Update vpn-gateway-about-vpn-devices.md

Author: cherylmc

articles/vpn-gateway/vpn-gateway-about-vpn-devices.md

@@ -36,7 +36,7 @@ To help configure your VPN device, refer to the links that correspond to the app
 | --- | --- | ---  | --- | --- |
 | A10 Networks, Inc. |Thunder CFW           |ACOS 4.1.1             |Not compatible  |[Configuration guide](https://www.a10networks.com/wp-content/uploads/A10-DG-16161-EN.pdf)|
 | AhnLab | TrusGuard | TG 2.7.6<br>TG 3.5.x | Not tested | [Configuration guide](https://help.ahnlab.com/trusguard/cloud/azure/install/en_us/start.htm)
-| Allied Telesis     |AR Series VPN Routers |AR-Series 5.4.7+               | [Configuration guide](https://www.alliedtelesis.com/documents/how-to/configure/site-to-site-vpn-between-azure-and-ar-series-router) |[Configuration guide](https://www.alliedtelesis.com/documents/how-to/configure/site-to-site-vpn-between-azure-and-ar-series-router)|
+| Allied Telesis     |AR Series VPN Routers |AR-Series 5.4.7+               | [Configuration guide](https://www.alliedtelesis.com/configure/site-to-site-vpn-between-azure-and-ar-series-router) |[Configuration guide](https://www.alliedtelesis.com/configure/site-to-site-vpn-between-azure-and-ar-series-router)|
 | Arista | CloudEOS Router | vEOS 4.24.0FX | Not tested | [Configuration guide](https://www.arista.com/en/cg-veos-router/veos-router-cloudeos-ipsec-connectivity-to-azure-virtual-network-gateway) |
 | Barracuda Networks, Inc. |Barracuda CloudGen Firewall |PolicyBased: 5.4.3<br>RouteBased: 6.2.0 |[Configuration guide](https://campus.barracuda.com/product/cloudgenfirewall/doc/79462887/how-to-configure-an-ikev1-ipsec-site-to-site-vpn-to-the-static-microsoft-azure-vpn-gateway/) |[Configuration guide](https://campus.barracuda.com/product/cloudgenfirewall/doc/79462889/how-to-configure-bgp-over-ikev2-ipsec-site-to-site-vpn-to-an-azure-vpn-gateway/) |
 | Check Point |Security Gateway |R80.10 |[Configuration guide](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk101275) |[Configuration guide](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk101275) |