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"Failed Connection Attempt"
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"Failed Connection Attempt" - 17.Jul.2008 11:02:18 PM
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sander99
Posts: 13
Joined: 17.Jul.2008
Status: offline
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I have some clients that do not specify a proxy server in the browser settings (all checkboxes are blank). These clients generate the "failed conenction attempt" error. As soon as I configure a proxy in the client's browser settings everything works. However, for the corporate laptop I would not like to change the browser setting.
It seems that the reason for my issue that none of the rules seems to apply.
Is there a solution? For some reason this setup used to work with the WinProxy product.
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RE: "Failed Connection Attempt" - 19.Jul.2008 11:44:25 AM
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tshinder
Posts: 47181
Joined: 10.Jan.2001
From: Texas
Status: online
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Remember that the ISA firewall is a firewall, so you need to configure the firewall to allow the connections you want through the firewall.
What rules have you configured on the firewall to allow the outbound connections?
Tom
_____________________________
Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/
GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8
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RE: "Failed Connection Attempt" - 19.Jul.2008 12:08:08 PM
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sander99
Posts: 13
Joined: 17.Jul.2008
Status: offline
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At this point I have a simple rule that allows all internal network traffic to go to the external network, through all ports, for all users (I'm not using authentication).
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RE: "Failed Connection Attempt" - 20.Jul.2008 10:47:06 AM
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sander99
Posts: 13
Joined: 17.Jul.2008
Status: offline
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Yes, the default gateway is the IP of the box with ISA. The DHCP server (on the smae box) has a gateway entry that gets distributed.
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RE: "Failed Connection Attempt" - 21.Jul.2008 7:12:34 PM
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sander99
Posts: 13
Joined: 17.Jul.2008
Status: offline
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I have a DNS (Windoes) server on the same box.
To make things more complicated, one client works in the meantime again...
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RE: "Failed Connection Attempt" - 22.Jul.2008 11:57:24 AM
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sander99
Posts: 13
Joined: 17.Jul.2008
Status: offline
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Yes, that part is working. The browse seems even to find the the ISA sever proxy as it serves up an ISA generated web page. I suspect that an ISA rule doesn't trigger, doesn't recognize the client.
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RE: "Failed Connection Attempt" - 23.Jul.2008 8:50:43 AM
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tshinder
Posts: 47181
Joined: 10.Jan.2001
From: Texas
Status: online
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Check the firewall logs on the firewall and see what is happening to the connection attempts through the firewall when the clients can't get past the firewall.
HTH,
Tom
_____________________________
Thomas W Shinder, M.D.
Sr. Consultant/Technical Writer
Prowess Consulting http://www.prowessconsulting.com/
Blog: http://blogs.isaserver.org/shinder/
GET THE NEW ISA 2006 Book!: http://tinyurl.com/2gpoo8
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