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diff --git a/docs/configexamples/site-2-site-cisco.rst b/docs/configexamples/site-2-site-cisco.rst new file mode 100644 index 00000000..96e48d07 --- /dev/null +++ b/docs/configexamples/site-2-site-cisco.rst @@ -0,0 +1,177 @@ +.. _examples-site-2-site-cisco: + +Site-to-Site IPSec VPN to Cisco using FlexVPN +--------------------------------------------- + +This guide shows a sample configuration for FlexVPN site-to-site Internet +Protocol Security (IPsec)/Generic Routing Encapsulation (GRE) tunnel. + +FlexVPN is a newer "solution" for deployment of VPNs and it utilizes IKEv2 as +the key exchange protocol. The result is a flexible and scalable VPN solution +that can be easily adapted to fit various network needs. It can also support a +variety of encryption methods, including AES and 3DES. + +The lab was built using EVE-NG. + + +Configuration +^^^^^^^^^^^^^^ + +VyOS +===== + +- GRE: + +.. code-block:: none + + set interfaces tunnel tun1 encapsulation 'gre' + set interfaces tunnel tun1 ip adjust-mss '1336' + set interfaces tunnel tun1 mtu '1376' + set interfaces tunnel tun1 remote '10.1.1.6' + set interfaces tunnel tun1 source-address '88.2.2.1' + + +- IPsec: + +.. code-block:: none + + set vpn ipsec authentication psk vyos_cisco_l id 'vyos.net’ + set vpn ipsec authentication psk vyos_cisco_l id 'cisco.hub.net' + set vpn ipsec authentication psk vyos_cisco_l secret 'secret' + set vpn ipsec esp-group e1 lifetime '3600' + set vpn ipsec esp-group e1 mode 'tunnel' + set vpn ipsec esp-group e1 pfs 'disable' + set vpn ipsec esp-group e1 proposal 1 encryption 'aes128' + set vpn ipsec esp-group e1 proposal 1 hash 'sha256' + set vpn ipsec ike-group i1 key-exchange 'ikev2' + set vpn ipsec ike-group i1 lifetime '28800' + set vpn ipsec ike-group i1 proposal 1 dh-group '5' + set vpn ipsec ike-group i1 proposal 1 encryption 'aes256' + set vpn ipsec ike-group i1 proposal 1 hash 'sha256' + set vpn ipsec interface 'eth2' + set vpn ipsec options disable-route-autoinstall + set vpn ipsec options flexvpn + set vpn ipsec options interface 'tun1' + set vpn ipsec options virtual-ip + set vpn ipsec site-to-site peer cisco_hub authentication local-id 'vyos.net' + set vpn ipsec site-to-site peer cisco_hub authentication mode 'pre-shared-secret' + set vpn ipsec site-to-site peer cisco_hub authentication remote-id 'cisco.hub.net' + set vpn ipsec site-to-site peer cisco_hub connection-type 'initiate' + set vpn ipsec site-to-site peer cisco_hub default-esp-group 'e1' + set vpn ipsec site-to-site peer cisco_hub ike-group 'i1' + set vpn ipsec site-to-site peer cisco_hub local-address '88.2.2.1' + set vpn ipsec site-to-site peer cisco_hub remote-address '10.1.1.6' + set vpn ipsec site-to-site peer cisco_hub tunnel 1 local prefix '88.2.2.1/32' + set vpn ipsec site-to-site peer cisco_hub tunnel 1 protocol 'gre' + set vpn ipsec site-to-site peer cisco_hub tunnel 1 remote prefix '10.1.1.6/32' + set vpn ipsec site-to-site peer cisco_hub virtual-address '0.0.0.0' + + +Cisco +===== +.. code-block:: none + + aaa new-model + ! + ! + aaa authorization network default local + ! + crypto ikev2 name-mangler GET_DOMAIN + fqdn all + email all + ! + ! + crypto ikev2 authorization policy vyos + pool mypool + aaa attribute list mylist + route set interface + route accept any tag 100 distance 5 + ! + crypto ikev2 keyring mykeys + peer peer1 + identity fqdn vyos.net + pre-shared-key local secret + pre-shared-key remote secret + crypto ikev2 profile my_profile + match identity remote fqdn vyos.net + identity local fqdn cisco.hub.net + authentication remote pre-share + authentication local pre-share + keyring local mykeys + dpd 10 3 periodic + aaa authorization group psk list local name-mangler GET_DOMAIN + aaa authorization user psk cached + virtual-template 1 + ! + ! + ! + crypto ipsec transform-set TSET esp-aes esp-sha256-hmac + mode tunnel + ! + ! + crypto ipsec profile my-ipsec-profile + set transform-set TSET + set ikev2-profile my_profile + ! + interface Virtual-Template1 type tunnel + no ip address + ip mtu 1376 + ip nhrp network-id 1 + ip nhrp shortcut virtual-template 1 + ip tcp adjust-mss 1336 + tunnel path-mtu-discovery + tunnel protection ipsec profile my-ipsec-profile + ! + ip local pool my_pool 172.16.122.1 172.16.122.254 + + +Since the tunnel is a point-to-point GRE tunnel, it behaves like any other +point-to-point interface (for example: serial, dialer), and it is possible to +run any Interior Gateway Protocol (IGP)/Exterior Gateway Protocol (EGP) over +the link in order to exchange routing information + +Verification +^^^^^^^^^^^^ + +.. code-block:: none + + vyos@vyos$ show interfaces + Codes: S - State, L - Link, u - Up, D - Down, A - Admin Down + Interface IP Address S/L Description + --------- ---------- --- ----------- + eth0 - u/u + eth1 - u/u + eth2 88.2.2.1/24 u/u + eth3 172.16.1.2/24 u/u + lo 127.0.0.1/8 u/u + ::1/128 + tun1 172.16.122.2/32 u/u + + vyos@vyos:~$ show vpn ipsec sa + Connection State Uptime Bytes In/Out Packets In/Out Remote address Remote ID Proposal + ------------------ ------- -------- -------------- ---------------- ---------------- --------------------- ----------------------------- + cisco_hub-tunnel-1 up 44m17s 35K/31K 382/367 10.1.1.6 cisco.hub.net AES_CBC_128/HMAC_SHA2_256_128 + + + Hub#sh crypto ikev2 sa detailed + IPv4 Crypto IKEv2 SA + + Tunnel-id Local Remote fvrf/ivrf Status + 5 10.1.1.6/4500 88.2.2.1/4500 none/none READY + Encr: AES-CBC, keysize: 256, PRF: SHA256, Hash: SHA256, DH Grp:5, Auth sign: PSK, Auth verify: PSK + Life/Active Time: 86400/2694 sec + CE id: 0, Session-id: 2 + Status Description: Negotiation done + Local spi: C94EE2DC92A60C47 Remote spi: 9AF0EF151BECF14C + Local id: cisco.hub.net + Remote id: vyos.net + Local req msg id: 269 Remote req msg id: 0 + Local next msg id: 269 Remote next msg id: 0 + Local req queued: 269 Remote req queued: 0 + Local window: 5 Remote window: 1 + DPD configured for 10 seconds, retry 3 + Fragmentation not configured. + Extended Authentication not configured. + NAT-T is not detected + Cisco Trust Security SGT is disabled + Assigned host addr: 172.16.122.2 |