$HOME/.ssh/config
场景：Host A 可以连接Host Jump，连接Host wan.foreign延迟过高或失败，Host Jump和A、wan.foreign连接都稳定
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| A ----> Jump ----> wan.foreign
| ^
| |
|----- Can't Connect --- |
|
示例配置如下
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| Host jump
HostName 192.168.0.1
Port 22
User root
Host wan.foreign-*
HostName %h
ProxyCommand ssh jump -W %h:%p
Compression yes
|