[cisco-nas] How can I telnet to my NAS server with NAT configuration

[Souphonh]

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Current configuration : 2196 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname lpb_ras
!
aaa new-model
aaa authentication login default local
aaa authentication ppp default group radius local
aaa authorization network default group radius if-authenticated
aaa accounting network default start-stop group radius
enable secret 5 $1$RLt8$zpVnFUtCBXkbq2/hb1YdA/
enable password 7 03140B07145B32184A04480B
!
username test password 7 00141215174C0F
username admin password 7 0014430A160F18520B2C1D40
ip subnet-zero
!
!
ip domain-name mydomain.com
ip name-server xxx.xxx.xxx.xxx
ip name-server xxx.xxx.xxx.xxx
ip name-server xxx.xxx.xxx.xxx
!
ip audit notify log
ip audit po max-events 100
async-bootp dns-server xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface Loopback0
 ip address 192.168.100.1 255.255.255.0
 ip nat inside
!
interface Ethernet0/0
 ip address 10.0.3.124 255.255.255.0
 ip nat outside
 half-duplex
 no mop enabled
!


interface Group-Async1
 ip unnumbered Loopback0
 ip nat inside
 encapsulation ppp
 ip tcp header-compression
 async mode interactive
 peer default ip address pool dialin_pool
 ppp authentication chap pap
 group-range 33 48
!
ip local pool dialin_pool 192.168.100.2 192.168.100.20
ip nat inside source list 1 interface Ethernet0/0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 10.0.3.219
no ip http server
!
access-list 1 permit any
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
!
snmp-server community public RO
snmp-server enable traps tty
radius-server host 202.47.226.10 auth-port 1812 acct-port 1813
radius-server key 7 0208107B1D050D
radius-server vsa send accounting
radius-server vsa send authentication
!
dial-peer cor custom
!
!
!
!
!
line con 0
line 33 48
 flush-at-activation
 modem Dialin
 autoselect during-login
 autoselect ppp
 flowcontrol hardware
line aux 0
line vty 0 4
 password 7 1209551B005F1F502E267526
!
end