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Chapter 6 VPN configuration
Chapter contents
Introduction..........................................................................................................................................................68
Authentication ................................................................................................................................................68
Encryption ......................................................................................................................................................68
Transport and tunnel modes ...........................................................................................................................69
VPN configuration task list ...................................................................................................................................69
Creating an IPsec transformation profile .........................................................................................................69
Creating an IPsec policy profile .......................................................................................................................70
Creating/modifying an outgoing ACL profile for IPsec ...................................................................................72
Configuration of an IP interface and the IP router for IPsec ............................................................................73
Displaying IPsec configuration information ....................................................................................................73
Debugging IPsec .............................................................................................................................................74
Sample configurations ...........................................................................................................................................75
IPsec tunnel, DES encryption .........................................................................................................................75
OnSite configuration .................................................................................................................................75
Cisco router configuration ........................................................................................................................76
IPsec tunnel, AES encryption at 256 bit key length, AH authentication with HMAC-SHA1-96 ....................76
OnSite configuration .................................................................................................................................76
Cisco router configuration ........................................................................................................................77
IPsec tunnel, 3DES encryption at 192 bit key length, ESP authentication with HMAC-MD5-96 ..................77
OnSite configuration .................................................................................................................................77
Cisco router configuration ........................................................................................................................77