![Security for VPNs with IPsec Configuration Guide, Cisco IOS Release 15M&T - L2TP IPsec Support for NAT and PAT Windows Clients [Support] - Cisco Security for VPNs with IPsec Configuration Guide, Cisco IOS Release 15M&T - L2TP IPsec Support for NAT and PAT Windows Clients [Support] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/100001-200000/130001-140000/135001-136000/135045.ps/_jcr_content/renditions/135045.jpg)
Security for VPNs with IPsec Configuration Guide, Cisco IOS Release 15M&T - L2TP IPsec Support for NAT and PAT Windows Clients [Support] - Cisco
Example for Configuring the Headquarters (Cisco Router) to Manage Branches Using Efficient VPN and Establishing IPSec Tunnels - AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 CLI-based Typical Configuration Examples -
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