An IP address is a unique network-level identifier assigned to a network-enabled device.

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7
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2answers
1k views

Writing a service to find the public IP address of a computer, from scratch [on hold]

I am aware of services like http://whatismyipaddress.com/ that allow a user to find his public IP address. What I'd like to know is, HOW such a service gets written from scratch? I don't need the ...
1
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2answers
40 views

Is my network traffic really routed abroad if traceroute says that my traffic is routed through servers with foreign IP addresses?

My ISP is owned by a company that resides in our neighboring country. I have noticed that when I do a traceroute to a server that I know is placed in the same country as I live, I can see some hops ...
1
vote
1answer
28 views

Make PC Accessible over Internet using Public IP [duplicate]

I want to make my PC as webserver, file server which should be accessible over internet. I have a public IP, how can I use it to make my PC accessible through internet? Any help?
17
votes
1answer
2k views

Pinging different IP address than what I entered [duplicate]

Can anyone please explain why CMD pings a different IP address than the one I am searching for?
0
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3answers
114 views

How can you calculate IP address subnet ranges?

If you're given: Number of needed subnets: 2 Network Address: 195.223.50.0 I can answer the following: Address Class: C Default Subnet Mask: 255.255.255.0 Custom Subnet Mask: 255.255.255.192 ...
0
votes
0answers
22 views

Accessing Asus RT AC68U while on Access Point

I've been trying to access my Asus router which has been set to access point with no avail. I tried softwares like Agnry IP Scanner and it just doesn't exist! I disconnected the router from the home ...
1
vote
1answer
40 views

Tool to group a list of IP addresses into IP ranges

I look after a website that is currently being flooded with HTTP requests from different IP addresses but all using the same user agent string I've grepped the log file and now have a file with all ...
1
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0answers
13 views

How to use IP address after getting ip pool from irinn?

How to use IP address after getting ip pool from irinn ? What is exact procedure after IP registration till getting ping from outside network ?
0
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0answers
32 views

Static LAN IP address not being saved. Always reverts to DHCP

I am running Windows 8.1 (64 bit) and going to my local network connections, right clicking and then going to properties of my Broadcom wireless connection I change from DHCP to static ip (IPv4) by ...
2
votes
0answers
90 views

Why does my cable modem have two IP addresses?

The internet setup at my home is as follows: I have a cable modem (192.168.100.1) connected with a coaxial cable. The cable modem is connected to a wireless router (192.168.1.1) via an ethernet ...
0
votes
2answers
61 views

How do I know if two machines are on same LAN?

I am very poor with Computer Networks, even though I took class in my grad school. I keep forgetting about subnets and masks and what not! Currently, I am playing with Docker and Erlang and was ...
0
votes
0answers
60 views

How to setup my VPN Server?

I had successfully setup vpn server on windows 8.1! Since, I am in a university, many sites are blocked, so in my vpn server I have connected through another vpn (OpenVPN, Psiphon etc.) But now I want ...
0
votes
3answers
78 views

What is the IP address of my home computer from the perspective of the outside world? [duplicate]

What is the IP address of my home computer from the perspective of the outside world? I need this in order to grant myself permissions to connect to a mysql database on a work server. I'm working on ...
1
vote
2answers
55 views

What IP to listen on to see web server from outside LAN?

Okay, so I'm semi-new to networking and to back-end web development, and am learning Flask presently. I just turned on a basic little HTTP server on my laptop ("Hello World!") and am running it on ...
1
vote
0answers
42 views

DHCP server in separate broadcast domain and option 82

Recently studies of DHCP servers raise some questions, which I cannot find the answers to using Google. Many documentations state: "If there is only one subnet declaration, and no network interfaces ...
1
vote
3answers
399 views

Mapping one IP address to another in the 'hosts' file [duplicate]

The hosts file (%SystemRoot%\system32\drivers\etc\hosts) lets you make google.com point to, for example, 127.0.0.1 on your local machine, but what if I wanted to make, say, 192.168.1.5 point to ...
1
vote
1answer
69 views

What does it mean if a public IP address looks like a private IP address?

For example, I go to http://whatismyipaddress.com/ and it tells me that my IP address is 192.X.Y.Z. What does this mean? Isn't that a private IP address? How can I find my real public IP address? ...
0
votes
1answer
67 views

Actual Public IP different from Public IP shown on ip lookup

When I test my connection on services such as whatsmyip.com, I get 112.134.xx.xx as my public address. When I check the ADSL connection status on my router, it shows a totally different IP address ...
4
votes
4answers
269 views

Comparing the first part of a string in Excel

I'm trying to create an automated function that will determine the class identification for IP addresses after you input it into Column A's input section by checking the first section of the address. ...
0
votes
0answers
166 views

Add second static IP under Ubuntu 14.04 Trusty

I am trying to add a second static IP-Adress to my Ubuntu 14.04 server installation. But so far I haven't had any luck with that. My first attempt was to add a virtual eth0 device to ...
0
votes
0answers
27 views

Browse web via multiple ips without proxy

I'am running a windows VPS and have purchased several ips for it. How can I browse the web from the server via one of the ips apart from the one set as default by the hosting company's router but not ...
0
votes
2answers
70 views

How do I find all known IPs for a given domain in Linux?

I am a developer on a project that uses amazon servers for testing. I am switching from using FoxyProxy to routing with iptables because it is more convenient. The trouble I ran into is that when ...
0
votes
1answer
132 views

Web Server Public ip address to be seen on webpage

I have a Raspberry Pi behind NAT running Linux and hosting a web server. I access the web page from outside via Yaler utility as I have Dynamic public ip address. Is there a way to show my current ...
0
votes
1answer
503 views

How to find the ip-address of an RT-N66U accesspoint

I just setup an Asus RT-N66U wireless router with an IP address of 192.168.1.3. After I got it working, I connected it downstream from a TL-R600VPN router, disabled its DHCP and then changed it (Asus ...
0
votes
1answer
47 views

Internet access without NIC card?

If have a USB modem dongle for INTERNET connection. Can i access INTERNET from a brand new desktop/laptop without NIC card using this dongle? I feel that the dongle is just a modem ( with a DHCP ...
0
votes
2answers
51 views

Can a website tell what device you're using? [duplicate]

If I were to visit a website on different occasions and from different IP addresses but from the same device, could a website potentially tell? If so, would deleting cookies prevent this?
2
votes
1answer
85 views

windows 7: assign static IP address [duplicate]

I want to connect two laptops with a crossover Ethernet cable, in order to synchronize them with ntp. One laptop runs Windows 7, the other one Ubuntu. On Ubuntu, in order to assign a static IP ...
0
votes
0answers
68 views

Find the remote VPN address of the network to which I am connected

I am getting Internet from a Huawei 3G data card in Windows 7. I just read about being anonymous on the Internet so thought I'd give it a try. I used PD Proxy for that, using a username and password, ...
1
vote
2answers
81 views

What must be done to guarantee continued IP address ownership? [duplicate]

There is a pretty high-level of guarantee that we can have continued possession of a chosen domain name as long as we renew it from our registrar (and provided that our registrar is not ...
13
votes
9answers
2k views

Why are Ethernet/MAC addresses needed?

I don't understand why Ethernet MAC addresses are needed. Can't all computers just be connected to the unified network and use IP addresses to communicate? For example, there is a following mechanism ...
0
votes
1answer
105 views

How can I tell if my ip address is static or not (Mac OS X)?

Well everything is in the title really... :-) I want to exclude my IP from my GA account but there is no point in doing that unless what I get from http://whatismyipaddress.com/ for example, is a ...
1
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0answers
104 views

Batch check if IP is within specific range

I'm trying to make a batch script to get local IP-address of active NIC (could be wireless or local). To get IP adress I have used following line: FOR /F "delims=[] tokens=2" %%a in ('ping -4 ...
-1
votes
1answer
162 views

Visiting website with different IP Address each time? [duplicate]

I want to visit a site repeatedly, with different IP address every time. I tried using Tor to accomplish this (Use New Identity); It worked but it's too slow. Is it possible to arbitrarily reassign ...
0
votes
2answers
40 views

IP address pointing to the router instead of the domain

I set up a domain and I set the IP address to the IP of my server through whatismyipaddress.com. When I send a request to that domain, it connects me to the router instead of the computer. Does that ...
-3
votes
3answers
352 views

My IP Address is Wrong?

I have 2 computers, and I checked the IP address on each computer, by going to this site. On both computers, the IP address is the same?! Isn't each computer supposed to have a unique ip address? ...
0
votes
0answers
112 views

Arch Linux device with static IP address, new router not finding the device

I have a device running Arch Linux on my network (Raspberry Pi to be exact) and I do not have a cable for the display. I typically used it by ssh client and had it configured for a static IP address ...
0
votes
3answers
289 views

Getting External IP via PowerShell

I would just like to Get External IP via Powershell Just IP address no header or anything. I try many things such as (Invoke-WebRequest ifconfig.me/ip).Content but it has this extra second line ...
0
votes
1answer
137 views

check if two IP addresses belong to the same router

I have several hosts from which I traceroute to the same destination. Is there a way to determine whether two IP addresses belong to different interfaces of the same router? Is it enough to check if ...
1
vote
2answers
172 views

Assigning same MAC Address to access points [closed]

I am working on a mobile application project which works on a local wireless network located on multiple different geographic locations(some supermarkets). In that for detection of that particular ...
2
votes
1answer
349 views

Will Windows renew IP address sometime after “ipconfig /release”?

On a Windows 2000 PC, I did a "ipconfig /release" to disconnect it from the network. After about 6 hours, I checked it again and it was still disconnected. But then about 17 hours after that, I ...
0
votes
2answers
908 views

Difference between private IP and public IP? [duplicate]

What is the difference between public IP and private IP? Does each machine have both a private IP and a public IP? Who assigns public and private IP? and how can a machine having only a private IP ...
66
votes
5answers
6k views

Why did the IETF specifically choose 192.168/16 to be a private IP address class? [closed]

Why did the Internet Engineering Task Force (IETF) choose 192.168/16 to be a private IP address classand not something else? Why specifically 192.168/16 and 10/8 and 172.16/12 and not 145.243/16 for ...
0
votes
1answer
220 views

Hide IP from flash objects

Running a flash plugin will make it able to retrieve my real IP address even if I'm using a proxy. Is there a way to prevent that?
-3
votes
2answers
146 views

Switching to IPv6 - Do I need a router? [closed]

In the future, since every IP (IPv6 adress) is going to be global, we don't need to use NAT. So basically, why do I need a router on an IPv6-only global network? Why not just replace my router with a ...
0
votes
0answers
81 views

/etc/ethers is not being read by dnsmasq

I recently configured dnsmasq on Raspbian, and everything was working perfectly except that /etc/ethers wasn't being read (yes, I did uncomment read-ethers and remember to restart dnsmasq) - the ...
0
votes
0answers
26 views

I need a dynamic script for changing Host IPs depending on computer name that I can shoot over the network

Does anyone know how to make a Batch/Script, that I can modify, for looking up the host computer name and build the IP and gateway off of it. we have a simple setup of computer name refers to ...
0
votes
3answers
3k views

I changed the IP address on my router and now can't access the web interface

I changed the IP address on my bt home hub 5 router from 192.168.1.254 to 192.168.0.254 because I was trying to connect to an IP camera - big mistake. Now I can connect to the router but there is no ...
1
vote
0answers
99 views

Can't get access to my internal IIS Server?

Before I could get access to my IIS Server using its static private IP address (on the Windows Server 2012 itself), but now I can only access the IIS Server web page using its localhost and 12.0.0.1 ...
0
votes
2answers
2k views

is it possible to get IP address of a wifi that you are not connected to

Just like the question states. Is it somehow possible to get the IP address of a network that you don't have access to? For example, if you click the little wifi button on your task bar, and ...
-1
votes
2answers
13k views

Resetting ip address gives “media disconnected” error message

I am using my windows 8 laptop and I am successfully connected to my router and can access my internet with no problem. I want to get a new ip address. I opened up the command prompt and then typed in ...