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Editorial Team
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Asked: 2026-06-01T15:27:02+00:00

We have a CentOS server with 2 ethernet adapters. Both of these adapters have

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We have a CentOS server with 2 ethernet adapters. Both of these adapters have access to the internet and both can be used to connect to remote sites.

Is there a way to know which ethernet adapter will be used when connecting to an FTP server or connecting via SSH to another server? If so, is there a way to force it to use a particular adapter without disabling any?

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  1. Editorial Team

    Perhaps you can set up a special route for the servers you intend to connect to? Have a look at the route command, or the “ip route” command.

    EDIT: This seems to contain an example of what I’m saying: http://www.cyberciti.biz/faq/howto-linux-configuring-default-route-with-ipcommand/

    Specifically:

    Type the following command to sent all packets to the local enter
    code herenetwork 192.168.1.0 directly through the device eth0:,
    enter

    ip route add 192.168.1.0/24 dev eth0
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