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If you are running the Jetty engine behind a proxy or load balancer Jetty has built-in support for forwarding the client address and other details via headers using its http-forwarded module, and after enabling it as above you can edit the resulting properties file to configure it.
You may also need to add/enable a system property via "-Dorg.eclipse.jetty.util.HostPort.STRIP_IPV6=true" to
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strip the brackets from
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an IPv6
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address if this causes problems with some SPs.
Currently Jetty 9.4 adds brackets around the IPv6 address if the address in the X-Forwarded-For header does not containt brackets. You can solve this by adding the brackets to the X-Forwarded-For header and the STRIP_IPV6 parameter. More info https://github.com/eclipse/jetty.project/issues/1503#issuecomment-631052792
Configure Jetty to listen only on HTTP
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