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ASA 5505 连接到 VPN 时停止本地互联网

tag-icon • tag-icon vpn cisco-asa l2tp
ASA 5505 连接到 VPN 时停止本地互联网

我有一台运行固件 8.2(5) 的 Cisco ASA 路由器，它在 192.168.30.0/24 上托管内部 LAN。

我已经使用 VPN 向导来设置 L2TP 访问，并且我可以从 Windows 机器顺利连接，并且可以 ping VPN 路由器后面的主机。

但是，连接到 VPN 后，我无法再 ping 出互联网或浏览网页。我希望能够访问 VPN，同时浏览互联网 - 我知道这称为拆分隧道（已在向导中勾选该设置，但无效），如果可以，我该怎么做？

或者，如果拆分隧道设置起来很麻烦，那么让连接的 VPN 客户端从 ASA WAN IP 访问互联网就可以了。

names
!
interface Ethernet0/0
 switchport access vlan 2
!
interface Ethernet0/1
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 192.168.30.1 255.255.255.0 
!
interface Vlan2
 nameif outside
 security-level 0
 ip address 208.74.158.58 255.255.255.252 
!
ftp mode passive
access-list inside_nat0_outbound extended permit ip any 10.10.10.0 255.255.255.128 
access-list inside_nat0_outbound extended permit ip 192.168.30.0 255.255.255.0 192.168.30.192 255.255.255.192 
access-list DefaultRAGroup_splitTunnelAcl standard permit 192.168.30.0 255.255.255.0 
access-list DefaultRAGroup_splitTunnelAcl_1 standard permit 192.168.30.0 255.255.255.0 
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool LANVPNPOOL 192.168.30.220-192.168.30.249 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 192.168.30.0 255.255.255.0
route outside 0.0.0.0 0.0.0.0 208.74.158.57 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.30.0 255.255.255.0 inside
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac 
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac 
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac 
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac 
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac 
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac 
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac 
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac 
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac 
crypto ipsec transform-set TRANS_ESP_3DES_SHA esp-3des esp-sha-hmac 
crypto ipsec transform-set TRANS_ESP_3DES_SHA mode transport
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5 TRANS_ESP_3DES_SHA
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!

threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy DefaultRAGroup internal
group-policy DefaultRAGroup attributes
 dns-server value 192.168.30.3
 vpn-tunnel-protocol l2tp-ipsec 
 split-tunnel-policy tunnelspecified
 split-tunnel-network-list value DefaultRAGroup_splitTunnelAcl_1
username user password Cj7W5X7wERleAewO8ENYtg== nt-encrypted privilege 0
tunnel-group DefaultRAGroup general-attributes
 address-pool LANVPNPOOL
 default-group-policy DefaultRAGroup
tunnel-group DefaultRAGroup ipsec-attributes
 pre-shared-key *****
tunnel-group DefaultRAGroup ppp-attributes
 no authentication chap
 authentication ms-chap-v2
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum client auto
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map 
  inspect ftp 
  inspect h323 h225 
  inspect h323 ras 
  inspect rsh 
  inspect rtsp 
  inspect esmtp 
  inspect sqlnet 
  inspect skinny  
  inspect sunrpc 
  inspect xdmcp 
  inspect sip  
  inspect netbios 
  inspect tftp 
  inspect ip-options 
!
service-policy global_policy global
prompt hostname context 
: end

答案1

您使用哪种客户端软件进行连接？拆分隧道已设置，但我认为您需要连接 Cisco 客户端软件才能使其正常运行。

无论如何，要让 VPN 客户端的互联网流量进入互联网，看起来您需要的是：

same-security-traffic permit intra-interface
nat (outside) 1 192.168.30.0 255.255.255.0

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