[6281] in java-interest
Re: NS 2.01 & Firewalls
daemon@ATHENA.MIT.EDU (brian sharon)
Thu Mar 28 14:59:30 1996
Date: Wed, 20 Mar 1996 10:07:27 -0600
Reply-To: Java Interest <JAVA-INTEREST@JAVASOFT.COM>
From: brian sharon <brian@JJT.COM>
To: Multiple recipients of list JAVA-INTEREST
<JAVA-INTEREST@JAVASOFT.COM>
In-Reply-To: <2.2.32.19960319155720.00911b4c@metronet.com>
On Tue, 19 Mar 1996, Steve Livingston wrote:
> Anyone seen this one?
Why yes, for the first time, yesterday.
> Applet is OK with NS 2.0...but with 2.01:
>
> (a) Still OK if web server <-> NS 2.01 is not through a firewall.
>
> (b) If web server <-> NS 2.01 is through a firewall:
> Security Violation
> Untested Host Translation:
> java.net.UnkownHostException:<host>
> Where <host> is the web server.
Just yesterday, I got this letter from someone looking at my page:
In a completely non-work-related context, I landed on your Java Paint
Web Page. But when I tried to paint, even though I have a Java enabled
Browser (Netscape Navigator 2.01 for HP-UX (Unix)), I got the following
message from the Java Console:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
applet exception: class Paint got a security violation: Untested Host
Translation: java.net.UnknownHostException: lonestar.jjt.com
java.lang.SecurityException: Untested Host Translation:
java.net.UnknownHostException: lonestar.jjt.com
at java.net.URL.getHostAddress(URL.java:226)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
My applet tries to contact my host and pull back an image file with a
getImage call. This particular user was behind a firewall at HP, and
was unable to run my applet. And when he tried from his home machine (not
behind the firewall) last night, he had no problems.
This seems like a problem. You know, besides the fact that HP employees
are looking at my pages in the middle of the day (those slackers!).
--brian
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