<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">The other strange thing is (on the target side, doing an nmap to the server):<div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Nmap done: 1 IP address (1 host up) scanned in 334.13 seconds</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""># nmap 192.168.178.51</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Starting Nmap 7.70 ( <a href="https://nmap.org" class="">https://nmap.org</a> ) at 2020-05-09 12:55 CEST</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Nmap scan report for Christophs-MBP.fritz.box (192.168.178.51)</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Host is up (0.00050s latency).</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">All 1000 scanned ports on Christophs-MBP.fritz.box (192.168.178.51) are closed</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">MAC Address: A8:60:B6:2E:DF:6D (Apple)</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139); min-height: 12px;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: "Courier New"; background-color: rgb(254, 244, 139);" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Nmap done: 1 IP address (1 host up) scanned in 333.33 seconds</span></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class=""><div><br class=""></div><div>No port open to the outside.</div><div><br class=""><blockquote type="cite" class=""><div class="">Am 09.05.2020 um 13:07 schrieb Christoph Kukulies <<a href="mailto:kuku@kukulies.org" class="">kuku@kukulies.org</a>>:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div class=""><br class=""><blockquote type="cite" class=""><div class="">Am 09.05.2020 um 12:39 schrieb Richard Tobin <<a href="mailto:richard@inf.ed.ac.uk" class="">richard@inf.ed.ac.uk</a>>:</div><br class="Apple-interchange-newline"><div class=""><div class=""><blockquote type="cite" class=""><blockquote type="cite" class="">Launching X11 manually ./X11 is a good point. Did that and XQuartz<br class="">appears in the dock. Firing then xclock on the Target doesn't do<br class="">a connection. Silence. The xclock just hangs there.<br class=""></blockquote><br class="">Does running xclock or other X clients locally work?<br class=""></blockquote></div></div></blockquote><div class=""><br class=""></div>No. xclock also hangs locally.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><blockquote type="cite" class=""><div class=""><div class=""><blockquote type="cite" class=""><br class="">If it does, X is listening on the unix socket as expected and the<br class="">problem must be with ssh connecting to it. What X-related lines<br class="">does /etc/ssh/ssh_config have?<br class=""></blockquote><br class="">Also, do ssh -v -Y and see what it says about X11 forwarding.<br class=""><br class=""></div></div></blockquote><div class=""><br class=""></div><div class=""><br class=""></div>Have gone through the ssh connection already in previous posts.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">What make me wonder is, when I’m looking at the process command line of the Xquartz process that there is a</div><div class="">-nolisten tcp (?!)</div><div class=""><br class=""></div><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; background-color: rgba(159, 159, 159, 0.5);" class=""> 6306 s003 S< 0:00.00 /opt/X11/bin/Xquartz :0 -nolisten tcp -iglx -auth /var/root/.serverauth.6258</span></div><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; background-color: rgba(159, 159, 159, 0.5);" class=""><br class=""></span></div><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; background-color: rgba(159, 159, 159, 0.5);" class="">Who is doing that?</span></div><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo; font-size: 11px; background-color: rgba(159, 159, 159, 0.5);" class=""><br class=""></span></div><div class="">—</div><div class="">Christoph</div><div class=""><br class=""><blockquote type="cite" class=""><div class=""><div class="">-- Richard<br class=""><br class="">-- <br class="">The University of Edinburgh is a charitable body, registered in<br class="">Scotland, with registration number SC005336.<br class=""><br class=""></div></div></blockquote></div><br class=""></div></div></blockquote></div><br class=""></div></div></body></html>