رایکا امپرا

!!! GW

interface Ethernet0/0

 ip nat inside

!

interface Ethernet0/1

 ip nat outside

!

ip nat pool TELNET-SERVER 192.168.1.10 192.168.1.10 netmask 255.255.255.0 type rotary

!

ip access-list extended PORT-FORWARDING

 permit tcp any any range 10 30

!

ip nat inside destination list PORT-FORWARDING pool TELNET-SERVER

Internet#telnet 12.1.1.2 23

Trying 12.1.1.2 ... Open

User Access Verification

Password:

PC1>exi

[Connection to 12.1.1.2 closed by foreign host]

Internet#telnet 12.1.1.2 22

Trying 12.1.1.2, 22 ...

% Connection refused by remote host

Internet#telnet 12.1.1.2 21

Trying 12.1.1.2, 21 ...

% Connection refused by remote host

!

GW#sh ip nat translations

Pro Inside global      Inside local       Outside local      Outside global

tcp 12.1.1.2:21        192.168.1.10:21    13.1.1.2:57894     13.1.1.2:57894

tcp 12.1.1.2:22        192.168.1.10:22    13.1.1.2:52027     13.1.1.2:52027

tcp 12.1.1.2:23        192.168.1.10:23    13.1.1.2:61447     13.1.1.2:61447