Questions tagged [ip]
The IP (internet protocol) is a protocol for transmitting data over packets ("datagrams"). It is the primary protocol of the Internet. "IP" may also refer to an IP address, the numerical address assigned to an IP-capable device.
2,824
questions
25
votes
3
answers
80k
views
How to map an IP adress to localhost?
I want to map the IP address 192.168.1.222 to 127.0.0.1 so that if I use 192.168.1.222 in the web browser or ping command I get the response (and that from my 127.0.0.1).
Is this possible via ...
- 373
25
votes
2
answers
69k
views
How do I setup a virtualbox server with a static ip?
I'm trying to get a Virtualbox instance running with a very specific networking setup.
Here's what I have right now:
I have a laptop running Ubuntu, hosting a Debian Virtualbox. My loptop regularly ...
- 351
24
votes
11
answers
73k
views
How do I find the IP address of a virtual machine using VMware Fusion?
Can I determine the IP of a virtual machine using VMware Fusion without actually entering the operating system running on the virtual machine? I'm looking for a menu option, command line, or otherwise ...
- 363
24
votes
5
answers
111k
views
How to make my IP publicly accessible to make my local Tomcat server public?
I'm working on my desktop computer. On this machine I also run Tomcat for my Java development so that I can visit my local address:
http://192.168.1.1:8080/myapp
Now I go to whatsmyip.com and get ...
- 351
23
votes
5
answers
177k
views
How to tell what MTU is being used in Windows XP
I'm suffering from a really weird problem where I randomly get "The connection to the server was reset" errors when trying to access web pages (HTTP error 12031 according to the Windows network ...
- 343
23
votes
5
answers
184k
views
How to get the IP address of a Unix machine?
I need to know the IP address of a UNIX machine. I can login to it with ssh but don't know the IP address.
Can anyone please tell me a command to get the IP address of the Unix machine I logged in ...
- 748
23
votes
3
answers
83k
views
how to hide public ip adress on irc channel
I have public ip address (for example 77.77.77.222). When somebody type /who on irc channel he sees:
[email protected]
How can I hide under a domain? For example [email protected]
- 341
22
votes
5
answers
9k
views
Is it possible to use global IP addresses without internet?
Is it possible to use global IP addresses without internet?
Obviously, private IP addresses should be used without internet access.
But I'm curious whether we can use any IP address as private IP.
Is ...
- 329
21
votes
6
answers
47k
views
How to find out all IP ranges belonging to a certain AS?
I want to know what IP ranges are belonging for example to the AS714.
How do I get this information?
I know how to do the reverse way, which is easy with whois. But the other way doesn't seem to be ...
- 4,988
21
votes
2
answers
52k
views
What is the difference between a link local address and an IP address in the private address space?
I read that a link local address is used when no other method for acquiring one is found. But the address space for them doesn't seem to be reserved under private address space, what is the ...
- 2,112
21
votes
2
answers
8k
views
ip versus ifconfig
After reading this answer, I began my quest for the difference between ip and ifconfig for *nix systems. I soon learned that ip had "more" features than ifconfig, but what's the real difference? Is ...
- 31.1k
21
votes
2
answers
47k
views
How to give a domain name to a local ip?
I have a Raspberry Pi with a local ip address of 192.168.2.x (where x is a number).
To make it easier to remember, I want to give it a domain name like mediacenter.raspberrypi. It is a domain name ...
- 313
20
votes
11
answers
7k
views
I am confused about the way a common home router works: Shouldn’t the MAC addresses be enough to forward the information to the correct destination?
From what I've understood, the way it works is something like this:
Why the necessity of associating private IP addresses to each one of the addresses connected? Shouldn’t the MAC addresses be enough ...
- 319
20
votes
4
answers
20k
views
How to communicate with a device that has an assigned “0.0.0.0” IP address?
I have an piece of industrial equipment that runs on a pretty basic OS called VxWorks. I usually communicate with the system for troubleshooting purposes by setting my IPv4 IP to the same range as the ...
- 201
20
votes
3
answers
28k
views
How to get a computer's internet (IP address) location using command line?
How to get a computer's internet (IP address) location using command line?
For example, using curl or wget?
- 2,049
20
votes
5
answers
6k
views
What is the actual IP address of my computer
I am testing out to see whats my IP address but depending on which website I used, I get different IP address. I am using a router
If I use this , My IP address is
If I use this , My IP address is
...
- 1,007
20
votes
3
answers
163k
views
Communicating with devices on a different subnet
Let me start this off by saying that I am very new to how IP Address / Subnet Addresses work, and networking in general. This stuff is generally mystifying, and I've had a hard time understanding ...
20
votes
1
answer
35k
views
Network devices getting an IP address in the 169.254.x.x range?
I'm totally confused by what's happening to my wifi router, so seeking help here.
Configuration
I have a modem/wifi router (Netgear CG3000D—let's call it main) connected to cable and configured with ...
- 303
19
votes
1
answer
3k
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?
- 311
19
votes
3
answers
111k
views
What is the I.P. address 224.0.0.22 for? [duplicate]
Possible Duplicate:
What are the purposes of the addresses in this ARP table?
I notice that ANY computer that I go to, if I do a arp -a command from a command line, I receive a reply back of 224....
- 1,946
19
votes
3
answers
89k
views
What's a loopback-address? I.e. 127.0.0.1
What is a loop-back address? 127.0.0.1 is a loop-back address, but what does this even mean? Please be very descriptive and give an example, as I'm having a hard-time understanding this.
- 1,099
19
votes
2
answers
23k
views
How does the router know which device to send packets to? [duplicate]
my question does not concern how it moves through the internet, but how it moves through the router to a certain device. All devices connected to a router in a home network have the same external IP. ...
Dan Webster
18
votes
2
answers
7k
views
How do DNS servers work?
I know that a domain name is resolved by a DNS server to an IP address, which is then used to reach the requested server. I'm slightly embarrassed that I don't know some of the details of how this ...
- 291
17
votes
2
answers
22k
views
How to access 192.x address space from 10.x address space?
I have a child router with 192.x.x.x address space. On any machine here I can access the 10.x.x.x address space. The reverse is not true. A machine on 10.0.x.x cannot ping 192.168.x.x. How do I ...
- 262
17
votes
3
answers
22k
views
What do different types of LAN IP addresses mean?
I have seen LAN IP addresses in the following ways:
10.0.0.*
192.168.0.*
192.168.1.*
192.168.2.*
127.0.0.* (This one is normally with a 1, and I'm not sure if it is LAN, since I see it normally ...
- 944
16
votes
17
answers
37k
views
Can the Internet work without DNS?
If we have an IP-based system of identifying nodes on the Internet why is there a need for DNS?
16
votes
4
answers
12k
views
Is my router's IP address really public?
I have a common home network consisting of a wireless router with many devices connected to it. I understand that because of NAT, all devices attached to the router connect to the outside of it via ...
- 271
16
votes
4
answers
6k
views
How do routers get their external IP address?
How do routers get their external IP address? Is it assigned by a central service? Is it decided by the ISP? I have googled this problem, but have only found how to change my IP address, which is not ...
- 185
16
votes
6
answers
8k
views
Why don't we have a usable IP address in 127.0.0.0?
From theory, each part of an IP address is a number between 0 to 255 (256 usable slots in total).
But why is 0 not used in any IP addresses in their 4th part and they always start from 1 in IP ...
- 633
16
votes
8
answers
116k
views
How to get my external IP address (over NAT) from the Windows command-line? [duplicate]
The Windows "ipconfig" command can only show me the parameters from the Ethernet interfaces from my machine (even with the ipconfig /all argument). It can show detailed information about the interface,...
- 30.5k
16
votes
5
answers
107k
views
How can I tell if my IP is static or assigned by DHCP on Windows 7?
I don't know if my IP is static or assigned by DHCP. How can I find out which it is? I'm running Windows 7.
- 8,503
16
votes
1
answer
2k
views
Why are there ping replies from within 172.31.0.0/16?
Today I accidentally discovered, that I can ping addresses in the 172.31.0.0/16 subnet and get an ICMP reply. I tried a few random ones, it always got replies. After checking the routing table and a ...
- 413
16
votes
4
answers
123k
views
Setup static IP under Ubuntu
How to setup static IP address under Ubuntu 14.04 Trusty?
(NOTE, the question was asked for "14.04 Trusty", but it is still working for now, 16.04 LTS Xenial)
My setting is not working. What special ...
- 8,851
16
votes
6
answers
124k
views
How to find IP address of router connected to another router?
I'm trying to setup two routers in my home network, and I'm confused here.
My system looks like this:
So the router 2 is connected to the line. And I'm (my PC is) connected to router 1. When I type ...
- 589
16
votes
8
answers
143k
views
Windows 10 can't resolve hostnames - ping with IP works but not with hostname
Facts:
The browser doesn't load any pages, whether they are addressed with IP or hostname.
ping google.com doesn't work, returning Ping request could not find host google.com.
ping 216.58.209.78 (...
- 181
15
votes
2
answers
15k
views
Why am I seeing multiple different IP addresses reported as my public IP? [duplicate]
Could anyone explain why these sites are showing me as having different public IP addresses?
www.whatismyip.com - 46.19.227.251 as my IP
showmyipaddress.com - 46.19.227.253 as my IP
www.ipchicken....
- 161
15
votes
2
answers
2k
views
Application requires IP address, need it to go to domain
We use a (poorly-designed) application that requires the IP address of our corporate office which has a static public IP address. However, when our failover internet kicks in, it obviously has a ...
- 321
15
votes
5
answers
71k
views
DHCP Reservation vs Static IP address
So after browsing some websites, some people are telling me that static IP address is the best. But others say the DHCP Reservation is just as good if not the same.
So what is better? Or are they ...
- 189
15
votes
3
answers
35k
views
How do routers assign IP addresses?
How does a router assign an IP address? Is this random or is there a set method?
It seems that the same device – regardless of the time it was connected – seems to get the same IP assigned. Does the ...
- 8,328
15
votes
4
answers
28k
views
How exactly does a proxy work?
If I want to connect to say, IP 100.100.100.100, Port 80, my computer will send a tcp packet with this adress into the wire.
Now If I use a proxy server say, 200.200.200.200 Port 8080 (such kind of ...
- 579
14
votes
7
answers
99k
views
Unable to ping a Windows machine from Linux
I have Windows installed on my laptop, connected to the router wirelessly with IP 192.168.1.5. My desktop is running Linux, connected to the same router (wired) with IP 192.168.1.2. When I do a ping ...
- 243
14
votes
1
answer
6k
views
Can someone explain a tracert to my own public IP?
I'm trying to learn about ip routing and I'm am trying to trace route my own public IP. I just searched my ip online and tried it. the results I got were
> tracert [my_public_ip]
1 <1ms 192....
- 357
14
votes
7
answers
13k
views
Identify an unknown IP in our network
I have a network containing 20 clients. I assigned IP range 10.0.0.1 to 10.0.0.20 to them. When I do an IP scanning I see someone using 10.0.0.131 in VMware. How can I find out which IP is this IP ...
- 285
14
votes
8
answers
87k
views
Command to find network interface for IP
With ipconfig I can show the list of network adapters and their settings, e.g. the IP address.
I'm looking for a reverse command that displays the name of the network adapter for a given IP address.
...
- 6,085
14
votes
4
answers
29k
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.
- 609
14
votes
5
answers
33k
views
Unable to ping local machines by name in Windows 7
I'm having a strange (and persistent!) problem with pinging local machines on my network by name. I believe my machine (Windows 7 64-bit) is the only one having this issue. This is over a wireless ...
- 2,179
14
votes
12
answers
38k
views
Simplest way to check for dynamic IP change
What would be the easiest way to find, with a script, if my IP address has changed?
Background info:
I have a standard home cable modem connexion, and my ISP assigns me a dynamic IP. It changes ...
- 680
14
votes
2
answers
84k
views
How to get the real IP address of someone using a proxy?
I was researching digital goods and security when I stumbled upon this company. One of the services they provide is "Real IP". They claim to be able to get the real IP address of users even when ...
- 4,091
13
votes
8
answers
13k
views
Is it possible to find a printer's physical location in a building by its IP adress?
I am in a school with probably 200+ computers and I did an IP scan among a certain range and found three or four printers. I was wondering if it would be possible to find these printers in the school, ...
- 4,394
13
votes
2
answers
6k
views
Is the public IPv4 address and default gateway for my home router owned by IANA?
In the web interface for my home wireless router, I can see the following information:
For the public IPv4 address, I see:
https://myip.ms/info/whois/10.206.55.182
And for the Default Gateway I see:
...
- 550