# Материалы по теме 64

Ссылки на сайт [www.cisco.com:\\](http://www.cisco.com:\\)
<http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_ikevpn/configuration/15-mt/sec-ike-for-ipsec-vpns-15-mt-book/sec-key-exch-ipsec.html>\
<http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnips/configuration/15-mt/sec-sec-for-vpns-w-ipsec-15-mt-book/sec-ipsec-virt-tunnl.html>\
<http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_vpnav/configuration/15-mt/sec-vpn-availability-15-mt-book/sec-ipsec-pref-peer.html>

Как найти документ:\
Support Home → ProductsIOS and NX-OS SoftwareIOS → IOS Software Release 15M\&T→ IOS 15.5M\&T → Configuration Guides →Security, Services, and VPN

Ссылки на книгу/главу:\
CCIE Routing and Switching v5.0 Official Cert Guide, Volume 2, Security

Ссылка на сайт [www.xgu.ru:\\](http://www.xgu.ru:\\)
<http://xgu.ru/wiki/IPsec_%D0%B2_Cisco#GRE_.D0.B8_IPsec>