RE: Cannot access SSL sites
- From: "Jim Harrison" <jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Mon, 1 Dec 2003 11:51:49 -0800
Sorry; a Moebius strip is a single strip of any material (usually paper)
that has the two ends joined with a single half-twist in the middle,
effectively creating an infinite loop.
That registry key is meant to solve your problem.
Read here:
http://support.microsoft.com/default.aspx?scid=kb;en-us;297324&Product=ISAS
You're not the first person to hit this bug; that's why there was a hotfix
(included in SP1) to address it.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://www.microsoft.com/isaserver
http://isaserver.org/Jim_Harrison
http://isatools.org
Read the help, books and articles!
----- Original Message -----
From: "William Robertson" <robertson.william@xxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, December 01, 2003 11:29
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Okkkaaaayyyy, not knowing how to spell Moebius, let alone understand it....
this doesn't bring me any closer to solving my problem. I understand now
that enabling the SSL listener will not fix the problem, but I still have a
situation that only allows users that have the "ANY-ANY" S&C rule to access
SSL websites...
The registry option you presented, was it meant to make any drastic changes?
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 01 December 2003 21:25 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Don't worry; the learning curve for ISA is really a Moebius strip...
This setting allows the client to make their requests to ISA via SSL on the
port you specify (8443, by default).
It has nothing whatsoever to do with the SSL connection between ISA and the
remote server.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://www.microsoft.com/isaserver
http://isaserver.org/Jim_Harrison
http://isatools.org
Read the help, books and articles!
----- Original Message -----
From: "William Robertson" <robertson.william@xxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, December 01, 2003 11:09
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Again, my ignorance is creeping through, but isn't my whole problem that
some clients are unable to access SSL sites, so if I enable an SSL proxy it
should fix the problem? Or am I missing the point...?
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 01 December 2003 21:06 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Don't use that.
This is only if you want to allow SSL proxy connections.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://www.microsoft.com/isaserver
http://isaserver.org/Jim_Harrison
http://isatools.org
Read the help, books and articles!
----- Original Message -----
From: "William Robertson" <robertson.william@xxxxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Monday, December 01, 2003 10:55
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
BTW Jim, I've also noticed that the "Enable SSL Listeners" on the Outgoing
WEB Requests tab is not selected, but when I try to enable it I am told that
I need to associate a certificate etc etc. Is this something that could be
causing my problem?
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 01 December 2003 20:28 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Yes; add "ReturnDeniedIfAuthenticated", DWORD = 1 to
HLKM\System\CurrentControlSet\w3svc\Parameters and restart the web proxy
service.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Mon, 1 Dec 2003 19:55:55 +0200
"William Robertson" <robertson.william@xxxxxxxxxxxxxx> wrote:
http://www.ISAserver.org
Hi Jim
My users get prompted for credentials if they try to access a site that is
not in their specific Destination Set. Do you believe that this has bearing
on why they cannot access the SSL sites?
Cheers
William R.
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 01 December 2003 19:20 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Here's another question:
If a user tries to go to a disallowed site, do they get reprompted or simply
denied?
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Mon, 1 Dec 2003 16:43:27 +0200
"William Robertson" <robertson.william@xxxxxxxxxxxxxx> wrote:
http://www.ISAserver.org
OK, I hear you. But if I tell you that the only difference between 2
usernames is that the one has an S&C rule with a limited destination set
(which includes the www.<domainname>.co.za that I am trying to access), and
the other has an S&C rule with an "Any Site" S&C Rule, then I'd would like
to hear your thoughts on this.
Tom's comment about users requiring "Full access" to the SSL server confuses
me, as the only Full Access that I can think of is to give these users an
"Any Site" S&C Rule as that is the only difference between these users...
but this doesn't make sense to me.
As you rightly pointed out, 12209 indicates that there was a Proxy Auth
failure, which is maybe what Tom was talking about regarding the Full Access
for SSL, but I'm damned if I know where to investigate this further...
If you have any pearls of wisdom I will gladly accept them :)
Cheers
William R.
-----Original Message-----
From: Jim Harrison [mailto:jim@xxxxxxxxxxxx]
Sent: 01 December 2003 16:01 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Hi William,
I haven't followed the thread as Tom was handling your issue.
If I can take you back in time, those log entries are pretty clear to me:
(first entry): the sc-result code is 10054. This is a Winsock response
meaning the connection, although initially accepted (listener responded),
the connection was dropped (reset) afterwards. Since this appears to be an
SSL connection (SSL-tunnel), there may have been a problem in the SSL
handshake.
(second entry): the sc-result code is 12209. This is a proxy auth failure.
Since there was no allowed traffic, there is no rule to quote.
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
On Mon, 1 Dec 2003 09:05:36 +0200
"William Robertson" <robertson.william@xxxxxxxxxxxxxx> wrote:
http://www.ISAserver.org
Jim, it looks like Tom is probably getting some well deserved rest as I
haven't seen a post from him for a few days now. Would you perhaps have any
insight for me into the matter Tom highlighted with regards my SSL issue?
See below for more info...
-----Original Message-----
From: William Robertson [mailto:robertson.william@xxxxxxxxxxxxxx]
Sent: 26 November 2003 08:00 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Hi Tom
When you say users require "Full Access" to the SSL Server, how would you
propose I implement this? I can think of no other way to do this other than
giving these users access to a S&C rule that allows ALL destinations... and
this doesn't make sense to me...?
Your thoughts?
-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx]
Sent: 26 November 2003 00:45 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites
http://www.ISAserver.org
Hi William,
Users must have full access to the server to which they create an SSL
connection because they cannot evaluate the path. If you have a path in
the rule allowing them access, then the connection request fails. Even
the dreaded /* can create this problem.
HTH,
Tom
-----Original Message-----
From: William Robertson [mailto:robertson.william@xxxxxxxxxxxxxx]
Sent: Tuesday, November 25, 2003 8:06 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Cannot access SSL sites
http://www.ISAserver.org
Hi there
I have some users who are "not allowed" to access the Internet. But
being the nice guy I am I managed to get management to approve the
"opening" of certain sites, such as the medical aid and pension scheme
websites. So to do this I created an S&C rule to allow the necessary
destination sets for all Domain Users. The trick with this is that the
Medical Aid website works just fine, but the Pension website doesn't. I
have now managed to figure out that the problem is related to the fact
that the Pension website is an HTTPS secure site. In fact, any HTTPS
site that I "open", the users keep getting prompted for their
credentials, but any other HTTP website works just fine.
Here are the excerpts from the WEB log (I've removed all the unnecessary
info):
Medical Aid
<clientIP>, WillTest, Mozilla/4.0 etc etc, 11/25/2003, 15:35:57,
w3proxy, <FIREWALL>, -, www.sovhealth.co.za, 196.37.176.210, 80, 2953,
455, 0, http, TCP, GET,
http://www.sovhealth.co.za/web/images/background.gif, image/gif, Inet,
10054, 0x801002, pWEB Protocols, scWEB - Free Sites
Pension Scheme
<clientIP>, WillTest, Mozilla/4.0 etc etc, 11/25/2003, 15:35:58,
w3proxy, <FIREWALL>, -, www.mebmac.co.za, -, 443, 0, 0, 0, SSL-tunnel,
TCP, -, www.mebmac.co.za:443, -, Inet, 12209, 0x0, pWEB Protocols, -
As you can see, the Pension website doesn't find a matching Rule 2 (Site
& Content Rule), and this I cannot understand. Is it possible to declare
HTTP and HTTPS website distinctions in the Destination Sets?
Cheers
William R.
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