All,
I have an IP address and I want to know all aliases within my organization that point to this IP. Is it possible?
For example I know the alias "TESTBOX" points to 119.119.119.119.
How can by just knowing the IP come up with the "TESTBOX" ?
Thanks,
M
Short answer: You can't.
You can try a reverse lookup on the IP address, but that will only show you the address that has been specifically allocated in the reverse DNS to that IP address.
Remember, aliases might exist only as an entry on a single machine's hosts file. They might also exist in a DNS server on the other side of the planet. However, if you're only interested in local DNS aliases, and your DNS servers allow zone transfers, then you can try listing every entry in every domain (eg. with host -l xyzzy.bigcorp.com) and searching the results for the IP address in question.
Related
I am now just starting to understand Httpcontexts and server side logic. Total beginner.
I have understood how to read the http requests from a client and get the remote IP etc.
I came across the hostname property.
I believe hostname and domain are completely different.
My undersanding is that stackoverflow is the domain name.
Given its widespread reach, stackoverflow can have multiple servers and hence multiple ip addresses.
So is there a way to determine to which server a client is requesting to in asp.net core 2.0?
You are correct that stackoverflow.com is a domain name. A domain name points to an IP address. That's called DNS. stackoverflow.com points to one single IP address not multiple. There's probably a load balancer at that IP address which then points you to an available server, which is internal you can't see that, but that's another story.
If you ping stackoverflow.com you get:
The whole point of DNS is to not use IP address but a domain name.
I'm not sure why you would want to see the IP. Maybe this stackoverflow question can help: Resolve HostName to IP
I have a theoretical question here on IP's.
We all know how to do a simple trace on a IP address ether in the cmd or via a web application to find a Physical Geo location linked to that ip. My Question is can this be reversed?
For example if i know the address of my house and i am on holiday how would i find my ip?
My line of thought is that there is a massive data base of ip to Geo location can you just reverse the search ? if not why and what would be the kinda of problems to overcome. Is there another way of doing it?
There is no way you can do it, because it is one-directional relationship. IP address does not depend directly on your physical location. Think about it that way: if you connect to your wifi from your neighbour's home, does it mean that your IP has changed? Your address depends on location only in the way that your ISP operates within certain area only and some IP address range is reserved for him.
In theory you could determine the IP address based on physical address if you had access to your ISP's customers database, but unless you are e.g. a police officer working on some case, you have no legal access to it.
The problems to overcome would be breaking into databases of every ISP in the world ;)
If you want to have access to your computer while on holiday, it's enough to have a static IP or use a service like dyndns.
I have got one firewall, with a public IP (dynamic) provided by my ISP.
As the IP is dynamic, I registered a domain in the service NO-IP as not to worry whether the IP changes anymore.
The problem:
Looks like my ISP is also giving a name for that IP, so when I resolve it (standard DNS configured, such 8.8.8.8) it would resolve the name in favour of my ISP.
The key point:
¿Is there any way to "OVERRIDE" the name given by the ISP with the one registered in NO-IP, in order to ALWAYS resolve to the no-ip name?
Thanks!
Whatever you did with NO-IP/DDNS, it will have no effect on Reverse DNS lookup. Reverse DNS is controlled by whoever "owns" the IP address, usually your ISP, so they would have to change the record according to your request (or sub-delegate it to your DNS servers) which they will almost certainly not do since you have dynamic IP address.
Apologizes if this is readily available somewhere but I'm not able to find it on google easily.
I'm wondering if an IP address will always have a corresponding domain name/URL. We are looking to remove acceptance of IP addresses and require our clients to pass a domain name instead but wanted to ensure that this is possible.
The answer is No.
An IP with a corresponding domain name/URL is strictly for readability purposes. You can map a particular IP to a domain name using a DNS server but it is entirely optional.
More info
is it possible to specify users IP addresses in Tsung?
Because in Apache logs, the users have the same IP address, the IP of the machine from which testing have been done. I want to specify somehow in Tsung, that it should generate new users with unique identifiers for being possible to distinguish them on Apache logs.
Some ideas?
vhost is only supported by jabber/XMPP plugin not by HTTP or others. Visit http://tsung.erlang-projects.org/user_manual.html#htoc58 to get more.
If you want to specify IP , maybe use more slave in your cluster ? But we can not specify IP per user .