Sometimes it is necessary to SSH through a host in order to access another host. Although this can be done by manually SSH-ing from one host to another repeatedly, the same task can be accomplished in one line by jumphosting.
Dynamic jumphosts are most useful for times in which you only need to make this jump once, or rather infrequently.
The basic format for jumphosting is
ssh -J user1@host1:port1 user2@host2:port2
However, if ports are the same for different hosts, you can use the format
ssh -J user1@host1 user2@host2
Also, if you need to jumphost through multiple hosts, the format below is also legal
ssh -J user1@host1:port1,user2@host2:port2 user3@host3
Static jumphosts are most useful for times in which you will often need to make this jump, and allows you type a short, simple command instead of the longer line as shown in Dynamic Jumphosts section above. In order to create this shortcut, you must edit your ~/.ssh/config file.
In your ~/.ssh/config file
Host directJump HostName mydirectjump.example.org Host secondJump HostName mysecondjump.example.org ProxyJump directJump
If another jump is needed, the following format can be added as needed to the same ~/.ssh/config file
Host finalJump HostName myfinaljump.example.org ProxyJump secondJump
After saving the above changes to your ~/.ssh/config file, if you wish to access that final host