cisco 1721 路由器访问不了

之前可以用别的电脑telnet连接上，但是我不知道密码,昨天用网上介绍的办法把密码给改了，但是我再也telnet不到它了,,下面是sh run的东西,,大侠帮忙啊!!!
本来是用它通过vpn开视频会议用的..我把我把他的内口连到局渔网上,把电脑的ip改成它一个网段,以前是可以telnet的，现在怎么也不行了,,:.....(
SFR>en
Password:
SFR#sh run
Building configuration...
Current configuration : 1403 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname "SFR"
!
enable secret 5 $1$.Qgl$CSpB9S7OW17Avsrjyvs6a.
!
ip subnet-zero
!
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
!
!
crypto isakmp policy 10
encr 3des
hash md5
authentication pre-share
group 2
lifetime 28800
crypto isakmp key fcmy376tun5tu85z address 202.248.235.142
!
!
crypto ipsec transform-set ESP esp-3des esp-md5-hmac
!
crypto map To_FANUC 10 ipsec-isakmp
description SFR_to_FANUC
set peer 202.248.235.142
set security-association lifetime seconds 28800
set transform-set ESP
match address 100
!
!
!
!
interface Ethernet0
ip address 202.96.246.14 255.255.255.252
ip nat outside
shutdown
half-duplex
crypto map To_FANUC
!
interface FastEthernet0
ip address 10.36.0.1 255.255.255.0
ip nat inside
shutdown
speed auto
!
ip nat inside source list 101 interface Ethernet0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 202.96.246.13
no ip http server
!
!
access-list 100 permit ip 10.36.0.0 0.0.0.255 143.201.0.0 0.0.255.255
access-list 101 deny   ip 10.36.0.0 0.0.0.255 143.201.0.0 0.0.255.255
access-list 101 permit ip 10.36.0.0 0.0.0.255 any
!
!
line con 0
line aux 0
password n88basic
login
modem InOut
transport input all
flowcontrol hardware
line vty 0 4
access-class 1 in
password n88basic
login
!
end

忘了说了哦，上边的sh run是通过consol口连接得到的


网友：

用CONSOL登陆进去
SFR>en
Password:
conf t
int f 0/0
no shutdown
exit
记得保存一下配置。
然后在电脑上PING 10.36.0.1
然后再telnet