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.
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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 ...
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Why does pinging 192.168.072 (only 2 dots) return a response from 192.168.0.58?
I mistakenly missed the dot off of an IP address and typed in 192.168.072.
To my surprise I connected to a machine at 192.168.0.58
If I ping 192.168.072 I get responses from 192.168.0.58.
Why is ...
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localhost and 127.0.0.1 working but not ip address in wsl windows 10
I recently switched from Linux to WSL2 (Ubuntu 20.04) on Windows 10. When I run any NodeJs application or a server like Apache or Nginx everything works fine on localhost or 127.0.0.1 but doesn't work ...
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Windows command that returns external IP
Is there a command by which I can find my external IP of my router or my NAT\DSL Router, etc., eliminating the need to visit whatsmyip.net or similar.
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Is it possible to host a web server from behind a NAT
My PC is behind a NAT router that has a public IP address. If I want to host a website then I believe I need a domain name which I can purchase from some site which would pledge to resolve all DNS ...
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What is the exact use of a MAC address?
I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
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Add a static IP alias to a DHCP interface on Windows 8 (and above)
I have a Windows 8 machine that has only a single Ethernet port. It needs to use DHCP and also needs a static IP. Each IP is in a different subnet, and each serves a different, incompatible purpose.
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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
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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 ...
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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 ...
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Which IP address do I use to access my server?
I'm running a Samba server on my MacBook and I've also set up port forwarding to said server from my router.
My public IP is 106.51.x.x (according to google and a few other services) and my Mac's ...
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Are IP addresses with and without leading zeroes the same?
I have a security system and the network setting only allows a three-digit IP address. I can't set it to 192.168.2.100, instead I have to use 192.168.002.100.
Are these two IP addresses different? Do ...
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Can you grab any IP address on the Internet?
On a personal network (LAN) one can simply grab an IP address. If you choose the same IP address as an existing client, you get problems. There are companies like IANA and ICANN that are in charge of ...
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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 ...
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How to get assigned IPs by hostednetwork?
I just started using Microsoft Virtual WiFi or hostednetwork from Command Prompt to share my internet connection through my WiFi adapter and it's good so far! The only issue I face however is that I ...
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How do I find out which program and process ID accesses a given IP address in Windows?
Is it possible to catch, which program is accessing a specific IP address?
I found my computer is flooding and wish to check addresses one by one.
May be it is possible to set up some audit for ...
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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 ...
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* * * in traceroute
If I traceroute to my server via a bunch of different methods, the external ip seems to not work. However the server is online and accessible by this ip.
Localhost:
michaelxu@michaelxu-server:~$ ...
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Is 225.225.225.128 a valid subnet mask?
I have been told that we have two devices on a network:
10.40.225.142 and 10.40.225.144
These devices both have
Gateway 10.40.225.129
Subnet mask 225.225.225.128 (note 225 is Not a typo)
These ...
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Accessing a website via the webservers public IP from a PC within the same LAN
If two machines reside on the same LAN (a PC and a Webserver) why is it necessary to enable ‘NAT loopback’ on the router in order for the PC to access the website hosted on the webserver using the ...
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TCP/UDP ports that cannot be bound (permission error), but don't show up in netstat
When attempting to listen on certain TCP or UDP ports, I get weird error messages regarding permissions (or generic messages, depending on the program used to bind).
The message in German is "Der ...
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Transatlantic ping faster than sending a pixel to the screen?
John Carmack tweeted,
I can send an IP packet to Europe faster than I can send a pixel to the screen. How f’d up is that?
And if this weren’t John Carmack, I’d file it under “the interwebs being ...
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How can I own an IP address?
How can I own an IP address like I do with domains?
I have done some research and it seems that you can't buy a single IP, but rather you have to purchase a range of IP addresses.
Update : Important ...
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Is it possible for many domain names to share one IP address?
Is it possible for many domain names to share one IP address? For example, www.xjtl.com, www.fmie.com, sdmfl.com, etc.
Hundreds of domain names share just one IP – when you do a DNS query for each of ...
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Windows command to display all IP addresses
I know there is a single line of a command and its arguments that can help display all computer IP addresses (those that are being used) on a LAN, and my computer is also a client, as one of those ...
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Find an unknown static IP + subnet mask of device?
I have a device set with a static IP and subnet mask. I do not know the IP or subnet mask. How can I find the devices IP and subnet mask?
It is a piece of hardware, not a PC. It will not take an IP ...
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Why does the registered domain name “localtest.me” resolve to 127.0.0.1?
I was reading an article about Server-Side Request Forgery. In that article the attacker found that 127.0.0.1 was open to the internet. The victim then blocked 127.0.0.1, but because many other IPs ...
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What does /16,/24 mean with regards to ip addresses?
I am trying to understand how network topologies work in large scale networks such as college campuses.
I often see the phrases /16,/24 with regards to ip addresses.
I would like to know what /16 ...
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Wrong IP address from DHCP client on Ubuntu 18.04
I'm experiencing a weird issue where my Ubuntu 18.04 (server) box gets issued a wrong IP address during boot from the DHCP server. Running dhclient after boot on the interface results in the right IP ...
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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,...
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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 ...
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Why can't IP addresses start with 0 or 255?
It was specified somewhere (presumably in an RFC) that Class A addresses range from 1-126 in the first octet, and that class E addresses range from 240-254, but that leaves out two potential networks ...
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How can I copy a print file to a networked printer?
I have an Epson TM-T88V network printer. I can print to it using the printer driver. But I need to copy a "print file" to the printer using the command line, and this causes problems.
I ...
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How can I map a domain name to an IP address and port?
I want to give a domain name to the IP address and port for an application in Windows 7. For example, test.com should map to 127.0.0.1:59873.
Is there anyway that we can do it by using a web server ...
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What is the "Alternate Configuration" tab in TCP/IP settings
As I know there is two choice for configuring a computer IP address in the network. Assigning a Static IP or obtaining a dynamic IP from a DHCP server.
But what is the Alternate Configuration in ...
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How to get LAN ip to a variable in a Windows batch file
I'm streaming audio from my Windows 7 laptop to a sound card attached to a router. I have a little batch script to start streaming.
REM Kill any instances of vlc
taskkill /im vlc.exe
"c:\Program ...
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Is it possible that a lower level network can provide IP addresses for the higher level network? And how to prevent that?
Sorry for my obscure title, I don't have much knowledge about networking. So today I got a really strange problem with my network, it's like this:
My network:
From Internet → my Wi-Fi router → "black ...
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can't access website by ip but I can access by fully qualified domain
So it seems I can't browse a website by IP, but I can browse using it's hostname.
C:\Users\c>nslookup www.example.com
Non-authoritative answer:
Name: cx-cdn-bre.gss.consultix.net
Addresses: 62....
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What information can my ISP see from my router?
I installed a new router today and saw my IP address change because the new router has a different MAC address and I am just curious on what information my ISP can see from my network.
I know they ...
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Using Remote Desktop to connect to different computers behind same IP
I'm trying to connect my computer from home to two computers in my office. The office has a router and I already forward the port for computer A. I can successfully connect to my computer A at my home ...
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IP-to-IP Redirect
How can i redirect an IP to another IP, cause currently i have a program connecting to old IP address, sadly its hardcoded into it and its impossible to change it without violating its EULA, i want to ...
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how can i forward requests to my own IP address to a local IP address in my network (possibly using named)?
My setup
I have a linux server running in my basement. I currently have my router looking to that server for DNS lookup, so I can use named to spoof a bunch of domain names to point to my local ...
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How can I list all IPs in the connected network, through Terminal preferably?
Using Ubuntu 10.10 command line, how can I list all IPs connected to my home network?
Ideally, it needs to be a CLI command as I will be running it from C++.
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Why can't I email myself at: [email protected]?
I opened cmd and typed ping gmail.com. It shows me:
C:\Windows\system32>ping gmail.com
Pinging gmail.com [74.125.235.55] with 32 bytes of data:
Reply from 74.125.235.55: bytes=32 time=6ms TTL=56
...
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Why do we need subnet mask?
Since a IPv4 address already gives the information of the network and and host, why do we still need a subnet mask?
The 1st Octet already specify the network class (1-127: A, 128-191: B, 192-223: C ...
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How does bridged networking work in Virtualbox?
How does bridged networking work?
I have looked through the VirtualBox manuals but nothing extremely technical came up (It was just a generic gloss over of the topic).
How does it assign a ...
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How do IP answer packets reach their destination inside of a private LAN? [duplicate]
This is a little theory question that has been confusing me for a pretty long time.
Basically, if we are inside of a private LAN, and we want incoming packets to reach, for example, an HTTP server ...
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Why can a network address not be a valid host address?
So... I have studied for CCNA and such and been working with IP networking at the least the past 8 years or so. I have always seen and been told that the network address for a subnet is not a valid ...
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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 ...
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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 ...
