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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Ubuntu Network configuration setting and Windows

Suppose I have connected to a Network having Static IP after that connected to a Network having DHCP, When I go back to previos network having static one I find lost my setting (IPV4). Probably ...
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DNS zone files with more than one name pointing to the same IP

I have set up a local DNS and the forward zone file looks like this: $TTL 86400 @ IN SOA ns0.mylocal.loc. root.mylocal.loc. ( 2011071001 ;Serial 3600 ;Refresh 1800 ...
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34 views

Assigned static ip address doesn't retain

I changed my computer's dynamic ip address to static, but after reboot when I opened local area connection properties, then I saw IP address and subnet mask values have become empty. Then just to ...
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4answers
87 views

Subnetting, Switches, and Routers

I am new at this and want to figure out why my configurations are not working. I have two subnets each connected by a level 2 switch. I have changed my subnets to the following: Subnet 1 has 62 hosts ...
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2answers
233 views

How to find subnet mask only knowing the usable address

I'm studying for certification and during a simulation I stumbled in question that made me realize I wasn't so sure about calculating IPs and masks stuff. There it is: A company has a forest with 4 ...
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2answers
58 views

IPv4 changes by itself

My IPv4 address randomly changes by itself but I can't figure out why ? It changes from 192.168.0.10 to 192.168.0.13 and vice versa. That happens doesn't happen often but very randomly... Does ...
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60 views

connect to two networks simultaneously via single ethernet port?

Is it possible to create multiple connections with same port? Is it possible to connect through them simultaneously/combine them? P.S: I am on windows 10
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1answer
299 views

Linux netstat shows ipv4 mapped ipv6 address

Even after disabling ipv6 on my linux machine and restarting network services, and not having an ipv6 address assigned to an interface, one of my daemon (cassandra to be specific)is using an ipv4 ...
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43 views

How can I process traffic between 2 instances of NetCat?

I have an utility that make some data transformation between stdin and stdout in both directions (encode / decode), and I want to make a some kind of bi-directional proxy using two nc instances and ...
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1k views

What happens when we change Subnet mask of Private IP address

first of all, I know that private IP ranges are 192.168.0.0 - 192.168.255.255 (65,536 IP addresses) 172.16.0.0 - 172.31.255.255 (1,048,576 IP addresses) 10.0.0.0 - 10.255.255.255 (16,777,216 IP ...
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18 views

How to link Ip addresses when only using two for DNS servers and then the other three for SSL?

I have five IP addresses for the short term. I was wondering what would be the best set up for NAT on these servers. I will have a total of seven servers at my house. The IP addresses need to be split ...
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4answers
306 views

Work Network Admin refuses to give me a 2nd IP address so I have to add extra router [closed]

At work I am given only a single IP address (198.168.10.106) to be used on a single computer on the network. Problem is that I want to use 2 computers at my office and share the only single given IP ...
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168 views

How does Starbucks wifi / etc “hijack” your internet connection?

I don't have a strong knowledge of DNS, but I do have a little bit, like I've done apropos dns and flicked through some of the mentioned man pages. When I sign onto what I'll call "corporate-free" ...
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2answers
133 views

How do computers on the internet locate each other using IP addresses?

Given an IP address, how do ISPs know how to find the node assigned that IP? Is there a central server, or several distributed servers, somewhere that hold information on all allocated IPs? After ...
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1answer
71 views

Difference between 127.0.0.1 and 0.0.0.0 in the context of the Firefox address bar

I need to configure a firefox extension to load a page that can never exist. It should be as fast as possible. The obvious choice is about:blank, but the catch is that the API used by the extension ...
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1answer
47 views

Understanding Ports

Total laymen trying to get a grasp on my home network. I have noticed that my sons laptop is consistently running with port 445 "SMB directly over IP" and was wondering if someone could tell me if ...
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121 views

IP address from LAN side of client router appears in NAT table of primary router

I’m seeing what appears to be strange activity on my Primary router (the only router connected to the ISP modem) from one Android device. It could be that I’ve never seen it before as the day is ...
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1answer
39 views

Change name and address of Local IP address

I'm now starting to build a simple webserver in Python and I'm wondering how the IP addresses work. On my computer I stated in my network center a specific static IP address and this address works ...
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37 views

Can't forward real static ip to virtual machine's local ip

I have installed Windows Server 2012 and IIS to virtual machine(NAT connection). I want to publish a web site with my static ip adress. I have a web site to publish and everything is working. My real ...
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1answer
40 views

Inter-network communications

I have an internet connection at my residence through my cable provider. Obviously it hooks into my cable modem which them hooks into my router where the signal is switched to the wireless access ...
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2answers
165 views

Gateway iP address after increasing network to /22

I am using /24 network now but i need to increase to /22 (255.255.252.0) in order to get more space for upcoming VOIP users and mobile users. But all of our servers are configured from 192.168.1.1 to ...
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33 views

ipconfig alternative on Embedded XP

Is there a way I can see what the IP address is of an embedded XP computer since "ipconfig" does not work? Thanks!
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1answer
87 views

Host website from webserver without changing public IP

Is there any way without a public IP I can make my web server feed outside requests and host my website over it? I don’t have a public IP address at all neither static nor dynamic. I am not sure about ...
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53 views

Linux unset my ip adress

It seems that my Ubuntu 14 keeps deleting the IP adress of my eth0. Has anyone else seen this happen before? Where should I begin checking? I have no log to show : after setting the address with ...
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1answer
82 views

Two IP addresses, different network ID = different networks?

Part of my coursework involves tracerouting a number of UK academic websites. When tracing oxford.ac.uk, before reaching the end (129.67.242.154), it goes through a few 192.76.xx.xx routers which (...
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61 views

Recording video livestream using ffmpeg

I'm trying to record a livestream using the app IP Webcam and also the FFMPEG software. I'm using the following code: ffmpeg -re -i http://172.16.14.118:8080/video test.ts The problem is that the ...
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28 views

Connecting to a node server on mac from a local network

I want to test my app from an iphone locally, so I tried to access the ip of the mac it is running on (on the same network, and including the port: 192.168.1.101:3456) and it is not working. The ...
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1answer
105 views

“WiFi adapter doesn't have valid IP configuration” - Please, help! urgent

Although connected to the Wi-Fi, the access to the Internet is limited (none). I have tried everything people suggest on the forums. I'm on Windows 8 (Lenovo Yoga notebook) when typing ipconfig it ...
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5answers
215 views

How do you get your public IP address through the Windows command line?

Is it possible to get your public IP address through cmd without using sites such as http://whatismyipaddress.com/? I am behind a router. Please feel free to go as detailed as possible. I'm studying ...
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1answer
36 views

What does adding an IP to a URL do?

This is probably an easy question to answer, I just do not know how to search for it. My basic question is how is going to a url with specified URL different than going to direction to the url? IE ...
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1answer
152 views

Amazon EC2 public IP Address

How does amazon assign public IP address to its EC2 instance? As this IP address is public means I can use it from anywhere and it is reachable from the internet which means that it is unique ...
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1answer
35 views

Detect My Second Account [closed]

Let's say I was banned from a website, and I want to create a new account and use it without the 2 accounts being linked. Different Browser Is Used. IP is different. Java + Flash disabled. Different ...
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1answer
76 views

D-Link 150 Mbps N150 Wireless ADSL2+ Router wifi not working

I bought D-Link N150 Wireless ADSL2+ Router one year ago. I got a broadband connection from MTNL http://mtnldelhi.in/, and used wifi and ethernet connection. There was a guy from MTNL office, who did ...
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15 views

How to resolve flaky IP routes to an Amazon EC2 server?

My connections to various Amazon EC2 run websites seems to timeout every few minutes. Then it starts connecting again a minute or so later. I suspect this is due to a faulty route set along the way, ...
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1answer
39 views

How to force windows to use assigned static IP and not allow default IP to be used?

I recently changed my windows IP address to 172.16.115.X and the default gateway address is 172.16.112.1. So I got a warning that the gateway and my address are not in the same subnet, which is fine. ...
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7k views

“Local Area Connection” doesn't have a valid IP config

I’ve been trying to help my father regain his connection that abruptly ceased working. He runs his connection through an intermediary router that he uses as a switch; if that is important at all. we’...
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165 views

Connect two devices with the same static IP addresses to a network

I have a problem where I have two individuals of a device with a fixed IP address that I cannot change and I want to connect them both to my network. If I had only had 1 device, I could use port ...
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74 views

Wrong IP, DNS Error on Website

I am having some errors on my Domain I set up. So basically I have 2 Domain Names and then I have set a DNS name for both of them in the same IP, one worked the other didn't. When I did a ping in CMD, ...
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1answer
271 views

How to access a Hyper-V virtual machine remotely with Remote Desktop?

Right now I have a physical server with Windows Server 2012 in which I am running a windows 7 virtual machine with Hyper-V Manager. How can I access this specific virtual machine without going through ...
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3answers
439 views

Dividing a network into subnets

I'm finding it very hard to understand IP subnetting. The things I already know how to do: Given an IP-adres and a subnet mask, I'm able to find all ip adresses in the subnet. Given an ip adres like ...
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2answers
49 views

Asterisk and x100p - Error: wcfxo: Out of space to write register 05 with 0a

I am running a IP PBX system with trixbox, what i'm trying to do is connect PSTN lines with IAX2 using X100P analogue card. The problem is i cannot call any outgoing routes. (already tried ...
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1answer
104 views

How to change my IP address on every disconnect and reconnect?

I am currently running on windows 7. I have a postpaid internet connection. A few days ago the IP always changed on every disconnect and reconnect. But now this is not happening. The same IP is coming ...
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1answer
27 views

Calculate CIDR given an IP address

I've been reading up on CIDR A lot today, and am curious to know, if you have a given ip address i.e. 192.50.50.1, can you determine what it's CIDR would be?
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1answer
123 views

Blocking IP address ranges in a Windows 7 VM under Virtual Box

Using Windows 7 installed in a virtual machine built with Virtual Box 4.3, I have created two Inbound and Outbound firewall rules. I need to block two ranges of IP address in the VM. However, ...
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1answer
229 views

Scanning a network and SSH each IP until I get in through SSH

Normally, I would SSH into that machine using: ssh user1@123.45.67.8 That server in my network is forced to use DHCP in the subnet (134.96.90.0). And everytime it shuts down, I have to go find the ...
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1answer
46 views

Whitelisted IP has reset, how can I change it back?

I (used to) have an IP address that had been whitelisted to access a website via FTP. My IP has randomly been reset and I need to change it back so I can use FTP again. I have the whitelisted IP ...
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2answers
159 views

Point dynamic IP address to domain automatically

I want to move all my projects from Shared Hosting to a personal server, basically a server in my home using my 200Mb Fiber connection. The first problem I have is my dynamic IP address. It can ...
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1answer
95 views

odd way of rendering math formulas in wikipedia [closed]

I am encountering a strange problem that has stopped me for several hours. Wikipedia shows math formulas as LaTeX code but I don't have this problem in other sites like Math SE. The photo shows ...
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1answer
30 views

Same IP adresseses are working fine in my hostel. How is it possibe?

Me and my friend are using the same IP address however we are getting no error message of IP conflict. How is it working. We are receiving the data that we requested for and so how is this possible?
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177 views

How can my personal ISP connection return two public IP addresses?

I want to play a game (Wildstar) but each time I login, it gives me an “invalid login token” error. After looking into the issue, I found that it was caused by, according to Wildstar: WHAT DOES IT ...