Draytek vigor2960 series User Manual page 151

7. In the following page, check the box of Enable. Choose Object as the Source Type
and choose IP range object profile from the drop down list of IP Object. Click Apply to
save the settings.
And,
8. Upon completing the above configuration, you have specified the outgoing IP
address(es) for some specific computers.
Now, you bind some specific computers to some WAN IP alias for outgoing traffic.
Vigor2960 Series User's Guide
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