How to Enable X11 forwarding for dropbear?

[snowdream]

I want to install dropbear on alpine 3.21.0 and debian 12.8.0, and Enable X11 forwarding for dropbear.

But i do now know what to do?

What configuration should i modify?

or what arg should i use to start dropbear?

[mkj]

You should be able to build Dropbear server with a file localoptions.h with contents

#define DROPBEAR_X11FWD 1

Only Dropbear server supports x11 forwarding - you'll have to use openssh client.

[snowdream]

Is x11 forwarding feature enabled default?(Alpine, Debian)

Or I have to build from source myself to support x11 forwarding.

[mkj]

It looks disabled in debian, not sure about alpine.

[snowdream]

@mkj Thank you.