尝试启动 IKEv2 vpn 服务器后，我失去了通过 ssh 连接到服务器的能力（ssh 超时）。我能够使用 hetzner 控制台进入机器（使用 ubuntu）并重置所有 ufw 规则。
我尝试通过 ssh 连接到服务器，日志如下：
% ssh -vvv [email protected]
OpenSSH_8.6p1, LibreSSL 3.3.6
debug1: Reading configuration data /Users/yurystepanov/.ssh/config
debug1: /Users/yurystepanov/.ssh/config line 11: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug2: resolve_canonicalize: hostname x.x.x.x is address
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts' -> '/Users/yurystepanov/.ssh/known_hosts'
debug3: expanded UserKnownHostsFile '~/.ssh/known_hosts2' -> '/Users/yurystepanov/.ssh/known_hosts2'
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug3: ssh_connect_direct: entering
debug1: Connecting to x.x.x.x [x.x.x.x] port 22.
debug3: set_sock_tos: set socket 3 IP_TOS 0x48
connect to address x.x.x.x port 22: Operation timed out
hetzner 技术人员说我的服务器前面没有其他防火墙。有没有办法从 ssh 机器内部或外部调试连接过程？像 mb 一样，除了 ubuntu 防火墙 (ufw) 之外，还有其他方法可以阻止我的 ssh 连接，谢谢大家！