Configuring ASA, SITE TO SITE VPN, Example

Configuring ASA, SITE TO SITE VPN, Example

Head office  ASA Configuration
Interface	E0/0	E0/1
IP Address	100.100.100.1	192.168.1.1
Net mask	255.255.255.0	255.255.255.0
Branch Office ASA Configuration
Interface	E0/0	E0/1
IP Address	100.100.100.2	192.168.2.1
Net mask	255.255.255.0	255.255.255.0
R3 ROUTER
Interface	E1/0
IP Address	192.168.1.10
Net mask	255.255.255.0
R4 ROUTER
Interface	E1/0
IP Address	192.168.2.10
Net mask	255.255.255.0

Head office  ASA Configuration

HO# show run

: Saved

:

ASA Version 8.0(2)

!

hostname HO

enable password 8Ry2YjIyt7RRXU24 encrypted

names

!

interface Ethernet0/0

 nameif outside

 security-level 0

 ip address 100.100.100.1 255.255.255.0

no shut

!

interface Ethernet0/1

 nameif inside

 security-level 100

 ip address 192.168.1.1 255.255.255.0

no shut

!

passwd 2KFQnbNIdI.2KYOU encrypted

ftp mode passive

access-list lan1-to-lan2 extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0

access-list nonat extended permit ip 192.168.1.0 255.255.255.0 192.168.2.0 255.255.255.0

pager lines 24

mtu outside 1500

mtu inside 1500

no failover

icmp unreachable rate-limit 1 burst-size 1

no asdm history enable

arp timeout 14400

nat (inside) 0 access-list nonat

route outside 0.0.0.0 0.0.0.0 100.100.100.2 1

timeout xlate 3:00:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00

timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00

timeout uauth 0:05:00 absolute

dynamic-access-policy-record DfltAccessPolicy

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

crypto ipsec transform-set asa1ts esp-aes-192 esp-sha-hmac

crypto map asa1vpn 10 match address lan1-to-lan2

crypto map asa1vpn 10 set peer 100.100.100.2

crypto map asa1vpn 10 set transform-set asa1ts

crypto map asa1vpn 10 set security-association lifetime seconds 36000

crypto map asa1vpn interface outside

crypto isakmp identity address

crypto isakmp enable outside

crypto isakmp policy 10

 authentication pre-share

 encryption aes

 hash sha

 group 2

 lifetime 3600

telnet timeout 5

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics access-list

!

!

tunnel-group 100.100.100.2 type ipsec-l2l

tunnel-group 100.100.100.2 ipsec-attributes

 pre-shared-key  123456

prompt hostname context

Cryptochecksum:00000000000000000000000000000000

: end

HO#

Branch Office ASA Configuration

BO# show run

: Saved

:

ASA Version 8.0(2)

!

hostname BO

enable password 8Ry2YjIyt7RRXU24 encrypted

names

!

interface Ethernet0/0

 nameif outside

 security-level 0

 ip address 100.100.100.2 255.255.255.0

no shut

!

interface Ethernet0/1

 nameif inside

 security-level 100

 ip address 192.168.2.1 255.255.255.0

no shut

 !

passwd 2KFQnbNIdI.2KYOU encrypted

ftp mode passive

access-list lan2-to-lan1 extended permit ip 192.168.2.0 255.255.255.0 192.168.1.0 255.255.255.0

access-list nonat extended permit ip 192.168.2.0 255.255.255.0 192.168.1.0 255.255.255.0

pager lines 24

mtu outside 1500

mtu inside 1500

no failover

icmp unreachable rate-limit 1 burst-size 1

no asdm history enable

arp timeout 14400

nat (inside) 0 access-list nonat

route outside 0.0.0.0 0.0.0.0 100.100.100.1 1

timeout xlate 3:00:00

timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00

timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00

timeout uauth 0:05:00 absolute

dynamic-access-policy-record DfltAccessPolicy

no snmp-server location

no snmp-server contact

snmp-server enable traps snmp authentication linkup linkdown coldstart

crypto ipsec transform-set asa2ts esp-aes-192 esp-sha-hmac

crypto map asa2vpn 10 match address lan2-to-lan1

crypto map asa2vpn 10 set peer 100.100.100.1

crypto map asa2vpn 10 set transform-set asa2ts

crypto map asa2vpn 10 set security-association lifetime seconds 36000

crypto map asa2vpn interface outside

crypto isakmp identity address

crypto isakmp enable outside

crypto isakmp policy 10

 authentication pre-share

 encryption aes

 hash sha

 group 2

 lifetime 3600

telnet timeout 5

ssh timeout 5

console timeout 0

threat-detection basic-threat

threat-detection statistics access-list

!

!

tunnel-group 100.100.100.1 type ipsec-l2l

tunnel-group 100.100.100.1 ipsec-attributes

 pre-shared-key  123456

prompt hostname context

Cryptochecksum:00000000000000000000000000000000

: end

BO#

R3 ROUTER CONFIGURATION

interface Ethernet1/0

 ip address 192.168.1.10 255.255.255.0

no shut

ip route 0.0.0.0 0.0.0.0 192.168.1.1

R4 ROUTER CONFIGURATION

interface Ethernet1/0

 ip address 192.168.2.10 255.255.255.0

no shut

 ip route 0.0.0.0 0.0.0.0 192.168.2.1

 

Now ping from R3 ROUTER to R4 ROUTER

R3#ping 192.168.2.10

Now ping from R4 ROUTER to R3 ROUTER

R4#ping 192.168.1.10

Verifying

HO# show crypto isakmp sa

BO# show crypto isakmp sa