From R1 you would just telnet to 188.8.131.52 on R3. R1's IP address will appear as 10.1.1.5 so you need to make sure there is a route on R3 for this IP. If you are using 10.1.1.0/24 between R1 and R2 only R3 would need to have a route for that subnet as R2 is locally connected.
From R3 you telnet to 10.1.1.5 but that would change the port number to 1080 and R1 will not respond in terms of telnettting in. You could also still telnet to 10.1.1.1 and that would allow telnet.
If you want to telnet to 10.1.1.5 from R3 and still get in then change your NAT statmement to use TCP port 23 on both IPs.
The extendable keyword is used, for example, where you map the same local IP to multiple global IPs and the router needs to do a full translation to keep track of which global IP is being used. So i don't think it is needed in your configuration but i don't have anything to test with to be absolutely sure.
int f0/0 ip add 10.1.1.1 255.255.255.0 no shut ip route 0.0.0.0 0.0.0.0 10.1.1.2
Configuration On R2:
int f0/1 ip nat outside int f0/0 ip nat inside exi ip route 0.0.0.0 0.0.0.0 184.108.40.206 int f0/0 ip add 10.1.1.2 255.255.255.0 no shut int f0/1 ip add 220.127.116.11 255.255.255.0 no shut exit ip nat inside source static tcp 10.1.1.1 1080 18.104.22.168 23
Configuration On R3:
int f0/0 ip add 22.214.171.124 255.255.255.0 no shut int l1 ip add 126.96.36.199 255.255.255.0 exi
I'm trying to help but you need to read what i am saying. You cannot use the NAT statement you have because telnet is port 23 but you are changing it to port 1080 which is not telnet so R1 won't answer. If you want to only telnet from R3 to R1 -
ip nat inside source static tcp 10.1.1.1 23 188.8.131.52 23
but that would then not work it you telnet from R1 to R3 because the source port will not be 23 so the NAT translation will not take effect.. If you want to telnet both ways then you need to remove the ports from yout NAT statement -
ip nat inside source static 10.1.1.1 184.108.40.206
If you wanted to access R3 by using port address translation you would need to specify the source port. I don't think is possible with IOS. The use of port forwarding in IOS is used generally from outside to inside and not the other way round.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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