06-14-2016 03:26 PM - edited 03-05-2019 04:13 AM
Hey everyone!
I need some help, i am new to using Cisco routers (as far as setting them up my self) so forgive me if this is something simple that i am over looking/not understanding.
I have a cable internet from cox.
They gave the the ip address below....
IP: 98.191.**.147
DG: 98.191.**.129
SNM 255.255.255.224
the ip address is the ip address that will connect the router to there modem.
On the lan side i have the following
Ip address 10.0.4.1
DG 10.0.4.254
SNM 255.255.255.0
What i need to do is take 10.0.4 network and tell it the inter net is at the 90.191 network address and connect to the internet that way.
i have been watching some youtube videos on how to do this but there is something im missing and i cant figure it out.
If some one could help me shed some light on this i would greatly appreciate the help!!!!
06-14-2016 03:31 PM
as of right now i get no internet connection on the 10 dot network.
06-14-2016 03:40 PM
outer#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.0.4.1 YES manual up up
FastEthernet0/1 98.191.**.147 YES manual up up
Vlan1 unassigned YES unset administratively down down
Router#
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
ip address 10.0.4.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 98.191.**.147 255.255.255.224
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Router
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
ip address 10.0.4.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 98.191.**.147 255.255.255.224
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
06-15-2016 07:35 PM
Hi
In order to give access to Internet to your lan network, you need to do natting and add the default route
Below the config
Interface f0/0
Ip nat inside
!
Interface f0/1
Ip nat outside
!
Ip access-list extended NAT
Permit ip 10.0.4.0 0.0.0.255 any
!
ip nat inside source list NAT interface f0/1 overload
!
Ip route 0.0.0.0 0.0.0.0 98.191.**.129
how this is clear.
PS: don't forget to rate and mark as correct answer if this solved your issue
06-17-2016 08:47 AM
New Update as of 6/17/16
Router#
Router#show running
Router#show running-config
Building configuration...
Current configuration : 753 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 10.0.4.254 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 98.191.**.138 255.255.255.224
ip nat outside
duplex auto
speed auto
!
ip classless
!
ip http server
ip nat inside source list 1 interface FastEthernet0/1 overload
!
access-list 1 permit 10.0.4.0 0.0.0.255
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
Router#
i can ping 98.191.**.147 and get a 100% success but i try to ping 10.0.4.55 (the other pc) i get a 100% fail.
In other words i get single directional traffic
06-17-2016 09:53 AM
On your acl for nat you need to deny traffic from your lan network to your lan network. It had to be the first statement before the permit statement
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