Xdmcp port. You should be able to use the iptables in the similar way.

Xdmcp port. Specifically, it allows X display managers to interface with X terminals or other X server-based systems, by facilitating the remote display management process. The X Display Manager Control Protocol (XDMCP) uses UDP port 177. Unless you need to debug the system, leave this with its default value of 177. Sep 11, 2015 · With XDMCP, one computer A running X11 can connecting computer B running X11, and interact with computer B as if one were physically at computer B. If set to 0 xdm will not listen for XDMCP or Chooser requests. (For example, the server cannot simply be started by a fork GDM and XDMCP configuration for remote graphical Linux desktop access. Open up UDP port 177 to accept incomming connections from any port. . # netstat -an|grep 6000 No listening port As long as no network problems exist with the remote UNIX/Linux system and the XDMCP settings are properly configured on the device, an XDMCP packet exchange will first be performed through UDP port number 177 (can be changed through server settings). (Check for iptables references at the Resources area or this setup example). gvxjzf olsff az yq g6hvgmn uig7yg6e q00xf ke1u pf5tmd ucmlr7