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

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20
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2answers
13k views

Mac OS X: Please explain ifconfig output?

When I do ifconfig on my Mac, I get a list of the following interfaces: lo0 gif0 stf0 en0 fw0 en1 vmnet8 vmnet1 I wonder what each interface is. Also, which of these is the IP interface ? I don't ...
46
votes
15answers
35k views

Fastest method to determine my PC's IP address (Windows)

This may seem trivial but I'm looking for the quickest method to determine my PC's IP address within my network. This changes regularly as I connect from one network to the next via DHCP The ...
0
votes
2answers
4k 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 ...
1
vote
1answer
30 views

What will happen if two computers having same MAC address and same IP address in the network?

What will happen if two computers on the network are having same MAC and IP address? Assume 20 to 25 computers are present in the network and they are accessing the internet through single gateway. Is ...
9
votes
3answers
32k views

Whats the meaning of 10.0.0.1/24 address of my computer (ip addr - command)?

Whats the meaning of 10.0.0.1/24 address of my computer (ip addr - command)? 1/24 and not 0/8 10.0.0 range and not 192.168.10
0
votes
1answer
68 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 ...
3
votes
3answers
33k views

Configuring static IP address for using Remote Desktop Connection

I have a static IP address provided by my ISP. I have three machines at my home. I want to remotely access one of my machines (Windows Server 2003) using Remote Desktop Connection from any location. ...
1
vote
1answer
31 views

Mapping multiple IP Addresses to one DNS record

We are wanting to run 2 separate servers, one legacy server and one new server. All new users will be put onto the new server and current users will be left on the legacy server for now. We want to ...
98
votes
4answers
13k views

What's the difference between 127.0.0.1 and 0.0.0.0?

I understand that 127.0.0.1 points to localhost, and so does 0.0.0.0 (correct me if I'm wrong). So, what's the difference between 127.0.0.1 and 0.0.0.0?
1
vote
3answers
621 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: ...
1
vote
1answer
62 views

My Google account was used from IP addresses/locations I do not know

I checked my Google notifications and it's saying I accessed my Samsung phone from an IP address in a city I neither live in or have visited recently. How do I look up who or what it belongs to? ...
2
votes
3answers
876 views

Opera doesn't recognize 0.0.0.0 as localhost. Is this behaviour standard-conform?

Opera (version 10.10) under Linux (don't know about other OSes) does not recognize http://0.0.0.0/ as local address (http://127.0.0.1/) , while Firefox does. What is the difference between these ...
0
votes
0answers
16 views

Computer constantly losing internet connection Norton Scan says IP address disappears

One of my computers is constantly losing it's ip address and going offline and showing the yellow triangle over the little computer network icon. I am using a router for three computers and two I ...
0
votes
2answers
6k 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 ...
0
votes
1answer
49 views

Where in the world is 206.132.169.217?

I'm guessing some sort of location registration (at least specifying the country) is required for any public numeric IP address and tried ARIN since I believe this router is in Seattle. ARIN only ...
73
votes
5answers
7k views

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

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
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?
0
votes
1answer
53 views

Public IP from my ISP

I have dynamic ip address from my ISP and today I bought public ip from them. My question is: Do I need something from them to have this public ip? Do I need to configure anything on my router?
1
vote
0answers
16 views

Apache server in local computer needs to be run on internet

I have gone read your answer for "What is port forwarding and what is it used for?" question.Your explanation is great.I have one doubt please clarify that. I'm running a apache server application in ...
0
votes
0answers
55 views

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 ...
0
votes
1answer
350 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 ...
0
votes
1answer
48 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 ...
0
votes
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 ...
1
vote
5answers
608 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, ...
2
votes
2answers
19k 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
votes
1answer
112 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 ...
2
votes
1answer
39 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 ...
0
votes
5answers
220 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: ...
-1
votes
2answers
45 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?
0
votes
0answers
63 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 ...
0
votes
0answers
36 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 ...
0
votes
1answer
46 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 ...
-1
votes
1answer
98 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
votes
9answers
132k 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 ...
0
votes
0answers
44 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 ? ...
0
votes
0answers
66 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 ...
21
votes
1answer
48k 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?
16
votes
8answers
49k 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 ...
2
votes
2answers
34k 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 ...
1
vote
2answers
79 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 ...
5
votes
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 ...
1
vote
1answer
75 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?
6
votes
11answers
38k 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 ...
1
vote
3answers
623 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 ...
0
votes
0answers
144 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
136 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
vote
0answers
29 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
votes
0answers
66 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
308 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 ...