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From: Jason Haar <jason_haar@trimble.com>
Date: Mon, 20 Nov 2017 19:56:23 +1300
Message-ID: <CAFChrgLSphY+ss5U6CKKVRy54i9Refs8HxHX4A63DxJVkQaugA@mail.gmail.com>
Subject: Re: Unreachable RDP desktop after renaming computer
To: user@guacamole.apache.org
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archived-at: Mon, 20 Nov 2017 06:56:50 -0000

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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 <vnick@apache.org> 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

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<div dir=3D"ltr">telnet&#39;ing to one of these &quot;broken&quot; servers =
on port 3389 from a terminal on the guacamole server itself would prove/dis=
prove if there is a network connectivity issue. If telnet doesn&#39;t work,=
 it&#39;s not a guacamole issue...</div><div class=3D"gmail_extra"><br><div=
 class=3D"gmail_quote">On Sat, Nov 18, 2017 at 8:37 AM, Nick Couchman <span=
 dir=3D"ltr">&lt;<a href=3D"mailto:vnick@apache.org" target=3D"_blank">vnic=
k@apache.org</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div d=
ir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><span clas=
s=3D""><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-=
left:1px #ccc solid;padding-left:1ex"><div><div class=3D"m_-260324771289008=
8584h5"><span style=3D"color:rgb(34,34,34)">Hi Nick,</span><br></div></div>
<br>
Thanks very much for the reply. Would DNS caching be an issue if I&#39;m us=
ing<br>
IP addresses only to create the connections in Guacamole? I should have<br>
clarified that I&#39;m only using Amazon EC2 internal network IP addresses =
for<br>
the hostname in the Guacamole connections. Those IPs don&#39;t change, as f=
ar as<br>
I can tell, but I&#39;ll double-check that. I&#39;m pretty sure they would =
if I<br>
powered the Windows machines completely off, but I&#39;m only issuing a reb=
oot.<br>
<br></blockquote><div><br></div></span><div>Okay, yeah, that doesn&#39;t so=
und like DNS - it actually sounds like maybe the IP is changing, or somethi=
ng else - the security group, maybe, or perhaps the host firewall (if you&#=
39;re joining a Windows domain, maybe it&#39;s changing the firewall settin=
gs from GPO)?</div><span class=3D"HOEnZb"><font color=3D"#888888"><div><br>=
</div><div>-Nick=C2=A0</div></font></span></div></div></div>
</blockquote></div><br><br clear=3D"all"><div><br></div>-- <br><div class=
=3D"gmail_signature" data-smartmail=3D"gmail_signature"><div dir=3D"ltr"><d=
iv>Cheers</div><div><br></div><div>Jason Haar</div><div>Information Securit=
y Manager, Trimble Navigation Ltd.</div><div>Phone: +1 408 481 8171</div><d=
iv>PGP Fingerprint: 7A2E 0407 C9A6 CAF6 2B9F 8422 C063 5EBB FE1D 66D1</div>=
</div></div>
</div>

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