|Apr 26 2012|02:10:30|713122|||||IP = 1.2.3.4, Keep-alives configured on but peer does not support keep-alives (type = None)
7|Apr 26 2012|02:10:30|713121|||||IP = 1.2.3.4, Keep-alive type for this connection: None
5|Apr 26 2012|02:10:30|713119|||||Group = DefaultRAGroup, IP = 1.2.3.4, PHASE 1 COMPLETED
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=0) with payloads : HDR + ID (5) + HASH (8) + VENDOR (13) + NONE (0) total length : 84
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing dpd vid payload
7|Apr 26 2012|02:10:30|715076|||||Group = DefaultRAGroup, IP = 1.2.3.4, Computing hash for ISAKMP
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing hash payload
7|Apr 26 2012|02:10:30|715046|||||Group = DefaultRAGroup, IP = 1.2.3.4, constructing ID payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, Connection landed on tunnel_group DefaultRAGroup
6|Apr 26 2012|02:10:30|713172|||||Group = DefaultRAGroup, IP = 1.2.3.4, Automatic NAT Detection Status: Remote end IS behind a NAT device This end is NOT behind a NAT device
7|Apr 26 2012|02:10:30|715076|||||Group = DefaultRAGroup, IP = 1.2.3.4, Computing hash for ISAKMP
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing hash payload
7|Apr 26 2012|02:10:30|714011|||||Group = DefaultRAGroup, IP = 1.2.3.4, ID_IPV4_ADDR ID received
7|Apr 26 2012|02:10:30|715047|||||Group = DefaultRAGroup, IP = 1.2.3.4, processing ID payload
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + ID (5) + HASH (8) + NONE (0) total length : 64
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=0) with payloads : HDR + KE (4) + NONCE (10) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + NAT-D (20) + NAT-D (20) + NONE (0) total length : 304
7|Apr 26 2012|02:10:30|713906|||||Group = DefaultRAGroup, IP = 1.2.3.4, Generating keys for Responder...
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, Connection landed on tunnel_group DefaultRAGroup
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, computing NAT Discovery hash
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing NAT-Discovery payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, computing NAT Discovery hash
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing NAT-Discovery payload
7|Apr 26 2012|02:10:30|715048|||||IP = 1.2.3.4, Send Altiga/Cisco VPN3000/Cisco ASA GW VID
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing VID payload
7|Apr 26 2012|02:10:30|715038|||||IP = 1.2.3.4, Constructing ASA spoofing IOS Vendor ID payload (version: 1.0.0, capabilities: 20000001)
7|Apr 26 2012|02:10:30|715048|||||IP = 1.2.3.4, Send IOS VID
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing xauth V6 VID payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing Cisco Unity VID payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing nonce payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing ke payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, computing NAT Discovery hash
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing NAT-Discovery payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, computing NAT Discovery hash
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing NAT-Discovery payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing nonce payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing ISA_KE payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing ke payload
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + KE (4) + NONCE (10) + NAT-D (20) + NAT-D (20) + NONE (0) total length : 260
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE SENDING Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 124
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing Fragmentation VID + extended capabilities payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing NAT-Traversal VID ver RFC payload
7|Apr 26 2012|02:10:30|715046|||||IP = 1.2.3.4, constructing ISAKMP SA payload
7|Apr 26 2012|02:10:30|715028|||||IP = 1.2.3.4, IKE SA Proposal # 1, Transform # 5 acceptable Matches global IKE entry # 1
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing IKE SA payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received Fragmentation VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received NAT-Traversal ver 02 VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715049|||||IP = 1.2.3.4, Received NAT-Traversal RFC VID
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing VID payload
7|Apr 26 2012|02:10:30|713906|||||IP = 1.2.3.4, Oakley proposal is acceptable
7|Apr 26 2012|02:10:30|715047|||||IP = 1.2.3.4, processing SA payload
7|Apr 26 2012|02:10:30|713236|||||IP = 1.2.3.4, IKE_DECODE RECEIVED Message (msgid=0) with payloads : HDR + SA (1) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + VENDOR (13) + NONE (0) total length : 384
5|Apr 26 2012|02:10:21|111005|||||1.2.3.4 end configuration: OK
7|Apr 26 2012|02:10:16|713906|||||IP = 1.2.3.4, sending delete/delete with reason message
7|Apr 26 2012|02:10:16|713906|||||IP = 1.2.3.4, IKE SA MM:b1f927e6 terminating: flags 0x01000002, refcnt 0, tuncnt 0
7|Apr 26 2012|02:10:16|715065|||||IP = 1.2.3.4, IKE MM Responder FSM error history (struct &0x76bd68f8) , : MM_DONE, EV_ERROR-->MM_WAIT_MSG3, EV_TIMEOUT-->MM_WAIT_MSG3, NullEvent-->MM_SND_MSG2, EV_SND_MSG-->MM_SND_MSG2, EV_START_TMR-->MM_SND_MSG2, EV_RESEND_MSG-->MM_WAIT_MSG3, EV_TIMEOUT-->MM_WAIT_MSG3, NullEvent
5|Apr 26 2012|02:10:16|111010|||||User 'pgrace', running 'CLI' from IP 1.2.3.4, executed 'logging asdm debugging'
这是我的配置：
ny-asa01# sh run crypto
crypto ipsec ikev1 transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec ikev1 transform-set TRANS_ESP_3DES_MD5 esp-3des esp-md5-hmac
crypto ipsec ikev1 transform-set TRANS_ESP_3DES_MD5 mode transport
crypto ipsec ikev1 transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac
crypto ipsec ikev1 transform-set TRANS_ESP_3DES_SHA mode transport
crypto ipsec security-association lifetime seconds 86400
crypto dynamic-map OUTSIDE_DYN_MAP 10 set ikev1 transform-set ESP-3DES-SHA
crypto dynamic-map OUTSIDE_DYN_MAP 10 set security-association lifetime seconds 86400
crypto dynamic-map OUTSIDE_DYN_MAP 10 set reverse-route
crypto dynamic-map OUTSIDE_DYN_MAP 20 set ikev1 transform-set TRANS_ESP_3DES_MD5
crypto dynamic-map OUTSIDE_DYN_MAP 20 set nat-t-disable
crypto dynamic-map L2TP_MAP 10 set ikev1 transform-set TRANS_ESP_3DES_MD5
crypto map vpnmap 10 match address A_to_B_vpn
crypto map vpnmap 10 set pfs
crypto map vpnmap 10 set peer 9.8.7.6
crypto map vpnmap 10 set ikev1 transform-set ESP-3DES-SHA
crypto map vpnmap 20 match address B_TO_C_vpn
crypto map vpnmap 20 set pfs
crypto map vpnmap 20 set peer 5.4.3.2
crypto map vpnmap 20 set ikev1 transform-set ESP-3DES-SHA
crypto map vpnmap 65500 ipsec-isakmp dynamic OUTSIDE_DYN_MAP
crypto map vpnmap interface outside
crypto isakmp identity address
crypto isakmp nat-traversal 300
crypto ikev1 enable outside
crypto ikev1 ipsec-over-tcp port 10000
crypto ikev1 policy 1
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
tunnel-group DefaultRAGroup general-attributes
address-pool stackvpn_pool
authentication-server-group RADIUS_SERVER
accounting-server-group RADIUS_SERVER
default-group-policy stackvpn_l2tp
tunnel-group DefaultRAGroup ipsec-attributes
ikev1 pre-shared-key *****
tunnel-group DefaultRAGroup ppp-attributes
no authentication chap
group-policy stackvpn_l2tp internal
group-policy stackvpn_l2tp attributes
dns-server value 5.6.7.8 9.10.11.12
vpn-tunnel-protocol l2tp-ipsec
ipsec-udp enable
split-tunnel-policy tunnelspecified
split-tunnel-network-list value VPN_SPLIT_TUNNEL
address-pools value stackvpn_pool
显然，第 2 阶段不匹配通常可以通过更改提议来解决，但不幸的是，Windows 7 似乎根本不允许您更改提议设置。在 Win7 配置中无法明确启用 NAT-T。
因此，我的问题是：我的配置有问题吗？有人在装有 8.4 的 ASA 上将 L2TP 与 Windows 7 配合使用吗？
答案1
我让 IPSEC 在 Windows 7 和带有 8.3(2)13（FIPS 认证）的 ASA 之间以“lan-to-lan”模式工作。
我非常肯定你对这个错误的看法是正确的——如果它不能协商 SA，你就会被击败。
我会尝试摆脱“NAT 穿越”。当然，您可能不得不尝试穿越 NAT，在这种情况下可能需要这样做。但这肯定是导致您出现问题的原因。
我猜你的另一个选择是弄清楚如何让 Windows 7 执行 nat-traversal SA 类型。你可以尝试在netsh advfirewall consecWindows 上探索一下。
这是我已收藏的参考资料。 http://technet.microsoft.com/en-us/library/dd736198(v=ws.10).aspx。
需要注意的是 - Windows 文档大量讨论了定期重新密钥连接的重要性。但是，如果您重新密钥过于频繁，ASA 会进行转储并断开连接。请确保重新密钥的频率不超过每 2 分钟一次。使用 MS 推荐的重新密钥字节数值可使其少于 2 分钟。
当我们打开支持案例时，M$ 无法给出任何真正理由来解释他们的建议。但他们却给我们寄来了一张巨额账单。
答案2
对于任何来这里的人来说：
如果在同一加密映射上配置了静态和动态对等体，则加密映射条目的顺序非常重要。动态加密映射条目的序列号必须高于所有其他静态加密映射条目。