On Wed, Oct 10, 2007 at 10:28:23AM -0500, Gary Mills wrote:
> Since upgrading from srss_3.1 to srss_4.0, I've noticed something
> peculiar with my Sun Ray at home, which is behind a NAT router.  I get
> a timeout when logging in or logging out, but not when connecting or
> disconnecting with my smart card.  The same timeout happens when
> starting the Sun Ray connector.  During a timeout, the Sun Ray goes
> dead for a few minutes, until it reboots.  I get a locked screen when
> that happens.  Sun Rays at the office don't exhibit this behavior.
> 
> One thing that I notice is that the firmware on this Sun Ray is still
> 3.1_32,REV=2005.08.24.08.55, whereas all the others at work have
> firmware 4.0_48_2007.08.01.15.48.  Is this the cause of the problem?
> If I set up a firmware server in the local DHCP configuration, will
> it download the new firmware?

I brought my home Sun Ray into the office to upgrade its firmware to
4.0_48_2007.08.01.15.48.  This was successful and quite easy to do.
Unfortunately, it had no effect on the problem I've been observing.

> Is perhaps something blocked by the NAT router?  I'm using ipfilter in
> Solaris 10 8/07 for this.  Snoop tells me that the normal traffic is
> mostly UDP, but during the timeout the UDP traffic seems to stop.  At
> that point, the Sun Ray server seems to stop responding to UDP,
> issuing ICMP Destination unreachable responses.  TCP does start up in
> both directions, but traffic is still mostly gone.  After some time,
> the Sun Ray times out and resets.  That's when normal traffic resumes.

At home today, I used the Sun Windows connector to log into our
Windows terminal server at the office.  Just as I got a glimse of the
Windows window and heard the Microsoft arpeggio, I got that timeout
again. I had to control-moon the Sun Ray and unlock my screen to
recover.  Is something happening at this point that doesn't make it
through the NAT router?

-- 
-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-
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