IPSec 隧道不会出现由于封装错误而丢弃的隧道流量
20230
Created On 07/11/22 00:55 AM - Last Modified 01/31/23 01:45 AM
Symptom
- 由于封装错误,IPSec 隧道不会出现并且隧道流量正在被丢弃
- 第一阶段失败
- 没有IKE/ISAKMP发起的数据包firewall对等
- 全局计数器在过滤隧道流量时显示如下所示的封装错误
flow_tunnel_encap_err 1 1 drop flow tunnel Packet dropped: tunnel encapsulation error
- 从 cli 测试 vpn 网关返回消息“SA忽略测试启动:找不到隧道配置。”在 ikemgr.log 中,如下例所示
> test vpn ike-sa gateway <GATEWAY>
<DATE> [INFO]: { 3: }: <GATEWAY>: IKEv2 SA test initiate ignored: cannot find tunnel configuration
- 流基本调试显示由于隧道解析失败而丢弃的有趣数据包
Packet enters tunnel encap stage, tunnel interface null Resolving tunnels in multi-tunnel case for ifp:tunnel.x <-------- x is the associated tunnel interface Packet dropped, tunnel resolution failure
Environment
- 下一代 Firewall
- PAN-OS 10.1.5, 10.1.6
- IPSec 在另一个下一代上配置和终止 Firewall
Cause
IPSec 隧道配置被禁用,即使它似乎是从 WebUI 启用的
要确认其是否已禁用,请运行以下命令
admin@firewall(active)> configure
admin@firewall(active)# show network tunnel ipsec ShapeTX_AWS_Tunnel
tunnel-interface tunnel.1;
disabled yes; <-------------------- DISABLED
comment "Left IPSEC tunnel to AWS";Resolution
从 WebUI 或CLI
从网页界面:
- 从网络> IPSec 隧道> 选择 IPSec 隧道配置
- 选择使能够
- 犯罪变化
从CLI:
> configure Entering configuration mode # set network tunnel ipsec <Name of IPSec Tunnel> disabled no # commit