VPN CHALLENGE USING GRE

I accepted this challenge sir….also I complete this lab
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First I create a VPN tunnel ISP5 to ISP1..then we assign same series of private ip adds to connected a VPN…like in ISP1 have a IP is 192.168.30.1 and ISP5 have a IP is 192.168.30.2..

1] we create a tunnel form ISP1 we assign the IP 192.168.30.1…..then we decide a source and destination tunnel point form ISP1 source point is Fa0/0…and destination point is Fa0/0…(destination IP should be a public IP) and then we encapsulate the tunnel with IPV4.

same router configuration perform on ISP5 router….(source and destination are the same)

but after that ISP5 Lan & ISP1 Lan they are not communicate with each other…
so that we configure this private IP through RIP configuration…we can advertise the private Network IPs…this all we configure in both the ISP router(ISP1 and ISP5)

then we ping the IPs like …(form ISP1 ping 192.168.20.1)…
100% replay rate is coming..

link of the LAB–https://drive.google.com/drive/folders/1vgPHCHapmgMrQSzOSDvwT7wNZK5vgDMV?usp=sharing

With the help of VPN Tunnel 0 Creation within end routers ISP 1 and ISP 5 and static routing also.
Mentioned Source Interface and Destination Public IP.

commands on Router ISP1
ISP1(config)#int tunnel 1
ISP1(config-if)#tunnel mode gre ip
ISP1(config-if)#tunnel source f0/0
ISP1(config-if)#tunnel destination 5.0.0.2
ISP1(config-if)#ip address 200.20.10.10 255.255.255.0
ISP1(config)#ip route 0.0.0.0 0.0.0.0 5.0.0.2

commands on Router ISP5
ISP5(config)#int tunnel 1
ISP5(config-if)#tunnel mode gre ip
ISP5(config-if)#tunnel source f0/0
ISP5(config-if)#tunnel destination 2.0.0.1
ISP5(config-if)#ip address 200.20.30.30 255.255.255.0
ISP5(config-if)#ip route 0.0.0.0 0.0.0.0 2.0.0.1

Router ISP1—->

ISP1(config)#int tunnel 0
ISP1(config-if)#ip address 192.168.30.1 255.255.255.0
ISP1(config-if)#tunnel source f0/0
ISP1(config-if)#tunnel destination 5.0.0.2
ISP1(config-if)#tunnel mode gre ip

Router ISP5—–>

ISP5(config)#int tunnel 0
ISP5(config-if)#ip address 192.168.30.2 255.255.255.0
ISP5(config-if)#tunnel source f0/0
ISP5(config-if)#tunnel destination 2.0.0.1
ISP5(config-if)#tunnel mode gre ip

Sir I accepted this challenge
First of all in step 1
▪︎STEP 1 :– we have to create VPN tunnel from ISP 1 to ISP 5 so let’s start.
IN ISP 1 CREATE VPN TUNNEL
ISP1# configure terminal
ISP1(config)# interface tunnel 0
ISP1(config)# ip address 192.168.30.1 255.255.255.0
ISP1(config)# no shutdown
ISP1(config)# tunnel source f0/0
ISP1(config)# tunnel destination 5.0.0.2
ISP1(config)# tunnel mode gre ip
ISP1(config)# end

▪︎STEP 2 :– we have to create VPN in ISP 5
ISP5# configure terminal
ISP5(config)# interface tunnel 0
ISP5(config)# ip address 192.168.30.2 255.255.255.0
ISP5(config)# no shutdown
ISP5(config)# tunnel source f0/0
ISP5(config)# tunnel destination 2.0.0.2
ISP5(config)# tunnel mode gre ip
ISP5(config)# end

Now how we can show tunnel was created so in Step 3 for show tunnel 0

▪︎STEP 3 :– ISP1# show ip interface brief
You can show tunnel with the help of this command

:– ping from 192.168.30.1 to 192.168.30.2 successfully
But one problem is here you can’t able to ping between
private network of ISP 1 OR ISP 5 (192.168.10.0 OR
192.168.20.0)

So in Step 4 we have to perform any routing technology to give the information in router so..

▪︎STEP 4 :– perform routing in ISP1 and ISP5 router
ISP1# configure terminal
ISP1(config)# ip routing
ISP1(config)# router ospf 100
ISP1(config)# router I’d 1.1.1.1
ISP1(config)# network 192.168.10.0 0.0.0.255 area 0
ISP1(config)# network 192.168.30.0 0.0.0.255 area 0

▪︎STEP 5 :– Same configuration in ISP 5 router
ISP5# configure terminal
ISP5(config)# ip routing
ISP5(config)# router ospf 100
ISP5(config)# router I’d 2.2.2.2
ISP5(config)# network 192.168.20.0 0.0.0.255 area 0
ISP5(config)# network 192.168.30.0 0.0.0.255 area 0

●Now this neghbourship is created with the tunnel 0

● AND NOW PING FROM ISP1 PRIVATE NETWORK TO ISP5 PRIVATE NETWORK

ISP1# ping 192.168.20.1
Success rate is 100%

So we can communicate securely from ISP1 PRIVATE NETWORKS TO ISP5 PRIVATE NETWORKS .

THANKS FOR THIS GREAT LAB SIR
👍👍

Goto the Isp2 router first
command-
ISP2(config)# interface Tunnel0
ISP2(config-if)# tunnel source 2.0.0.2
ISP2(config-if)# tunnel destination 5.0.0.2
exit
ISP2 (Config)# ip route 192.168.20.0 255.255.255.0 Tunnel0
now back to ISP5
ISP5(config)# interface Tunnel0
ISP5(config-if)# tunnel source 5.0.0.2
ISP5(config-if)# tunnel destination 2.0.0.2
exit
ISP5 (Config) ip route 192.168.10.0 255.255.255.0 Tunnel0

to verify the tunnel…just check BOTH SIDE
sh run int Tunnel0 ,status and protocol must be UP UP to communicate through tunnel
and LAN will ping successfully both router

Thank you

goto router ISP2 – command
ISP2(config)# interface Tunnel0
ISP2(config-if)#tunnel mode GRE ipv4
ISP2(config-if)# tunnel source 2.0.0.2
ISP2(config-if)# tunnel destination 5.0.0.2
exit
ISP2(Config)# ip route 192.168.10.0 255.255.255.0 Tunnel0

now goto router ISP5 command
ISP5(config)# interface Tunnel0
ISP2(config-if)#tunnel mode GRE ipv4
ISP5(config-if)# tunnel source 5.0.0.2
ISP5(config-if)# tunnel destination 2.0.0.2
exit
ISP5 (Config) ip route 192.168.20.0 255.255.255.0 Tunnel0

to verify the tunnel…just checke
sh run int Tunnel0 ,status and protocol must be UP UP to communicate through tunnel

Thank you…

Sir, OR can any body tell me what version of the Packet Tracer has been used to open this lab? I am using Version 7.2 and having problem to open this lab.

Please let me know the version.

Thanks in advanced.