As shown in Figure 1, configure an IKE-based IPsec tunnel between Device A and Device B to secure the communication between subnet 10.1.1.0/24 and subnet 10.1.2.0/24.
Configure Device A and Device B to use the default IKEv2 proposal and the default IKEv2 policy in IKEv2 negotiation to set up IPsec SAs.
Configure the two devices to use the preshared key authentication method in IKEv2 negotiation.
This configuration example was created and verified on E8371 of the F5000-AI160 device.
1. Assign IP addresses to interfaces:
# Assign an IP address to interface GigabitEthernet 1/0/1.
<DeviceA> system-view
[DeviceA] interface gigabitethernet 1/0/1
[DeviceA-GigabitEthernet1/0/1] ip address 1.1.1.1 255.255.0.0
[DeviceA-GigabitEthernet1/0/1] quit
# Assign IP addresses to other interfaces in the same way. (Details not shown.)
2. Configure settings for routing.
This example configures static routes, and the next hop in the routes is 1.1.1.2.
[DeviceA] ip route-static 10.1.2.0 24 1.1.1.2
[DeviceA] ip route-static 2.2.2.2 16 1.1.1.2
3. Add interfaces to security zones.
[DeviceA] security-zone name trust
[DeviceA-security-zone-Trust] import interface gigabitethernet 1/0/2
[DeviceA-security-zone-Trust] quit
[DeviceA] security-zone name untrust
[DeviceA-security-zone-Untrust] import interface gigabitethernet 1/0/1
[DeviceA-security-zone-Untrust] quit
4. Configure a security policy:
Configure rules to permit traffic between the Untrust and Local security zones, so the devices can set up an IPsec tunnel:
# Configure a rule named ipseclocalout to allow Device A to send IPsec negotiation packets to Device B.
[DeviceA] security-policy ip
[DeviceA-security-policy-ip] rule name ipseclocalout
[DeviceA-security-policy-ip-1-ipseclocalout] source-zone local
[DeviceA-security-policy-ip-1-ipseclocalout] destination-zone untrust
[DeviceA-security-policy-ip-1-ipseclocalout] source-ip-host 1.1.1.1
[DeviceA-security-policy-ip-1-ipseclocalout] destination-ip-host 2.2.2.2
[DeviceA-security-policy-ip-1-ipseclocalout] action pass
[DeviceA-security-policy-ip-1-ipseclocalout] quit
# Configure a rule named ipseclocalin to allow Device A to receive the IPsec negotiation packets sent from Device B.
[DeviceA-security-policy-ip] rule name ipseclocalin
[DeviceA-security-policy-ip-2-ipseclocalin] source-zone untrust
[DeviceA-security-policy-ip-2-ipseclocalin] destination-zone local
[DeviceA-security-policy-ip-2-ipseclocalin] source-ip-host 2.2.2.2
[DeviceA-security-policy-ip-2-ipseclocalin] destination-ip-host 1.1.1.1
[DeviceA-security-policy-ip-2-ipseclocalin] action pass
[DeviceA-security-policy-ip-2-ipseclocalin] quit
Configure rules to permit the traffic between Host A and Host B:
# Configure a rule named trust-untrust to permit the packets from Host A to Host B.
[DeviceA-security-policy-ip] rule name trust-untrust
[DeviceA-security-policy-ip-3-trust-untrust] source-zone trust
[DeviceA-security-policy-ip-3-trust-untrust] destination-zone untrust
[DeviceA-security-policy-ip-3-trust-untrust] source-ip-subnet 10.1.1.0 24
[DeviceA-security-policy-ip-3-trust-untrust] destination-ip-subnet 10.1.2.0 24
[DeviceA-security-policy-ip-3-trust-untrust] action pass
[DeviceA-security-policy-ip-3-trust-untrust] quit
# Configure a rule named untrust-trust to permit the packets from Host B to Host A.
[DeviceA-security-policy-ip] rule name untrust-trust
[DeviceA-security-policy-ip-4-untrust-trust] source-zone untrust
[DeviceA-security-policy-ip-4-untrust-trust] destination-zone trust
[DeviceA-security-policy-ip-4-untrust-trust] source-ip-subnet 10.1.2.0 24
[DeviceA-security-policy-ip-4-untrust-trust] destination-ip-subnet 10.1.1.0 24
[DeviceA-security-policy-ip-4-untrust-trust] action pass
[DeviceA-security-policy-ip-4-untrust-trust] quit
[DeviceA-security-policy-ip] quit
5. Define the data flows to be protected:
# Configure IPv4 advanced ACL 3101 to identify traffic from subnet 10.1.1.0/24 to subnet 10.1.2.0/24.
[DeviceA] acl advanced 3101
[DeviceA-acl-ipv4-adv-3101] rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
[DeviceA-acl-ipv4-adv-3101] quit
6. Configure an IPsec transform set to specify the packet encapsulation mode, security protocols, and algorithms.
The IPsec transform set settings at both sides of the IPsec tunnel must be the same.
[DeviceA] ipsec transform-set tran1
[DeviceA-ipsec-transform-set-tran1] encapsulation-mode tunnel
[DeviceA-ipsec-transform-set-tran1] protocol esp
[DeviceA-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc
[DeviceA-ipsec-transform-set-tran1] esp authentication-algorithm sha1
[DeviceA-ipsec-transform-set-tran1] quit
7. Configure an IKE keychain to specify the key information used for IKE communication.
The preshared key used by both sides of the communication must be the same.
[DeviceA] ikev2 keychain keychain1
[DeviceA-ikev2-keychain-keychain1] peer peer1
[DeviceA-ikev2-keychain-keychain1-peer-peer1] address 2.2.2.2 16
[DeviceA-ikev2-keychain-keychain1-peer-peer1] identity address 2.2.2.2
[DeviceA-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde
[DeviceA-ikev2-keychain-keychain1-peer-peer1] quit
[DeviceA-ikev2-keychain-keychain1] quit
8. Configure an IKEv2 profile to specify the security parameters used for setting up IKE SAs.
[DeviceA] ikev2 profile profile1
[DeviceA-ikev2-profile-profile1] authentication-method local pre-share
[DeviceA-ikev2-profile-profile1] authentication-method remote pre-share
[DeviceA-ikev2-profile-profile1] keychain keychain1
[DeviceA-ikev2-profile-profile1] match remote identity address 2.2.2.2 255.255.0.0
[DeviceA-ikev2-profile-profile1] quit
9. Configure an IPsec policy to establish an IPsec tunnel to protect the specified data.
[DeviceA] ipsec policy map1 10 isakmp
[DeviceA-ipsec-policy-isakmp-map1-10] remote-address 2.2.2.2
[DeviceA-ipsec-policy-isakmp-map1-10] security acl 3101
[DeviceA-ipsec-policy-isakmp-map1-10] transform-set tran1
[DeviceA-ipsec-policy-isakmp-map1-10] ikev2-profile profile1
[DeviceA-ipsec-policy-isakmp-map1-10] quit
10. Apply the IPsec policy to GigabitEthernet 1/0/1 to protect the traffic on the interface.
[DeviceA] interface gigabitethernet 1/0/1
[DeviceA-GigabitEthernet1/0/1] ipsec apply policy map1
[DeviceA-GigabitEthernet1/0/1] quit
1. Assign IP addresses to interfaces:
# Assign an IP address to interface GigabitEthernet 1/0/1.
<DeviceB> system-view
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] ip address 2.2.2.2 255.255.0.0
[DeviceB-GigabitEthernet1/0/1] quit
# Assign IP addresses to other interfaces in the same way. (Details not shown.)
2. Configure settings for routing.
This example configures static routes, and the next hop in the routes is 2.2.2.1.
[DeviceB] ip route-static 10.1.1.0 24 2.2.2.1
[DeviceB] ip route-static 1.1.1.1 16 2.2.2.1
3. Add interfaces to security zones.
[DeviceB] security-zone name trust
[DeviceB-security-zone-Trust] import interface gigabitethernet 1/0/2
[DeviceB-security-zone-Trust] quit
[DeviceB] security-zone name untrust
[DeviceB-security-zone-Untrust] import interface gigabitethernet 1/0/1
[DeviceB-security-zone-Untrust] quit
4. Configure a security policy:
Configure rules to permit traffic between the Untrust and Local security zones, so the devices can set up an IPsec tunnel:
# Configure a rule named ipseclocalout to allow Device B to send IPsec negotiation packets to Device A.
[DeviceB] security-policy ip
[DeviceB-security-policy-ip] rule name ipseclocalout
[DeviceB-security-policy-ip-1-ipseclocalout] source-zone local
[DeviceB-security-policy-ip-1-ipseclocalout] destination-zone untrust
[DeviceB-security-policy-ip-1-ipseclocalout] source-ip-host 2.2.2.2
[DeviceB-security-policy-ip-1-ipseclocalout] destination-ip-host 1.1.1.1
[DeviceB-security-policy-ip-1-ipseclocalout] action pass
[DeviceB-security-policy-ip-1-ipseclocalout] quit
# Configure a rule named ipseclocalin to allow Device B to receive the IPsec negotiation packets sent from Device A.
[DeviceB-security-policy-ip] rule name ipseclocalin
[DeviceB-security-policy-ip-2-ipseclocalin] source-zone untrust
[DeviceB-security-policy-ip-2-ipseclocalin] destination-zone local
[DeviceB-security-policy-ip-2-ipseclocalin] source-ip-host 1.1.1.1
[DeviceB-security-policy-ip-2-ipseclocalin] destination-ip-host 2.2.2.2
[DeviceB-security-policy-ip-2-ipseclocalin] action pass
[DeviceB-security-policy-ip-2-ipseclocalin] quit
Configure rules to permit the traffic between Host B and Host A:
# Configure a rule named trust-untrust to permit the packets from Host B to Host A.
[DeviceB-security-policy-ip] rule name trust-untrust
[DeviceB-security-policy-ip-3-trust-untrust] source-zone trust
[DeviceB-security-policy-ip-3-trust-untrust] destination-zone untrust
[DeviceB-security-policy-ip-3-trust-untrust] source-ip-subnet 10.1.2.0 24
[DeviceB-security-policy-ip-3-trust-untrust] destination-ip-subnet 10.1.1.0 24
[DeviceB-security-policy-ip-3-trust-untrust] action pass
[DeviceB-security-policy-ip-3-trust-untrust] quit
# Configure a rule named untrust-trust to permit the packets from Host A to Host B.
[DeviceB-security-policy-ip] rule name untrust-trust
[DeviceB-security-policy-ip-4-untrust-trust] source-zone untrust
[DeviceB-security-policy-ip-4-untrust-trust] destination-zone trust
[DeviceB-security-policy-ip-4-untrust-trust] source-ip-subnet 10.1.1.0 24
[DeviceB-security-policy-ip-4-untrust-trust] destination-ip-subnet 10.1.2.0 24
[DeviceB-security-policy-ip-4-untrust-trust] action pass
[DeviceB-security-policy-ip-4-untrust-trust] quit
[DeviceB-security-policy-ip] quit
5. Define the data flows to be protected:
# Configure IPv4 advanced ACL 3101 to identify traffic from subnet 10.1.2.0/24 to subnet 10.1.1.0/24.
[DeviceB] acl advanced 3101
[DeviceB-acl-ipv4-adv-3101] rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
[DeviceB-acl-ipv4-adv-3101] quit
6. Configure an IPsec transform set to specify the packet encapsulation mode, security protocols, and algorithms.
The IPsec transform set settings at both sides of the IPsec tunnel must be the same.
[DeviceB] ipsec transform-set tran1
[DeviceB-ipsec-transform-set-tran1] encapsulation-mode tunnel
[DeviceB-ipsec-transform-set-tran1] protocol esp
[DeviceB-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc
[DeviceB-ipsec-transform-set-tran1] esp authentication-algorithm sha1
[DeviceB-ipsec-transform-set-tran1] quit
7. Configure an IKE keychain to specify the key information used for IKE communication.
The preshared key used by both sides of the communication must be the same.
[DeviceB] ikev2 keychain keychain1
[DeviceB-ikev2-keychain-keychain1] peer peer1
[DeviceB-ikev2-keychain-keychain1-peer-peer1] address 1.1.1.1 16
[DeviceB-ikev2-keychain-keychain1-peer-peer1] identity address 1.1.1.1
[DeviceB-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde
[DeviceB-ikev2-keychain-keychain1-peer-peer1] quit
[DeviceB-ikev2-keychain-keychain1] quit
8. Configure an IKEv2 profile to specify the security parameters used for setting up IKE SAs.
[DeviceB] ikev2 profile profile1
[DeviceB-ikev2-profile-profile1] authentication-method local pre-share
[DeviceB-ikev2-profile-profile1] authentication-method remote pre-share
[DeviceB-ikev2-profile-profile1] keychain keychain1
[DeviceA-ikev2-profile-profile1] match remote identity address 1.1.1.1 255.255.0.0
[DeviceA-ikev2-profile-profile1] quit
9. Configure an IPsec policy to establish an IPsec tunnel to protect the specified data.
[DeviceB] ipsec policy use1 10 isakmp
[DeviceB-ipsec-policy-isakmp-use1-10] remote-address 1.1.1.1
[DeviceB-ipsec-policy-isakmp-use1-10] security acl 3101
[DeviceB-ipsec-policy-isakmp-use1-10] transform-set tran1
[DeviceB-ipsec-policy-isakmp-use1-10] ikev2-profile profile1
[DeviceB-ipsec-policy-isakmp-use1-10] quit
10. Apply the IPsec policy to GigabitEthernet 1/0/1 to protect the traffic on the interface.
[DeviceB] interface gigabitethernet 1/0/1
[DeviceB-GigabitEthernet1/0/1] ipsec apply policy use1
[DeviceB-GigabitEthernet1/0/1] quit
# Initiate a connection from subnet 10.1.1.0/24 to subnet 10.1.2.0/24 to trigger IKEv2 negotiation. After IPsec SAs are successfully negotiated by IKEv2, traffic between the two subnets is IPsec-protected.
# Display the IKEv2 proposal and IKEv2 policy on Device A.
[DeviceA] display ikev2 proposal
IKEv2 proposal : default
Encryption: AES-CBC-128 3DES-CBC
Integrity: SHA1 MD5
PRF: SHA1 MD5
DH Group: MODP1536/Group5 MODP1024/Group2
[DeviceA] display ikev2 policy
IKEv2 policy : default
Match VRF : any
Proposal: default
# Display the IKEv2 SA on Device A.
[DeviceA] display ikev2 sa
Tunnel ID Local Remote Status
---------------------------------------------------------------------------
1 1.1.1.1/500 2.2.2.2/500 EST
Status:
IN-NEGO: Negotiating, EST: Established, DEL:Deleting
# Display the IPsec SAs on Device A.
[DeviceA] display ipsec sa
-------------------------------
Interface: GigabitEthernet1/0/1
-------------------------------
-----------------------------
IPsec policy: map1
Sequence number: 10
Mode: ISAKMP
-----------------------------
Tunnel id: 0
Encapsulation mode: tunnel
Perfect Forward Secrecy:
Inside VPN:
Extended Sequence Numbers enable: N
Traffic Flow Confidentiality enable: N
Path MTU: 1456
Tunnel:
local address/port: 1.1.1.1/500
remote address/port: 2.2.2.2/500
Flow:
sour addr: 10.1.1.0/255.255.255.0 port: 0 protocol: ip
dest addr: 10.1.2.0/255.255.255.0 port: 0 protocol: ip
[Inbound ESP SAs]
SPI: 3264152513 (0xc28f03c1)
Connection ID: 141733920771
Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843200/3484
Max received sequence-number:
Anti-replay check enable: Y
Anti-replay window size: 64
UDP encapsulation used for NAT traversal: N
Status: Active
[Outbound ESP SAs]
SPI: 738451674 (0x2c03e0da)
Connection ID: 64424509441
Transform set: ESP-ENCRYPT-DES-CBC ESP-AUTH-SHA1
SA duration (kilobytes/sec): 1843200/3600
SA remaining duration (kilobytes/sec): 1843200/3484
Max sent sequence-number:
UDP encapsulation used for NAT traversal: N
Status: Active
# Display the IKEv2 proposal, IKEv2 policy, IKEv2 SA and IPsec SAs on Device B.
[DeviceB] display ikev2 proposal
[DeviceB] display ikev2 policy
[DeviceB] display ikev2 sa
[DeviceB] display ipsec sa
Device A
#
interface GigabitEthernet1/0/1
ip address 1.1.1.1 255.255.0.0
ipsec apply policy map1
#
interface GigabitEthernet1/0/2
ip address 10.1.1.1 255.255.255.0
#
security-zone name Trust
import interface GigabitEthernet1/0/2
#
security-zone name Untrust
import interface GigabitEthernet1/0/1
#
ip route-static 2.2.0.0 16 1.1.1.2
ip route-static 10.1.2.0 24 1.1.1.2
#
acl advanced 3101
rule 0 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
#
ipsec transform-set tran1
encapsulation-mode tunnel
protocol esp
esp encryption-algorithm des-cbc
esp authentication-algorithm sha1
#
ipsec policy map1 10 isakmp
transform-set tran1
security acl 3101
remote-address 2.2.2.2
ikev2-profile profile1
#
ikev2 keychain keychain1
peer peer1
address 2.2.2.2 255.255.0.0
identity address 2.2.2.2
pre-shared-key plaintext abcde
#
ikev2 profile profile1
authentication-method local pre-share
authentication-method remote pre-share
keychain keychain1
match remote identity address 2.2.2.2 255.255.0.0
#
security-policy ip
rule 0 name ipseclocalout
action pass
source-zone local
destination-zone untrust
source-ip-host 1.1.1.1
destination-ip-host 2.2.2.2
rule 1 name ipseclocalin
action pass
source-zone untrust
destination-zone local
source-ip-host 2.2.2.2
destination-ip-host 1.1.1.1
rule 2 name trust-untrust
action pass
source-zone trust
destination-zone untrust
source-ip-subnet 10.1.1.0 255.255.255.0
destination-ip-subnet 10.1.2.0 255.255.255.0
rule 3 name untrust-trust
action pass
source-zone untrust
destination-zone trust
source-ip-subnet 10.1.2.0 255.255.255.0
destination-ip-subnet 10.1.1.0 255.255.255.0
#
Device B
#
interface GigabitEthernet1/0/1
ip address 2.2.2.2 255.255.0.0
ipsec apply policy use1
#
interface GigabitEthernet1/0/2
ip address 10.1.2.1 255.255.255.0
#
security-zone name Trust
import interface GigabitEthernet1/0/2
#
security-zone name Untrust
import interface GigabitEthernet1/0/1
#
ip route-static 1.1.0.0 16 2.2.2.1
ip route-static 10.1.1.0 24 2.2.2.1
#
acl advanced 3101
rule 0 permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
#
ipsec transform-set tran1
encapsulation-mode tunnel
protocol esp
esp encryption-algorithm des-cbc
esp authentication-algorithm sha1
#
ipsec policy use1 10 isakmp
transform-set tran1
security acl 3101
remote-address 1.1.1.1
ikev2-profile profile1
#
ikev2 keychain keychain1
peer peer1
address 1.1.1.1 255.255.0.0
identity address 1.1.1.1
pre-shared-key plaintext abcde
#
ikev2 profile profile1
authentication-method local pre-share
authentication-method remote pre-share
keychain keychain1
match remote identity address 1.1.1.1 255.255.0.0
#
security-policy ip
rule 0 name ipseclocalout
action pass
source-zone local
destination-zone untrust
source-ip-host 2.2.2.2
destination-ip-host 1.1.1.1
rule 1 name ipseclocalin
action pass
source-zone untrust
destination-zone local
source-ip-host 1.1.1.1
destination-ip-host 2.2.2.2
rule 2 name trust-untrust
action pass
source-zone trust
destination-zone untrust
source-ip-subnet 10.1.2.0 255.255.255.0
destination-ip-subnet 10.1.1.0 255.255.255.0
rule 3 name untrust-trust
action pass
source-zone untrust
destination-zone trust
source-ip-subnet 10.1.1.0 255.255.255.0
destination-ip-subnet 10.1.2.0 255.255.255.0