CODEWITHSUNDEEP
linuxnetwork-programmingsshscp
richselian
richselian

Reputation: 731

How to transfer a file in an "indirect" ssh connection?

I have to access my server in such way: localhost -> remote1 -> remote2 (my server)

[xxxx@localhost] $ ssh yyyy@remote1
[yyyy@remote1]   $ ssh zzzz@remote2
[zzzz@remote2]   $ echo "now I logined into my server..."

I know how to transfer files with scp. however I have no read or write permissions on remote1. How can I transfer a file to remote2?

Upvotes: 1

Views: 697

Answers (2)

glglgl
glglgl

Reputation: 91017

Another alternative could be to use a Proxy command:

scp -o ProxyCommand='ssh yyy@remote1 netcat %h %p 2> /dev/null' zzz@remote2:fromfile tofile

if remote1 has netcat installed. Other viable options could be nc or socat (the latter has a different syntax).

Upvotes: 2

VoidPointer
VoidPointer

Reputation: 3097

Try this,

ssh -L localhost:8022:remote2:22 remote1

Now, you can use localhost port 8022 to contact 22 of remote2 via remote1. This session session should be active whenever you need to transfer. Use

scp -P 8022 /path/locale/file 127.0.0.1:/path/on/remote2

This is commonly called as SSH Tunneling. You can search and get to know lot about it.

Upvotes: 1

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