01-29-2004 09:18 AM - edited 03-02-2019 01:14 PM
I have read all the documents on IOS NATing and I still have a few questions for my situation.
I have a 3745 with a T1 with Serail Interface 0/0 IP Address = 172.x.x.x on our side and 172.x.x.x on USLec side.
I have a range of vaild IP Addresses of 66.129.x.x thru 66.129.x.x
I need to setup a VPN tunnel to the corporate Headquaters of x.x.x.x and only allow them to manage the device, let that IP address back in.
I have Several Interface VLANs on the inside to seperate out Servers, Users, Phones and Management.
I want to only use one, PAT, of my addresses for all users to reslove to when getting out to the internet, etc.
I want one to corralate to a real address so I can manage it from the headquarters.
Don't I have to make one of the FE0/0 or FE0/1 a real address 66.129.x.x and the other an internal address 192.x.x.x to amke this work? So the FE0/0 can be the outside and FE0/1 can be the inside.
If there are any good docs on this I will start there. If I am not amking any since and you want mode details please let me know.
Thanks!
01-30-2004 02:36 AM
Hello,
you can best use NAT overloading for your purposes.
Assuming that you want to use FE0/0 as the inside and FE0/1 as the outside interface, and that your hosts are on the internal network 192.168.1.0/24, and that your global IP address range is 66.129.1.0/29, your configuration would look like this:
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
interface FastEthernet0/1
ip address 66.129.1.1 255.255.255.248
ip nat outside
!
access-list 1 permit 192.168.1.0 0.0.0.255
!
ip nat inside source list 1 interface FastEthernet0/1 overload
Check this link to the Cisco NAT Support Page:
HTH,
GP
01-30-2004 04:04 AM
Thanks for the info.
So if I have inside subnets of
VLAN 1 192.168.0.1
VLAN 2 192.168.1.0
VLAN 100 192.168.2.0
VLAN 102 192.168.3.0
and 192.168.4.1
and my serial interface is 172.x.x.x
then I would just use the ACL of 192.168.x.x to cover only those subnets that I want to traverse the interface of FE0/1 does FE0/0 have to be in the same subnet as all the rest of my different networks?
Thanks again
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