Managed to gain access to one of the macs on the network. Duplicated those settings on the others - still no connections.
~$ vinagre --gtk-vnc-debug gtk-vnc: Expose 0x0 @ 1144,645 gtk-vnc: Started background coroutine gtk-vnc: Resolving host 192.0.2.243 5900 gtk-vnc: Trying socket 20 gtk-vnc: Doing final VNC cleanup gtk-vnc: Requesting that VNC close gtk-vnc: Requesting that VNC close gtk-vnc: Releasing VNC widget gtk-vnc: Expose 0x0 @ 1144,645 gtk-vnc: Started background coroutine gtk-vnc: Resolving host 192.0.2.65 5900 gtk-vnc: Trying socket 20 gtk-vnc: Failed with errno = 110 gtk-vnc: Doing final VNC cleanup gtk-vnc: Requesting that VNC close gtk-vnc: Requesting that VNC close gtk-vnc: Releasing VNC widget
Managed to gain access to one of the macs on the network. Duplicated those settings on the others - still no connections.
~$ vinagre --gtk-vnc-debug
gtk-vnc: Expose 0x0 @ 1144,645
gtk-vnc: Started background coroutine
gtk-vnc: Resolving host 192.0.2.243 5900
gtk-vnc: Trying socket 20
gtk-vnc: Doing final VNC cleanup
gtk-vnc: Requesting that VNC close
gtk-vnc: Requesting that VNC close
gtk-vnc: Releasing VNC widget
gtk-vnc: Expose 0x0 @ 1144,645
gtk-vnc: Started background coroutine
gtk-vnc: Resolving host 192.0.2.65 5900
gtk-vnc: Trying socket 20
gtk-vnc: Failed with errno = 110
gtk-vnc: Doing final VNC cleanup
gtk-vnc: Requesting that VNC close
gtk-vnc: Requesting that VNC close
gtk-vnc: Releasing VNC widget