07-13-2003 01:12 AM - edited 03-02-2019 08:49 AM
Hello all,
I have implemented NAT for two LAN (LAN A (10.62.121.0) as outside network and LAN B (10.62.131.0) as inside network) on cisco 1700 series. I want to be able to telnet to LAN B Server from outside network (LAN A). I've NAT the LAN B IP address to IP Pool Address (IP Nat Pool). In Access list section, I've given permission to any outside host to telnet and ping the Server. The results are:
I can Ping successfully, but I cant telnet to the Server.
Herewith for the running-config :
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname routerNAT
!
enable secret 5 X
!
memory-size iomem 15
ip subnet-zero
!
ip name-server 10.62.121.82
!
interface FastEthernet0/0
ip address 10.62.121.75 255.255.254.0
ip nat outside
speed auto
full-duplex
!
interface Serial1/0
bandwidth 128
ip address 192.168.3.1 255.255.255.0
ip nat inside
no ip mroute-cache
serial restart_delay 0
ip rtp priority 16384 16383 64
!
ip nat pool eds-sby 10.62.121.43 10.62.121.43 netmask 255.255.254.0
ip nat inside source list 1 pool eds-sby overload
ip classless
ip route 0.0.0.0 0.0.0.0 10.62.121.200
ip route 10.62.130.0 255.255.254.0 Serial1/0
ip route 192.244.194.0 255.255.255.0 10.62.121.72
ip http server
ip pim bidir-enable
!
!
access-list 1 permit 192.168.3.0 0.0.0.255
access-list 1 permit 10.62.130.0 0.0.1.255
access-list 1 permit 10.62.120.0 0.0.1.255
!
snmp-server community public RO
call rsvp-sync
!
end
Herewith the simple configuration
Net 10.62.131.0 --- Router---Net 192.168.3.0----RouterNAT----Net 10.62.121.0
Help please and thanks before
Regards,
Andhi
Solved! Go to Solution.
07-13-2003 08:30 AM
Andhi,
You need to set up a static NAT for telnet connections to your internal server. Use the command "ip nat inside source static tcp 10.62.131.x 23 10.62.121.43 (port #)", where "port #" is the TCP port that you will assign telnet clients to use when accessing your server. Of course, the default is 23, and you may use this, but using the default port will make all incoming Telnet connections come to your server. If you have, or will have, other devices to which you will want to telnet on the inside network, you will need to assign different ports for each one since they will all have the same external address.
Good Luck,
Mark
07-13-2003 08:30 AM
Andhi,
You need to set up a static NAT for telnet connections to your internal server. Use the command "ip nat inside source static tcp 10.62.131.x 23 10.62.121.43 (port #)", where "port #" is the TCP port that you will assign telnet clients to use when accessing your server. Of course, the default is 23, and you may use this, but using the default port will make all incoming Telnet connections come to your server. If you have, or will have, other devices to which you will want to telnet on the inside network, you will need to assign different ports for each one since they will all have the same external address.
Good Luck,
Mark
07-13-2003 08:37 AM
You need to have a static IP mapping for the server you want to telnet to. There is only overload mapping present, there should be a static non-overload statment for that particular server as well.
Hope this helps.
07-13-2003 08:49 AM
Hello
if you ping the server from outside thats mine its wroking fine so just ACTIVE in your server telnet service then you can telnet your server.
so check i think its work ..........
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