大多数情况vpnc工作得很好（通过vpnc连接到网关客户）
但是，对于一些特定的客户（思科网关），我激活vpnc后立即收到以下消息：
vpnc: quick mode response rejected: (ISAKMP_N_INVALID_PAYLOAD_TYPE)(1) 在这种情况下，Vpnc无法连接
请问这里有什么问题？ ，
[root@TEST-LINUX-MACHINE /var/tmp]# vpnc Enter password for [email protected]: Connect Banner: | Remote access to UGG company resources is restricted to AUTHORIZED USERS! | | Company resources may only be used for the purpose of performing work-related duties. | The user is responsible for protecting the confidentiality and integrity of the company resources. | Violation may cause disciplinary action. | By clicking on "Continue" the user agrees with the rules above. | RTNETLINK answers: File exists **vpnc: quick mode response rejected: (ISAKMP_N_INVALID_PAYLOAD_TYPE)(1)** this means the concentrator did not like what we had to offer. Possible reasons are: * concentrator configured to require a firewall this locks out even Cisco clients on any platform expect windows which is an obvious security improvment. There is no workaround (yet). * concentrator configured to require IP compression this is not yet supported by vpnc. Note: the Cisco Concentrator Documentation recommends against using compression, expect on low-bandwith (read: ISDN) links, because it uses much CPU-resources on the concentrator
我也尝试做下面的事情
Add the line "NAT Traversal Mode cisco-udp" in /etc/vpnc.conf
要么
Add the line "Local Port 10000" in /etc/vpnc.conf
但他们剂量帮助，我仍然得到坏消息（chuld不能由vpnc连接）
请咨询问题在哪里？