05-09-2017 05:22 PM - edited 03-12-2019 02:20 AM
Can someone please help me with this ASA? I'm new to working on ASAs and trying to learn more about them. This is just a test lab ASA for home environment purposes. Security practices aren't my main concern right now. I am just trying to learn how to configure it.
Right now, I have a pretty much a blank ASA, aside from my interfaces and NATreferences.
interface Ethernet0/0 object network Permit_Secondary_LAN |
Please let me know if I am missing anything. Right now I cannot ping the internet from an inside interface, but I can from my outside.
ciscoasa(config)# show nat |
All help is greatly appreciated. Thank you!
05-09-2017 06:47 PM
you can't ping internet from inside interface, If you want to test internet connectivity connect a PC behind Primary_LAN interface you should be able to ping/access internet sites.
05-09-2017 07:34 PM
Okay, I didn't know that. I tried pinging from the router connected to the ASA (10.1.0.2)
Type escape sequence to abort. |
It couldn't even talk to the DNS server (8.8.8.8), which I am assuming because it cannot get out past the ASA.
05-09-2017 07:45 PM
Shawn,
I see some issue with NAT, Do you want to translate LAN subnets with pat-pool or Outside interface IP?
you can try this
nat (Secondary_LAN,Outside) source dynamic Permit_Secondary_LAN interface
nat (Primary_LAN,Outside) source dynamic Permit_Primary_LAN interface
05-10-2017 04:10 PM
Ashish,
Changing the NAT statement didn't change anything. What I am trying to do is equivalent to the router side when putting in a nat translation [ip nat inside source list access-list
05-10-2017 05:04 PM
Make sure you have an access list that allows icmp reply, because by default ASA doesn't inspect icmp packets. By default Asa only inspects TCP and udp. You can create an access list allowing icmp and apply it to ASAs outside interface.
You can use packet tracer utility to check where the packet is dropping.
packet-tracer input secondary_lan icmp x.x.x.x 8 0 8.8.8.8
replace x.x.x.x with source address
also so if you are trying to ping an outside address like Google DNS from a device that's behind the firewall just make sure that device has a default gateway configured
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