Difference between revisions of "IPsec Cisco IOS"

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== Site-to-Site VPN ==
 
== Site-to-Site VPN ==
 
[[Image:Site-to-Site IPsec tunnel.png|right|300px|thumb|Site-to-Site IPsec VPN]]
 
[[Image:Site-to-Site IPsec tunnel.png|right|300px|thumb|Site-to-Site IPsec VPN]]
 +
=== R1 config ===
 +
<source lang="cli">
 +
hostname R1
 +
!
 +
interface loopback 0
 +
ip address 172.16.1.1 255.255.255.0
 +
!
 +
router rip
 +
version 2
 +
network 172.16.1.0
 +
!
 +
crypto isakmp enable
 +
!
 +
crypto isakmp policy 10
 +
authentication pre-share
 +
encryption aes 256
 +
hash sha
 +
group 5
 +
lifetime 3600
 +
!
 +
crypto isakmp key cisco address 192.168.100.104
 +
!
 +
crypto ipsec transform-set 50 esp-aes 256 esp-sha-hmac ah-sha-hmac
 +
exit
 +
!
 +
crypto ipsec security-association lifetime seconds 1800
 +
!
 +
access-list 101 permit ip 172.16.1.0 0.0.0.255 172.16.3.0 0.0.0.255
 +
!
 +
crypto map MYMAP 10 ipsec-isakmp
 +
match address 101
 +
set peer 192.168.100.104
 +
set pfs group5
 +
set transform-set 50
 +
set security-association lifetime seconds 900
 +
!
 +
interface fastethernet0/0
 +
crypto map MYMAP
 +
</source>
 +
 +
=== R2 Config ===
 +
<source lang="cli">
 +
hostname R2
 +
!
 +
interface loopback 0
 +
ip address 172.16.3.1 255.255.255.0
 +
!
 +
router rip
 +
version 2
 +
network 172.16.3.0
 +
network 192.168.100.0
 +
!
 +
crypto isakmp enable
 +
!
 +
crypto isakmp policy 10
 +
authentication pre-share
 +
encryption aes 256
 +
hash sha
 +
group 5
 +
lifetime 3600
 +
!
 +
crypto isakmp key cisco address 192.168.100.103
 +
!
 +
crypto ipsec transform-set 50 esp-aes 256 esp-sha-hmac ah-sha-hmac
 +
exit
 +
!
 +
crypto ipsec security-association lifetime seconds 1800
 +
!
 +
access-list 101 permit ip 172.16.3.0 0.0.0.255 172.16.1.0 0.0.0.255
 +
!
 +
crypto map MYMAP 10 ipsec-isakmp
 +
match address 101
 +
set peer 192.168.100.103
 +
set pfs group5
 +
set transform-set 50
 +
set security-association lifetime seconds 900
 +
!
 +
interface fastethernet0/0
 +
crypto map MYMAP
 +
</source>
 +
=== checking tunnel ===
 +
<source lang="cli">
 +
R1#<input>show crypto isakmp policy</input>
 +
Global IKE policy
 +
Protection suite of priority 10
 +
        encryption algorithm:  AES - Advanced Encryption Standard (256 bit keys).
 +
        hash algorithm:        Secure Hash Standard
 +
        authentication method:  Pre-Shared Key
 +
        Diffie-Hellman group:  #5 (1536 bit)
 +
        lifetime:              3600 seconds, no volume limit
 +
Default protection suite
 +
        encryption algorithm:  DES - Data Encryption Standard (56 bit keys).
 +
        hash algorithm:        Secure Hash Standard
 +
        authentication method:  Rivest-Shamir-Adleman Signature
 +
        Diffie-Hellman group:  #1 (768 bit)
 +
        lifetime:              86400 seconds, no volume limit
 +
R1#<input>show crypto ipsec transform-set</input>
 +
Transform set 50: { ah-sha-hmac  }
 +
  will negotiate = { Tunnel,  },
 +
  { esp-256-aes esp-sha-hmac  }
 +
  will negotiate = { Tunnel,  },
 +
R1#show crypto map
 +
Crypto Map "MYMAP" 10 ipsec-isakmp
 +
        Peer = 192.168.100.104
 +
        Extended IP access list 101
 +
            access-list 101 permit ip 172.16.1.0 0.0.0.255 172.16.3.0 0.0.0.255
 +
        Current peer: 192.168.100.104
 +
        Security association lifetime: 4608000 kilobytes/900 seconds
 +
        PFS (Y/N): Y
 +
        DH group:  group5
 +
        Transform sets={
 +
                50,
 +
        }
 +
        Interfaces using crypto map MYMAP:
 +
                FastEthernet0/0
 +
</source>

Revision as of 05:40, 6 August 2009

Eksempler

Site-to-Site VPN

Site-to-Site IPsec VPN

R1 config

hostname R1
!
interface loopback 0
 ip address 172.16.1.1 255.255.255.0
!
router rip
 version 2
 network 172.16.1.0
!
crypto isakmp enable
!
crypto isakmp policy 10
 authentication pre-share
 encryption aes 256
 hash sha
 group 5
 lifetime 3600
!
crypto isakmp key cisco address 192.168.100.104
!
crypto ipsec transform-set 50 esp-aes 256 esp-sha-hmac ah-sha-hmac
 exit
!
crypto ipsec security-association lifetime seconds 1800
!
access-list 101 permit ip 172.16.1.0 0.0.0.255 172.16.3.0 0.0.0.255
!
crypto map MYMAP 10 ipsec-isakmp
 match address 101
 set peer 192.168.100.104
 set pfs group5
 set transform-set 50
 set security-association lifetime seconds 900
!
interface fastethernet0/0
 crypto map MYMAP

R2 Config

hostname R2
!
interface loopback 0
 ip address 172.16.3.1 255.255.255.0
!
router rip
 version 2
 network 172.16.3.0
 network 192.168.100.0
!
crypto isakmp enable
!
crypto isakmp policy 10
 authentication pre-share
 encryption aes 256
 hash sha
 group 5
 lifetime 3600
!
crypto isakmp key cisco address 192.168.100.103
!
crypto ipsec transform-set 50 esp-aes 256 esp-sha-hmac ah-sha-hmac
 exit
!
crypto ipsec security-association lifetime seconds 1800
!
access-list 101 permit ip 172.16.3.0 0.0.0.255 172.16.1.0 0.0.0.255
!
crypto map MYMAP 10 ipsec-isakmp
 match address 101
 set peer 192.168.100.103
 set pfs group5
 set transform-set 50
 set security-association lifetime seconds 900
!
interface fastethernet0/0
 crypto map MYMAP

checking tunnel

R1#<input>show crypto isakmp policy</input>
Global IKE policy
Protection suite of priority 10
        encryption algorithm:   AES - Advanced Encryption Standard (256 bit keys).
        hash algorithm:         Secure Hash Standard
        authentication method:  Pre-Shared Key
        Diffie-Hellman group:   #5 (1536 bit)
        lifetime:               3600 seconds, no volume limit
Default protection suite
        encryption algorithm:   DES - Data Encryption Standard (56 bit keys).
        hash algorithm:         Secure Hash Standard
        authentication method:  Rivest-Shamir-Adleman Signature
        Diffie-Hellman group:   #1 (768 bit)
        lifetime:               86400 seconds, no volume limit
R1#<input>show crypto ipsec transform-set</input>
Transform set 50: { ah-sha-hmac  }
   will negotiate = { Tunnel,  },
   { esp-256-aes esp-sha-hmac  }
   will negotiate = { Tunnel,  },
R1#show crypto map
Crypto Map "MYMAP" 10 ipsec-isakmp
        Peer = 192.168.100.104
        Extended IP access list 101
            access-list 101 permit ip 172.16.1.0 0.0.0.255 172.16.3.0 0.0.0.255
        Current peer: 192.168.100.104
        Security association lifetime: 4608000 kilobytes/900 seconds
        PFS (Y/N): Y
        DH group:  group5
        Transform sets={
                50,
        }
        Interfaces using crypto map MYMAP:
                FastEthernet0/0
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