I think I'm going crazy, I have confgured this Cisco 877 for the internet and it can ping google.com etc, but when I attach my laptop to the router in can't ping google's IP address. It it like the router is fine and online, but the laptop can reach the router and that's it. I though it might be my access list?
router#sh run Building configuration...
Current configuration : 1908 bytes ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname andy ! boot-start-marker boot-end-marker ! logging buffered 4096 informational ! no aaa new-model ! ! dot11 syslog ip cef ! ! no ip dhcp use vrf connected ip dhcp excluded-address 10.5.5.1 10.5.5.10 ! ip dhcp pool clients import all network 10.5.5.0 255.255.255.0 default-router 10.5.5.1 ! ! ip auth-proxy max-nodata-conns 3 ip admission max-nodata-conns 3 ! multilink bundle-name authenticated ! ! username **** privilege 15 password 0 **** ! ! archive log config hidekeys ! ! ! ! ! interface ATM0 no ip address ip virtual-reassembly atm vc-per-vp 64 atm ilmi-keepalive pvc 0/38 encapsulation aal5mux ppp dialer dialer pool-member 1 ! dsl operating-mode auto cdp enable ! interface FastEthernet0 ! interface FastEthernet1 ! interface FastEthernet2 ! interface FastEthernet3 ! interface Vlan1 ip address 10.5.5.1 255.255.255.0 ip nat inside ip virtual-reassembly ! interface Dialer1 ip address negotiated no ip unreachables ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication chap pap callin ppp chap hostname **********@hg.btclick.com ppp chap password 0 andywhite1 ppp pap sent-username ********@hg.btclick.com password 0 ****** ppp ipcp dns request ppp ipcp wins request ! no ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 Dialer1 ! ! ip http server ip http authentication local no ip http secure-server ip nat inside source list 102 interface Dialer1 overload ! logging trap notifications logging facility local4 access-list 102 permit ip 10.5.5.0 0.0.0.255 any log dialer-list 1 protocol ip permit ! ! ! ! control-plane ! ! line con 0 logging synchronous no modem enable line aux 0 line vty 0 4 password 3nt3r login ! scheduler max-task-time 5000 end
Check for "show ip nat translation" to check if your local PC has a NAT rule associated with it (try browsing the site, instead of pinging). make sure you have a valid dns server when you browse.. Also when browsing, you can enable "debug ip nat" and if required "debug ip packet" (might give all ip packet debug.. make sure you dont have too much of traffic on this router when you enable debug ip packet.. first try the first two options, and as a last resort enable debug ip packet..
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