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1answer
123 views

Access internal webserver with domainname points to external IP

We have a webserver on our LAN. Externally, we can use the public domainname (let's say business.com) to access the website. Internally, we need to use the local IP. We also want to use the public ...
1
vote
1answer
44 views

Router decision making w.r.t web browsers

Two different websites have been opened from two different browsers(for instance chrome and firefox) on the same IP Device(PC) connected to the same router. When the response comes from far end, it's ...
4
votes
1answer
213 views

How are IPv4 Addresses provided uniquely to domains?

this question has been bothering me for sometime and I've yet to receive a clear answer (it bothers me whenever I go to sleep). I would like to receive expert answers on this matter. Who mainly ...
0
votes
2answers
559 views

Why do I capture all DNS queries from everyone in the network when I port forward port 53 to my computer?

I'm seeing some things in Wireshark I can't explain. My setup is as follows: A router with a single global IP doing NAT for the devices behind it. I am also behind it with my computer. I port forward ...
0
votes
1answer
606 views

Is NAT loopback the only reason I can't view my own website from within my LAN? [closed]

I am new to this so apologies if this is the wrong place for such a question. I'm testing out a simple "hello world" website hosted at home. As we have not been assigned a static IP address by our ...
11
votes
2answers
5k views

Cisco ASA double NAT with DNS translation

I'm trying to set up double Auto NAT with DNS translation on Cisco ASA 9.0(3), and I'm having a few challenges with the DNS portion. I got double NAT working correctly, such that I have a server in ...
3
votes
1answer
1k views

Forcing Cisco DNS relay to send requests from behind PAT [closed]

I have a Cisco 1811 configured with PAT: interface FastEthernet0 ip address dhcp ip nat outside interface Vlan1 ip address 192.168.0.1 255.255.255.0 ip nat inside ip nat inside source ...