Q.101179: Which of the following are features of IPsec
IPSec Overview Part Two: Modes and Transforms > Tunnel and IPSec can be run in either tunnel mode or transport mode. Each of these modes has its own particular uses and care should be taken to ensure that the correct one is selected for the solution: Tunnel mode is most commonly used between gateways, or at an end-station to a gateway, the gateway acting as a proxy for the hosts behind it. encryption - When do I use IPsec tunnel mode or transport Tunnel mode is most commonly used between gateways, or at an end-station to a gateway, the gateway acting as a proxy for the hosts behind it. Transport mode is used between end-stations or between an end-station and a gateway, if the gateway is being treated as a host—for example, an encrypted Telnet session from a workstation to a router, in How IPsec works, why we need it, and its biggest drawbacks
OSPF routing between 3 sites over IPSec - Cisco Community
IKE and IPSec debugs tend to get cryptic, TAC will very often use them to understand where a problem with IPSec VPN tunnel establishment is located. 3. Scenario . Aggressive mode is typically used in case of EZVPN, both software (Cisco VPN client) and hardware clients (ASA 5505 or IOS routers), but only when using pre shared key (PSK).
How IPsec works, why we need it, and its biggest drawbacks
Nov 15, 2016 Understanding IOS IPSec and IKE debugs - Cisco Community mode transport. crypto ipsec profile PRO. set transform-set TRA. interface tunnel23. tunnel mode ipsec ipv6. tunnel protection ipsec profile PRO. 4.1.9 Quick Mode Message 3 (QM3) - phase two should be complete and tunnel interface up. *Sep 21 08:33:43.437: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel23, changed state to up