Posted by on December 17, 2019

Configure Site to Site IPSec VPN Tunnel in Cisco IOS Router

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- Oct 08, 2015, configure, site to Site IPSec VPN Tunnel in, cisco IOS Router. IPSec VPN is a security feature that allow you to create secure communication link (also called. VPN Tunnel ) between two different networks located at different sites. R1 is configured with /24 and R2 is configured with /24 IP address. R1(config crypto isakmp key cisco@123 address.

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- Cisco IOS routers can be used to setup, vPN tunnel between two sites. R1#ping source Type escape sequence to abort. The Phase 1 password is cisco@123 and remote peer IP address.

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- A VPN acts as a sort of tunnel, encrypting the data you transmit and receive. 13 November 2016 / howto vpn on demand configuration profiles for ios and macos explained. First published on TechNet on Jul 30, 2018 By Tyler Castaldo Intune. Set transform-set MY-SET This links the transform-set in this crypto map configuration. There are two phases in IPSec configuration called Phase 1 and Phase. To verify the IPSec Phase 1 connection, type show crypto isakmp sa as shown below.

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- But I've heard that it can be done with. IPSec protocols and standards could be combined to create a robust and functional Virtual Private Network (. And so a new version of Speedify was born, optimized for iOS. R1#show crypto ipsec sa interface: FastEthernet0/0 Crypto map tag: ipsec-site-TO-site-VPN, local addr protected vrf: (none) local ident (addr/mask/prot/port 0/0) remote ident (addr/mask/prot/port 0/0) current_peer port 500 permit, flagsorigin_is_acl, #pkts encaps: 9, #pkts encrypt: 9, #pkts digest: 9 #pkts. This is the amount to time that the phase 2 session exists before re-negotiation.

R1#show crypto isakmp sa dst src state conn-id slot status QM_idle 1 0 active To verify IPSec Phase 2 connection, type show crypto ipsec sa as shown below. Here is the detail of command used above, crypto ipsec transform-set MY-SET, creates transform-set called MY-SET esp-aes, aES encryption method and ESP IPSec protocol will be used. Here, traffic originating from network to network will go via VPN tunnel. You may also like - The following two tabs change content below. Match address VPN-traffic Its matches interesting traffic from ACL named VPN-traffic. R1(config ip access-list extended 101 R1(config-ext-nacl deny ip R1(config-ext-nacl permit ip any R1(config-ext-nacl exit R1(config ip nat inside source list 101 interface FastEthernet0/1 overload Verification and testing. Configuring IPSec Phase 2 (Transform Set) R2(config crypto ipsec transform-set MY-SET esp-aes 128 esp-md5-hmac R2(cfg-crypto-trans crypto ipsec security-association lifetime seconds 3600 Step. As of now, both routers have very basic setup like, IP addresses, NAT Overload, default route, hostnames, SSH logins, etc. R1(config-crypto-map match address VPN-traffic R1(config-crypto-map set peer R1(config-crypto-map set transform-set MY-SET Here is the detail of command used above, crypto map ipsec-STE-TO-STE-VPN 10 ipsec-isakmp Creates new crypto map with sequence number. Failed: 0 #pkts not decompressed: 0, #pkts decompress failed: 0 #send errors 16, #recv errors 0 local crypto endpt.:, remote crypto endpt.: path mtu 1500, ip mtu 1500, ip mtu idb FastEthernet0/0 current outbound spi: 0xD41CAB1(222415537) inbound esp sas: spi: 0x9530FB4E(. I have already verified that both routers can ping each other so lets start the VPN configuration. R2(config-crypto-map match address VPN-traffic R2(config-crypto-map set peer R2(config-crypto-map set transform-set MY-SET Step. R2(config ip access-list extended VPN-traffic R2(config-ext-nacl permit ip Step. R1#show crypto session Crypto session current status Interface: FastEthernet0/0 Session status: UP-active Peer: port 500 IKE SA: local /500 remote /500 Active ipsec flow: permit ip / / Active SAs: 2, origin: crypto map In this way you. Routers participating in Phase 1 negotiation tries to match a isakmp policy matching against the list of policies one by one. Encryption 3des 3DES encryption algorithm will be used for Phase. R1(cfg-crypto-trans crypto ipsec security-association lifetime seconds 3600. R1(config crypto map ipsec-site-TO-site-VPN 10 ipsec-isakmp note: This new crypto map will remain disabled until a peer and a valid access list have been configured. R2(config crypto map ipsec-site-TO-site-VPN 10 ipsec-isakmp note: This new crypto map will remain disabled until a peer and a valid access list have been configured. The two sites have static public IP address as shown in the diagram. Cisco IOS routers can be used to setup VPN tunnel between two sites. Configuring IPSec Phase 1 (isakmp Policy). R1(config int fa0/0 R1(config-if crypto map ipsec-site-TO-site-VPN *Mar 1 05:43:51.114: crypto-6-isakmp_ON_OFF: isakmp is ON Step. Bipin Bipin is a freelance Network and System Engineer with expertise on Cisco, Juniper, Microsoft, VMware, and other technologies. Here is the details of each commands used above, crypto isakmp policy 5, this command creates isakmp policy number. You can create multiple policies, for example 7, 8, 9 with different configuration. Configuring Extended ACL for interesting traffic. This ACL will be used in Step 4 in Crypto Map.

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