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I have an ubuntu server machine (12.04) with 4 IP addresses for different websites that require unique ssl certificates.

I sometimes ssh out from this box and the box I am going to I have to tell it what IP address I will be coming from.

How do I specify which of the 4 ip addresses I want to use as my outgoing IP address?

If i do an ifconfig it appears that I am going out as the last ipaddress.

I guess you would want to specify either the address or the interface....

Thanks in advance!

-Mark

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1 Answer 1

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From ssh(1)

 -b bind_address
         Use bind_address on the local machine as the source address of
         the connection.  Only useful on systems with more than one
         address.

If this doesn't do what you want then you will have to configure routing (with ip route) in such a way that the preferred interface is used for the connection.

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  • Any ideas how to use it? ssh -b192.154.12.1? When I do this it just displays the usage options
    – Jamie Hutber
    Jun 14, 2018 at 10:28
  • 2
    @JamieHutber - ssh -b 192.154.12.1 username@destinationhost
    – styks
    Aug 8, 2020 at 15:04

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