Question about mapping networks

Hello All,

I'm new to this forum, I hope this question hasn't already been asked.

I am currently ssh into a server. I've examined the host file and found a host I need to gain access to. I do not have root privledges on the server i'm currently on. I may not even need to gain access to the server. I just have to figure out what server I need to connect to first before I can connect to the server I found. I can not ssh to it from the current server or the last server.

for example...

Question about mapping networks