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Summary
This step-by-step article describes how to enable a Cisco Systems virtual private network (VPN) client computer using the IPSec protocol, on the internal network, to connect to an external Cisco VPN Concentrator using the 'transparent tunneling' feature through Microsoft Internet Security and Acceleration Server 2000.
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Provide Support for the Cisco VPN Client
The client VPN service uses the L2TP tunneling protocol and can be deployed without any additional software on PCs, Macs, iOS devices, and Android devices, since all of these operating systems natively support L2TP VPN connections. The EOL designation for the Cisco VPN Client v5.0.07.0440-the most recent and stable version-means that newer operating systems, like Windows 10, are not officially supported by the client.
In most cases, IPSec VPN traffic does not pass through ISA Server 2000. However, Cisco Concentrator 3300, with the latest firmware updates, uses 'transparent tunneling' that uses User Datagram Protocol (UDP) ports 500, 4500, and 10000 to communicate securely between VPN clients and concentrators.
To provide support for this configuration, create the following protocol definitions:
Note The client computer must be configured as a SecureNat client.
To provide support for this configuration, create the following protocol definitions:
Note The client computer must be configured as a SecureNat client.
Port number: 500
Protocol type: UDP
Direction: Send Receive
Port number: 4500
Protocol type: UDP
Direction: Send Receive
Port number: 10000
Protocol type: UDP
Direction: Send Recieve
By creating these protocol definitions, you enable the SecureNat client to connect to the Cisco VPN server through ISA Server as all traffic is passed as UDP traffic. According to the Cisco Transparent tunneling technology, this traffic can traverse Network Address Translation (NAT) firewalls.
Note You must make sure that your Access Policy permits these three custom protocols.
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Protocol type: UDP
Direction: Send Receive
Port number: 4500
Protocol type: UDP
Direction: Send Receive
Port number: 10000
Protocol type: UDP
Direction: Send Recieve
By creating these protocol definitions, you enable the SecureNat client to connect to the Cisco VPN server through ISA Server as all traffic is passed as UDP traffic. According to the Cisco Transparent tunneling technology, this traffic can traverse Network Address Translation (NAT) firewalls.
Note You must make sure that your Access Policy permits these three custom protocols.
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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
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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
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Finish. - Repeat the steps above to create the protocol using a value of 10000 in steps 9 and 10. Premiere pro mac.
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The new custom protocols are listed in the right pane under
Available Protocols.
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Available Protocols.
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Cisco Vpn Ports To Open
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 Cisco 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.
Note After you perform the steps to add UDP Port 10000 as a protocol definition, you may also have to add UDP port 20000 to be able to work with some of the newer Cisco VPN Concentrators.
Note This article is designed for SecureNAT clients. You must remove the ISA Firewall client software.
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Note After you perform the steps to add UDP Port 10000 as a protocol definition, you may also have to add UDP port 20000 to be able to work with some of the newer Cisco VPN Concentrators.
Note This article is designed for SecureNAT clients. You must remove the ISA Firewall client software.
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![Cisco Vpn Client Port Cisco Vpn Client Port](/uploads/1/1/7/8/117858429/322941106.jpg)
References
For information about how to obtain ISA Server 2000 Service Pack 1 (SP1), visit the following Microsoft Web site:
![Cisco Vpn Client Port Cisco Vpn Client Port](/uploads/1/1/7/8/117858429/268542673.png)
http://technet.microsoft.com/en-us/library/cc750281.aspxFor additional help and support with Microsoft Internet Security and Acceleration (ISA) Server, visit the following Microsoft Web site: Mayuri telugu movie free download full.
http://www.microsoft.com/isaserverFor more information about ISA Server, visit the following non-Microsoft Web site:
http://www.isaserver.orgFor additional information about Cisco Systems VPN devices, visit the following Cisco Web site:
http://www.cisco.com/warp/public/44/jump/vpn_devices.shtml Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.
The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
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The third-party products that are discussed in this article are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
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