Overview:
The Link2Exchange VPN must be able to access the Internet on certain UDP ports to create a secure tunnel between your PC and our servers.
The actual procedure for opening up ports is listed below.
(If you want to select a destination for these ports to ensure these ports are only open to the Link2Exchange VPN server, it's 66.211.136.62.)
Ports required:
Protocol: UDP
Port: 500
Direction: Send/Receive
Protocol: UDP
Port: 4500
Direction: Send/Receive
Protocol: UDP
Port: 10000
Direction: Send/Receive
Once you've reconfigured your firewall to allow those ports, you should be able to connect your VPN tunnel.
Procedure:
Create the Protocol Definitions
Create the new custom protocols to enable the transparent tunneling feature. To do so, follow these steps:
- Start the ISA Management snap-in. To do so, click Start, point to Programs, point to Microsoft ISA Server, and then click ISA Management.
- Under Policy Elements, locate the Protocol Definitions container.
- Right-click Protocol Definitions, point to New, and then click Definition.
- In the Protocol definition name box, type a descriptive name for the definition (for example, type Port 500 UDP Send Receive), and then click Next.
- In the Port number box, type 500. In the Protocol type list, click UDP. In the Direction list, click Send Receive (do not click Receive Send), and then click Next.
- Under Do you want to use Secondary connections?, click No, and then click Next.
- Confirm your settings, and then click Finish.
- In the left pane, right-click Protocol Definitions, point to New, and then click Definition.
- In the Protocol definition name box, type a descriptive name for the definition (for example, type Port 4500 UDP Send Receive), and then click Next.
- In the Port number box, type 4500. In the Protocol type list, click UDP. In the Direction list, click Send Receive (do not click Receive Send), and then click Next.
- Under Do you want to use Secondary connections?, click No, and then click Next.
- Confirm your settings, and then click Finish.
- In the left pane, right-click Protocol Definitions, point to New, and then click Definition.
- In the Protocol definition name box, type a descriptive name for the definition (for example, type Port 10000 UDP Send Receive), and then click Next.
- In the Port number box, type 10000. In the Protocol type list, click UDP. In the Direction list, click Send Receive (do not click Receive Send), and then click Next.
- Under Do you want to use Secondary connections?, click No, and then click Next.
- Confirm your settings, and then click Finish.
The new custom protocols are listed in the right pane under Available Protocols.
Create a Protocol Rule
Create a protocol rule to allow access using the new custom protocols that you created. To do so, follow these steps:
- Start the ISA Management snap-in. To do this, click Start, point to Programs, point to Microsoft ISA Server, and then click ISA Management.
- Under Access Policy, locate to the Protocol Rules container.
- Right-click Protocol Rules, point to New, and then click Rule.
- In the Protocol rule name box, type a name for the rule (for example, type Allow IPSec VPN Client), and then click Next.
- Click Allow, and then click Next.
- In the Apply this rule to list, click Selected protocols.
- In the Protocols list, click to select the check boxes that correspond to the three custom protocols that you created earlier, and then click Next.
- In the Use this schedule list, click the schedule that you want to use when allowing these protocols (for example, click Work hours), and then click Next.
- Under Apply the rule to requests from, click Any request (unless you want to restrict these protocols to certain client address sets), and then click Next.
- Confirm the configuration selections, and then click Finish.
The new protocol rule is listed under Available Protocol Rules in the right pane.
Once you see the new protocol rule, you've completed the configuration of your ISA Server. You should now be able to connect to Link2Exchange via our VPN client.
Keywords:
vpn ports required firewall
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