我正在努力让我的思科设备发送系统日志数据到VPN隧道后面运行的远程服务器。 系统日志IP 10.1.1.161在远程端。 10.23.2.0是本地子网。 从10.1.1.160的SNMP轮询似乎工作，但我不能从10.23.2.0 – > 10.1.1.161获得数据。以下是我的configuration，我很可能是错误的东东。
谢谢你的时间。
: Saved : ASA Version 8.4(3) ! interface Ethernet0/0 switchport access vlan 2 ! interface Ethernet0/1 ! interface Ethernet0/2 ! interface Ethernet0/3 ! interface Ethernet0/4 ! interface Ethernet0/5 ! interface Ethernet0/6 ! interface Ethernet0/7 ! interface Vlan1 description LAN nameif inside security-level 100 ip address 10.23.2.1 255.255.255.0 ! interface Vlan2 description WAN nameif outside security-level 0 ip address 94.198.190.90 255.255.255.252 ! boot system disk0:/asa843-k8.bin ftp mode passive clock timezone GMT/BST 0 clock summer-time GMT/BDT recurring last Sun Mar 1:00 last Sun Oct 2:00 dns server-group DefaultDNS domain-name avanta.co.uk object network obj-10.23.2.0 subnet 10.23.2.0 255.255.255.0 object network obj-10.1.1.0 subnet 10.1.1.0 255.255.255.0 object network obj-10.47.2.0 subnet 10.47.2.0 255.255.255.0 object network obj_any subnet 0.0.0.0 0.0.0.0 access-list crypto extended permit ip 10.23.2.0 255.255.255.0 10.1.1.0 255.255.255.0 access-list crypto extended permit ip 10.23.2.0 255.255.255.0 10.47.2.0 255.255.255.0 access-list NAT0 extended permit ip 10.23.2.0 255.255.255.0 10.1.1.0 255.255.255.0 access-list NAT0 extended permit ip 10.23.2.0 255.255.255.0 10.47.2.0 255.255.255.0 access-list from_outside extended permit icmp any any echo access-list 101 extended permit ip 10.23.2.0 255.255.255.0 10.1.1.0 255.255.255.0 access-list 101 extended permit udp host 94.198.190.90 host 10.1.1.161 eq syslog access-list 101 extended permit udp host 94.198.190.90 host 10.1.1.2 eq 5999 pager lines 24 logging enable logging buffer-size 16096 logging buffered warnings logging history notifications logging asdm warnings logging host outside 10.1.1.161 logging host outside 10.1.1.2 17/5999 mtu inside 1500 mtu outside 1500 no failover icmp unreachable rate-limit 1 burst-size 1 icmp permit any inside icmp permit any outside asdm image disk0:/asdm-645.bin no asdm history enable arp timeout 14400 nat (inside,outside) source static obj-10.23.2.0 obj-10.23.2.0 destination static obj-10.1.1.0 obj-10.1.1.0 no-proxy-arp route-lookup nat (inside,any) source static obj-10.23.2.0 obj-10.23.2.0 destination static obj-10.1.1.0 obj-10.1.1.0 no-proxy-arp nat (inside,any) source static obj-10.23.2.0 obj-10.23.2.0 destination static obj-10.47.2.0 obj-10.47.2.0 no-proxy-arp ! object network obj_any nat (inside,outside) dynamic interface route outside 0.0.0.0 0.0.0.0 94.198.190.89 1 timeout xlate 3:00:00 timeout pat-xlate 0:00:30 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 user-identity default-domain LOCAL aaa authentication ssh console LOCAL aaa authorization command LOCAL http server enable http 10.23.2.0 255.255.255.0 inside http 0.0.0.0 0.0.0.0 outside snmp-server host inside 10.1.1.160 poll community ***** version 2c no snmp-server location no snmp-server contact snmp-server community ***** crypto ipsec ikev1 transform-set DES-MD5 esp-des esp-md5-hmac crypto map AVA_tunnel 10 match address crypto crypto map AVA_tunnel 10 set peer 88.211.50.154 crypto map AVA_tunnel 10 set ikev1 transform-set DES-MD5 crypto map AVA_tunnel interface outside crypto isakmp identity address crypto ikev1 enable outside crypto ikev1 policy 10 authentication pre-share encryption des hash sha group 2 lifetime 86400 telnet timeout 5 ssh 10.23.2.0 255.255.255.0 inside ssh 0.0.0.0 0.0.0.0 outside ssh timeout 5 ssh version 2 console timeout 0 management-access inside threat-detection basic-threat threat-detection statistics access-list no threat-detection statistics tcp-intercept webvpn tunnel-group 88.211.50.154 type ipsec-l2l tunnel-group 88.211.50.154 ipsec-attributes ikev1 pre-shared-key ***** ! ! ! policy-map global_policy class class-default inspect icmp ! 我发现一个常见的错误是不包括“日志logging陷阱”configuration命令。
无论是否通过VPN执行日志logging，这都是我们在客户ASA上login到系统日志服务器的原因：
logging enable logging buffer-size 102400 logging buffered notifications logging trap notifications logging asdm notifications logging host inside <IP of syslog server> management-access inside
您的设备正尝试将系统日志stream量发送到外部接口，这不会被VPN隧道策略所捕获。
改为logging host inside 10.1.1.161 。
如上所述，您需要指定logging的源接口
日志源接口（接口，例如vlan 1）