2018年3月3日 · The XDMCP protocol was developed way before SSH and is completely insecure. It does not apply to your case, unless you specifically configure the display manager (the gdm , kdm , xdm or any other *dm ) to be XDMCP-aware, as XDMCP is disabled by default on modern systems because it isn't secure.

2009年1月6日 · Btw, sometimes firewalls get in the way of the UDP protocol for XDMCP. If that happens, look up the port numbers (one UDP outgoing, and one TCP incomming) and unblock them. Other xdmcp troubleshooting tips here.

2016年12月2日 · XDMCP is designed for this. On your server, you need to enable XDMCP support in your desktop manager: On your server, you need to enable XDMCP support in your desktop manager: if you're using kdm , look for

2018年5月9日 · Caution: »XDMCP is inherently insecure. XDMCP is not a ciphered protocol. This may allow an attacker to capture keystrokes entered by a user. XDMCP is vulnerable to man-in-the-middle attacks. This may allow an attacker to steal the credentials of legitimate users by impersonating the XDMCP server.« cisecurity.org CIS Ubuntu Linux Benchmark 20.04

2015年5月22日 · As XDMCP is using the below ports and make sure these ports are open in firewall: XDMCP 177 UDP; X11 protocol 6000-6005 TCP; xfs: X font server 7100 TCP; Consider allowing remote XDMCP session for public addresses is not very secure. You can think using it through VPN or over SSH.

2023年9月11日 · Specifically, I want the computer to continue functioning as a workstation running X with graphical login while also providing multi-user GUI sessions over the network. My choices therefore appeared to be: XDMCP, VNC or RDP. I have in the past provisioned all 3 successfully - but none recently. I expected this to be straightforward.

Numerous posts for adding XDMCP to Ubuntu server tell me that I just need to bring up the login screen settings and flip to the "Remote" tab and ... The Login Screen Settings in 11.04 (natty) has no tabs.

2019年6月5日 · Providing XDMCP service itself is not hard. Some configuration with XDM is enough. But XDM has to start a X process and show something, if there is some hardware issues, it tails to start. While in my opinion, XDMCP server is pure CPU task. So, is it possible to provide XDMCP service without using video card or screen?

2019年6月17日 · Thanks for your reply and sorry for my unclear representation, my question is how to remote login from a rhel6/7 client to another linux host via xdmcp directly at the login windows. – Jimmy Commented Jun 17, 2019 at 5:49

2018年6月2日 · [daemon] WaylandEnable = false [security] DisallowTCP = false [xdmcp] Enable = true Port = 177 [chooser] [debug] # Uncomment the line below to turn on debugging # More verbose logs # Additionally lets the X server dump core if it crashes Enable = true But when I restart the debian system, I see the following output on netstat: