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.
Related
I'm building a scraper, and in order to not get banned, I have to make my requests from different IP addresses. Right now I'm doing that with a VPN, but it has several issues.
As I was reading about the topic, everybody was advising the methods I currently use, but those have their own problems.
I noticed that connecting to the same network from different devices gives different IP address. Furthermore, the same device connected to the same network, through WiFi, or through LAN gives different IP address. I'm not too experienced in networks, and don't know if those different addresses are really different, or will reveal that the requests are coming from the same network, but may be a good idea.
And if it is, how can I take advantage of it? Is there a way to programmatically create "fake devices" from the same device, getting different IP addresses? (I'm thinking about VMs or something)
Your public IP address is the one allocated to you (or to a group of Internet users you belong to) by your Internet provider.
On your side of your Internet box, the IP addresses are local addresses. Those local addresses cannot be seen from the outside. So you can change your local IP address as much as you want, the outside world will see you with the same IP.
Your solution could be to rent a server on the cloud and run your scraper on it.
can one location have more than 1 IP address? I have 2 IP addresses and need to know if they originate from the same source. Thanks
You're missing clear definitions of "location" and "source" in your question but lets go with the assumption that you mean "physical machine" for both (as it's obvious that multiple machines will have different addresses and that a single machine can change its IP address over time).
In that case, the answer is yes. The operating system may bind as many IP addresses to a physical network port (and a single MAC -- the physical addressing used by Ethernet) as it wishes.
Binding multiple IP addresses was the standard way of doing "virtual web hosting" before HTTP/1.1 arrived with the "Host" header. The provider would use DNS to map different host names to different IPs on the same network (usually the same subnet as well) and then assign all of them to the same interface. The webserver would get address information from an incoming connection and based on the local IP address would know which virtual host was being accessed.
This led to a higher-than-typical use of public IP addresses but the practice is now gone with the proliferation of HTTP/1.1.
I'm not sure how Windows presents it, but Linux will present a physical interface with multiple IP addresses as multiple logical interfaces such as "eth0", "eth0:1", "eth0:2", etc. Each logical interface has a unique IP address even though they share the same physical interface.
This is hard to tell. Especially it is hard to tell if these IP addresses are from different times. Today I may have a different IP address than tomorrow.
Even they are from the same time, a load balancer im my internal equipment might send my packets over the fail-over line if the 1st one is overloaded or broken down.
One network adapter normally has only one IP address at once and a typical end user only has one network connection active, but even then the IP address can change. The user could switch from wireless to wired and back or a power outage might reset the ISP's DHCP server (assigning everyone a new IP address).
If you want to identify the user even if his IP address changes, you need to identify the user by his session id, stored in cookies. As two users can have the same IP address (a whole company could be behind a NAT), you should never rely on IP addresses for identification.
Say if i have the IP of a user x.x.x.x , then using the IP can i track all the activities that the user is doing ? How can i do this ?
how can i check which web pages is the user opening or something similar
please guide
No, you cannot. Traffic is point-to-point and knowing the address of a point is not enough to know the traffic going to/from that point. It's like asking if you can read someones (snail) mail just because you know their house address.
In order to "snoop" that fully, you need to be in the middle where all traffic passes through your node (liking having the postman give you the mail and then you giving it to the owner of the house).
If you have a machine, the traffic from the user is reaching it (e.g. you're connected to the same switch) then probably yes. The most trivial way is using network sniffer (Wireshark for windows, tcpdump for Linux).
However if the used surf SSL secured site (a.k.a https) than you will see only encrypted content
Geolocation is not accurate because the primary source for IP address data is the Regional Internet Registries. They do not hold a database for information about individual IP addresses, but information about ranges of IP addresses that have been assigned to certain organizations. Such an organization has free reign over the IP addresses they get and they do not need to give location information to the RIRs. In other words, only your ISP knows your exact location. If you want to find the location of a user you will have to ask your ISP, and they will most probably deny your request.
You can't sniff packets sent from someone, unless you are part of the same subnet - you would have to be connected to the same switch and be on the same Virtual LAN as that user. Even if you somehow find the physical location of a user and connect to the same switch, the ISP has most likely sat up port security, which would deny access to your MAC address.
In conclusion, unless you are already connected to the same switch, you can't track that user's activities.
If you are connected to the same switch, you can install one of the popular packet sniffer utilities such as Wireshark and set it to promiscuous mode.
So, my work has several networks and small business locations all with an internet blocking server. The managers all rotate and want freedom from the server, AKA static IP addresses outside the range of DHCP.
my problem is that they all need access to each others network, so setting up an alternate configuration is not that useful. How would I create an application that will change my users IP Address so that it will match their static IP at the location they changed it too?
This is just their internal IP address on their local machine, and each location's network has a static ip waiting for them. Just have to change their IP Address.
Is there a batch file command that can help achieve this? if not maybe writing a script or going into a larger application?
Doing this on the machine itself will be difficult. It needs to be able to recognise each network, and what will it do when connecting to an unknown network like a home network or a hotspot?
I think it would be better to let the DHCP server hand out static addresses from outside the normal dynamic address pool. That way everything keeps working automatically while also giving static addresses to the machines.
I know this is not a real answer to your question, but I hope this gives you an alternative.
I'm currently revising for an exam and I'm stuck on a question which is:
"Explain the static and dynamic host configuration approaches."
I'm unsure if the answer is correct but what I've write is this:
static host configuration are hard-coded addresses that will only work on one specific network segment, which is intended for stationary computers
dynamic host configurations work best with portable computers like laptops that move between network segments.
that's my answer, could anyone help me to understand if this is correct or not?
You are correct about the difference. But there s a lot more than what you have stated.
DHC : Used to configure IP addresses automatically to the systems without any intervention of network administrator.
For Eg. When you register for a new internet connection, your ISP(network administrator, in this case) will provide you access to the DHCP server which ll allot you the IP address on the runtime.
To prevent the same IP address being assigned to two different computers
Also the main use is, ISP s will have a range of IP addresses with them. You ll be assigned any of their IPs dynamically by DHCP Server when your lease time expires for a particular IP that have been assigned earlier
SHC : Used to manually configure the IP addresses to systems.
When you knew how many systems are going to be present exactly inside the network
And when you want to uniquely identify a system in the ntwk using its IP address
For Eg. When you configure LAN in your house, between, say, around 4 computers. You will know exactly the number of systems in the group. So you don't have to allot a DHCP Server to allot the IP addresses for these 4 systems. YOu manually configure them
Hope that helps :)