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Have you re-run the RRAS wizard?
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VPN was functioning correctly for 3 years, all of a sudden people cannot connect. &nbsp;In the office vpn works. I swapped the router checked 1723 on canyouseeme all good there, I even tried a second nic to seperate internal network from external network still no joy. &nbsp;Checked dns connection on client vpn and it was correct also tried by IP still nothing. &nbsp;Looking for ideas.....
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VPN was functioning correctly for 3 years, all of a sudden people cannot connect.  In the office vpn works. I swapped the router checked 1723 on canyouseeme all good there, I even tried a second nic to seperate internal network from external network still no joy.  Checked dns connection on client vpn and it was correct also tried by IP still nothing.  Looking for ideas.....

SBS2003 VPN will not connect externally but will internally

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).