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Thank you for the great explanation. &nbsp;
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I am on an SBS 2003 Network using ISA 2004 and my machine is using the Firewall Client. &nbsp;<br />
<br />
I recently got a virtual server at softlayer and I can open a vpn connection to the softlayer network and ping my server however I cannot connect using SSH with PuTTY. &nbsp;<br />
<br />
I can disable the firewall client temporarily and SSH to the server and then re-enable the firewall client and my SSH connection will stay up.<br />
<br />
Does anyone have any ideas about why the firewall client / ISA Server is not allowing the SSH connection? &nbsp;<br />
<br />
Also, the ISA logs do not show any blocked connections. <br />
<br />
Thanks in advance,<br />
<br />
David
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I am on an SBS 2003 Network using ISA 2004 and my machine is using the Firewall Client.  

I recently got a virtual server at softlayer and I can open a vpn connection to the softlayer network and ping my server however I cannot connect using SSH with PuTTY.  

I can disable the firewall client temporarily and SSH to the server and then re-enable the firewall client and my SSH connection will stay up.

Does anyone have any ideas about why the firewall client / ISA Server is not allowing the SSH connection?  

Also, the ISA logs do not show any blocked connections. 

Thanks in advance,

David

Cannot SSH to server over PPTP from within ISA 2004 (SBS2k3) network using firewall client??

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.

Microsoft Forefront ISA Server

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.