RE: Cannot access SSL sites

  • From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Tue, 2 Dec 2003 05:55:12 -0600

Hi Mark,

The ISA firewall can't determine that path after the tunnel is created.
So, if you don't allow access to the entire server (which means NOT
entering a path), then the request will be denied. Even though /*
putatively means everything on the server, the ISA firewall doesn't
interpret this way after the SSL tunnel is established.

HTH,
Tom 

-----Original Message-----
From: Mark Hippenstiel [mailto:M.Hippenstiel@xxxxxxxxxxxx] 
Sent: Tuesday, December 02, 2003 4:20 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Cannot access SSL sites

http://www.ISAserver.org

Jim could you elaborate a bit on the /* problem? Thanks.

> -----Original Message-----
> From: Mark Hippenstiel
> Posted At: Tuesday, December 02, 2003 10:27 AM Posted To: 
> www.isaserver.org
> Conversation: [isalist] RE: Cannot access SSL sites
> Subject: [isalist] RE: Cannot access SSL sites
> 
> 
> http://www.ISAserver.org
> 
> Roentgen eyes ;)
> 
> But no, I was just explaining what Tom had said.
> 
> > -----Original Message-----
> > From: Jim Harrison [mailto:jim@xxxxxxxxxxxx] Posted At: Tuesday, 
> > December 02, 2003 8:09 AM Posted To: www.isaserver.org
> > Conversation: [isalist] RE: Cannot access SSL sites
> > Subject: [isalist] RE: Cannot access SSL sites
> > 
> > 
> > http://www.ISAserver.org
> > 
> > Did I miss the ISAInfo on this one?
> > Where did you (Mark) see the /* in the path?
> > 
> >  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 21:38
> > Subject: [isalist] RE: Cannot access SSL sites
> > 
> > 
> > http://www.ISAserver.org
> > 
> > Kerplunk!!!
> > <sheepish grin as I haul myself back into my chair>
> > 
> > Thanks Mark, that was exactly it. My "limited" destination sets all 
> > had the "/*" subpath included as I naively thought that this would 
> > ensure that ALL the possible paths on that domain would then be 
> > allowed.
> > Silly me!!! Looks
> > like it decided to actually restrict as opposed to allow all paths.
> > 
> > Would this imply that all destination sets that I use should NOT use

> > the "/*" option in the subpath? It doesn't make sense to me but hey,

> > I'm still learning... :)
> > 
> > Cheers
> > William R.
> > 
> > -----Original Message-----
> > From: Mark Hippenstiel [mailto:M.Hippenstiel@xxxxxxxxxxxx]
> > Sent: 02 December 2003 02:41 AM
> > To: [ISAserver.org Discussion List]
> > Subject: [isalist] RE: Cannot access SSL sites
> > 
> > http://www.ISAserver.org
> > 
> > Just dropping in... I think Tom meant that the s&c rule should not 
> > contain any specifics, just the plain target domain name,
> "not even a
> > /*" to cite him here. That would mean "full access" to the site 
> > defined in the rule.
> > 
> > Mark
> > 
> > > -----Original Message-----
> > > From: William Robertson [mailto:robertson.william@xxxxxxxxxxxxxx]
> > > Posted At: Monday, December 01, 2003 3:43 PM Posted To: 
> > > www.isaserver.org
> > > Conversation: [isalist] RE: Cannot access SSL sites
> > > Subject: [isalist] RE: Cannot access SSL sites
> > >
> > >
> > > 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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