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

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How to Identify Class A, B and C IP addresses that look similar?

The question I had come up on my CompTIA test was Which of the following is a private Class B IP address? The choices were A 10.0.15.1, B 172.16.0.1, C 172.16.1.1, D 192.168.1.1 We know that within ...
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1answer
344 views

how to change ip address in the correct way on linux?

I'm working with wheezy. I have configured the /etc/network/interfaces file so that the wlan gets the ip address from the dhcp server. after that I have imposed a different static ip address in the ...
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2answers
4k 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 ...
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2answers
3k views

Detect an IP address of a Wireless Access Point device

I have a Wireless Access Point device (http://www.szedup.com/show.aspx?id=1706), which I am planning to put into BeagleBoard-xM, in order to achieve wireless communication (LAN). However, I can't find ...
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0answers
40 views

How to dynamically change IP address repeatedly?

I'm working on a spam detection engine (early stages). I've deployed my spam detection engine on a web server and to test it I need to access the remote resource repeatedly with different client IP ...
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1answer
31 views

Netstat returns strange looking foreign address

I am trying to understand what this foreign address means in a netstat listing: 195.sub-174-227-0.myv When I run netstat, some foreign address don't look like normal IP addresses. Are these IPv6 ...
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0answers
29 views

Remote Computer with no IP [duplicate]

I have a remote Windows 2012R2 server that runs a lot of important stuff. I, stupidly, accidentally, did an ipconfig /release on that server from the other side of the continent. Now that server no ...
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5answers
602 views

How quickly to find the first IP available in a LAN?

Suppose that I am in a LAN with the following parameters: IP: 172.16.20.X NETMASK: 255.255.252.0 GATEWAY: 172.16.20.1 DNS: 172.16.20.1 In order to connect to my LAN, I have to find, ...
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2answers
17k views

Pinging own machine returns an IPv6 address instead of IPv4

When I ping my own machine I get an IPv6 address: Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms I used to get the IPv4 address (eg. ...
2
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1answer
75 views

Alternative to 127.0.0.1 in hosts file

I have a bunch of websites blocked at the system level in my Windows 7 by using the etc/hosts file. So far, I've done it the usual way, by giving 127.0.0.1 as the website's IP address. However, I'd ...
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1answer
4k views

Does PirateBrowser hide my IP address?

Does PirateBrowser hide my IP address? It uses Tor so the IP should be changed, but when I looked on What is my IP, I saw the same address as before. Is there anybody who can explain it to me?
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1answer
31 views

Get IP address from one-to-one connection?

I have PC box with installed Windows Embedded which runs specific software and have no display and I can't connect one. It has stable ip address which was set years ago, but somehow it was lost by ...
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5answers
140 views

Why is ip address listed as 172.18.0.150/24?

Why is IP Address listed with this notation 172.18.0.150/24? I mean the ip is 172.18.0.150 only why it haves /24?, and then whatever what subnet that is on should be someone else's worries, no? 3: ...
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2answers
38 views

How do you track an email which has already been received by us? [duplicate]

Is it possible to track an email sent to me already? I want to track the IP address of the person who sent me the email using the email just sent. Is it possible, or is email anonymous?
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0answers
30 views

how to see all connected clients to a router/modem including linux and windows pcs

I have an ADSL+2 router and a couple of computers including an ubuntu box, a raspberry pi and an old win7 pc. win7 and ubuntu are connected via wifi and raspberry pi via cable. Now I'm wondring how ...
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0answers
31 views

How configure wpa_supplicant for different static ip addresses

I'm using Raspberry Pi and want it to connect at home to my "Home" network with 192.168.0.50 IP. If available my android network, raspberry should connect to it with dhcpcd dynamically. I found in ...
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1answer
26 views

Getting list of connected devices and types to a network without connecting

I'm using kismet to get a list of networks nearby and all the devices that are connected to them. I can get the MAC address off these devices, but I was wondering if it was also possible to get the ...
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1answer
57 views

Finding the IP Address of a Router in a Daisy Chain

I'm trying to forward a port to my home computer so I can SSH to it when I'm away from home. Because I cannot get a good connection to my modem/router, I have to connect a second router to it. My home ...
23
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9answers
121k views

How can I ping a range of IP addresses simultaneously

I have a bunch of machines on an IP address range which I want to ping simultaneously as a quick and dirty way of telling which ones are switched on. What (free) software can I use to do this? I'm ...
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0answers
20 views

Inter host name resolving

I am trying to setup a lily cluster where in it talks about Network Configuration which I am unable to understand.Kindly explain me the network configuration and how am I supposed to do this ? ...
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0answers
50 views

Bad assignment of IPs with custom bridge in Docker 1.6

I’m using Ubuntu 14.04 with custom bridge for docker. In Docker 1.5 assignment of IP addresses work correctly. This means gateway has IP 192.168.100.1, docker bridge has IP 192.168.100.2. When I ...
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2answers
1k views

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

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 ...
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1answer
40k views

What is Windows command to convert machine name to ip address and vice versa?

I need to know the ip address of another machine in a lan network. What is the Windows command for getting ip address from machine name and vice versa?
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8answers
45k views

What regular expression can I use to match an IP address?

With the following grep syntax I want to match all IP address in a file (from a ksh script) grep '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' file The problem: It also matches words ...
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2answers
29k views

How do I spoof the IP that my computer sends a server without using something like a VPN or proxy?

I want to spoof (not actually change) the public IP that my computer sends to servers. I don't care what it gets changed to as long as it changes, even by one digit. I don't want to have to use a VPN ...
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2answers
63 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 ...
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7answers
29k views

Show all machine's internal IP addresses (Windows XP)?

I have 3 Windows XP machines connection in a small home network. (2 of the 3 have no screen or keyboard.) What's the easiest way for me to find out each of the machines internal IP addresses? Is ...
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1answer
47 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
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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?
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3answers
360 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 ...
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11answers
35k views

Getting IP Address of Access Point

recently I turned my Router to a wireless access point for my home network. Unfortunately, I forgot to note down the AP's IP Address and Subnet. How do I reliably get the IP of my AP? Thank's in ...
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3answers
572 views

Print/list/check address blocks, matching a CIDR network prefix, from command line?

I am not much of a network person, but I understand that (IPv4) addresses can be written in a format like 127.0.0.1/16. I tried reading through Wikipedia's IPv4 subnetting reference, Subnetwork and ...
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0answers
60 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 ...
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1answer
76 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 ...
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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 ?
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0answers
53 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 ...
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0answers
211 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 ...
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14answers
17k views

IP Address vs MAC addresses

why do we need ip addresses if mac address is enough to identify the machine???
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2answers
81 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 ...
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0answers
88 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 ...
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3answers
80 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 ...
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2answers
73 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 ...
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2answers
280 views

See own sent email IP address in webmail

I have my webmail account (hotmail, which doesn't use private IP addresses for e.g.). How can I see what the IP address is of emails (under 'View message details') I send without cc'ing myself each ...
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0answers
53 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 ...
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3answers
1k 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 ...
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6answers
27k views

How to find ip address of my Asus RT-AC86U in Access Point mode?

I'm using an Asus wireless router model RT-AC68U and can connect fine to the internet using it wirelessly. I configured the router to be an Access Point, but having done so, I can no longer locate ...
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3answers
9k views

What is the maximum number of IPs that can be assigned to a given computer?

I really need to know this for a linux server, but since it also applies to client OSes, I figured the question should be posed here instead of server fault.
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3answers
5k views

Find all past desktop IP addresses

Is there a way to find some type of log file that saves all IP address that were assigned to a desktop? I changed an static IP of a desktop (switched it to DHCP) of mine and i can not recall what the ...
2
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1answer
228 views

Find if IP Address is in use

I'm trying to find if an IP address is in use. I don't want to rely on ping, as most of our hosts have ICMP echo and reply turned off. I'm looking for something that mimics window's "IP Address ...
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1answer
85 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? ...