telnet'ing to one of these "broken" servers on port 3389 from a terminal on the guacamole server itself would prove/disprove if there is a network connectivity issue. If telnet doesn't work, it's not a guacamole issue...
On Sat, Nov 18, 2017 at 8:37 AM, Nick Couchman <[email protected]> wrote: > Hi Nick, >> >> Thanks very much for the reply. Would DNS caching be an issue if I'm using >> IP addresses only to create the connections in Guacamole? I should have >> clarified that I'm only using Amazon EC2 internal network IP addresses for >> the hostname in the Guacamole connections. Those IPs don't change, as far >> as >> I can tell, but I'll double-check that. I'm pretty sure they would if I >> powered the Windows machines completely off, but I'm only issuing a >> reboot. >> >> > Okay, yeah, that doesn't sound like DNS - it actually sounds like maybe > the IP is changing, or something else - the security group, maybe, or > perhaps the host firewall (if you're joining a Windows domain, maybe it's > changing the firewall settings from GPO)? > > -Nick > -- Cheers Jason Haar Information Security Manager, Trimble Navigation Ltd. Phone: +1 408 481 8171 PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1
