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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Quick way to calculate subnet IP and broadcast IP

I'm having trouble findind a quick/effective method to determine valid IP range based on given router IP and netmask I know how to calculate the subnet IP and the broadcast IP by converting all the ...
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2answers
42 views

Why does a router need to know the modem's static IP address?

Background: I just ordered a static IP address from my ISP. I now have to configure my router to use the static IP, but I'm not sure why. Why does the router need to know the public IP address if it ...
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24 views

I can enter my website using internal/public IP, but can't enter using my domain name

Couple days ago I bought another PC just for server purpose. I have already installed Ubuntu 14.04 LTS, LAMP, Mail Server SSH Server (or Service?), also PHPMyAdmin, Webmin and TeamSpeak 3 server. ...
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17 views

How to add two IP addresses to an interface through batch file

I have assigned a IP address to my LAN interface through I tried this netsh int ip set address "LAN" static 192.168.0.99 255.255.255.0 192.168.0.1 now I want to add 192.168.4.20 with gateway ...
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31 views

How can I tell if my ip address is static or not (Mac OS X)?

Well everything is in the title really... :-) I want to exclude my IP from my GA account but there is no point in doing that unless what I get from http://whatismyipaddress.com/ for example, is a ...
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1answer
12 views

Adding virtual interfaces (not VLAN) in linux

for some software testing, I need 12 different IP addresses to contact, each one with a unique MAC address. I just set up an Arch Linux VM but I can't figure out, how to configure virtual network ...
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1answer
40 views

Wifi, VPN and IP addresses

I am connecting to a set of VPN servers using wifi on my Macbook Air. I am trying to understand the triangle of relationships between the wifi connection (provided by my ISP), the connections to the ...
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5 views

in Private Network System Can be Traced

in a Private Netowrk (in Company) if somebody using public DNS IP and Accesssing some Sites which are blocked, That System which he/she is using that can be traced? if that can be traced. how?
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19 views

How to add 2 ip addresses to a LAN interface using batch file

How can I add 2 ip addresses to a single interface using CMD. So, I can run it as a batch file.
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1answer
23 views

Batch file for configuring the ip address and removing it

My pc has a network configuration IP- 192.168.0.99 192.168.4.20 Mask- 255.255.255.0 255.255.255.0 Gateway- 192.168.0.1 192.168.4.1 I am connecting to the internet through the ...
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28 views

Strange IP settings issue

Friend of mine is having a puzzling issue I've not come across before. Windows Vista box, logs into an SBS2003 domain controller @ 192.168.1.50. The first time the issue popped up (about two months ...
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33 views

IPv4 and IPv6 from different browsers on same computer

On my laptop, in Chrome, when I Google "What is my IP?", I get an IPv6 returned as my public IP address. On the same laptop, in Firefox, I Google the same thing, and get an IPv4 returned as my public ...
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17 views

How i can make my home router accept connections with my public IP while i am home

Is there any way to connect to a service on my home network with my public IP while i am connected to this LAN? To be more specific... Now I am using my phone to connect remotely (VNC) to my desktop ...
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1answer
26 views

What does it mean to “put in the IP address of the machine”? [closed]

Does the image below mean that I need to use my actual IP address (for example, what I see on http://ipchicken.com/) or is it something else? http://prntscr.com/4wlo6s
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1answer
41 views

How to Assign Public IP to a device plugged into the LAN port of a Wifi Router

I have these two public IPs from my ISP. As an example, let's say the two IPs are: XXX.XXX.XXX.180 and XXX.XXX.XXX.181. They are on the same range and right next to each other When I access the GUI ...
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11 views

Interpreting Traceroute Output for Potential Routing Loop

Is the following hypothetical traceroute output an indication of a routing loop or could it be due to something else? 1. 172.1.1.1 172.1.1.2 2. 172.1.1.2 172.1.1.1
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28 views

Batch check if IP is within specific range

I'm trying to make a batch script to get local IP-address of active NIC (could be wireless or local). To get IP adress I have used following line: FOR /F "delims=[] tokens=2" %%a in ('ping -4 ...
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34 views

DNS issue between Subnets

I have the following NET Configuration: ROUTER: IP #1: 192.168.17.1 IP #2: 192.168.8.10 PDC-DNS-DHCP Server: OS: WS2008R2 IP: 192.168.17.2 NAME: M2SCDC01P Domain Name: test.local ...
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1answer
36 views

IPv6 Web Site, But Fails IPv6 Readiness Tests

This is driving me bonkers. I have a Windows Server 2012 R2 machine running IIS 8.5. IPv6 is working fine on this machine. All the IPv6 test sites I browse indicate this machine is indeed running ...
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1answer
42 views

How do I create subnets given these constraints?

I am trying to tackle the following subnetting problem: Prepare subnetting for an organization that requires 2000 hosts to be placed on the network. The maximum number of hosts on a subnetwork is 300. ...
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2answers
36 views

How can I get a list of IP addresses that connected to an Apache server? [closed]

I'm trying to get a list of IP addresses that have connected to the Apache server in the past week for port 80, port 22 (the port FTP uses?), and whatever the port ssh/ putty uses. What is the command ...
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1answer
15 views

Which criteria is used by the linux kernel to pick udp source ports?

They are all of course greater than 1024, but can we narrow this range a bit more? Via wireshark the lowest I've seen is 30XXX. Does the kernel specify it's criteria somewhere?
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9 views

Create Proxy Server using command line utility

Currently I am using Hola (https://hola.org/) an extension to Google Chrome. It works like charm and I can access any site and it mimics that it is from some other Country, just hiding my real Ip ...
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2answers
51 views

Is there a chance that my real IP can be traced if I surf through a VPN?

Is there a chance that my real IP can be traced if I surf through a VPN? Which IP is registered to any particular website I visit? What if I disconnect the VPN after browsing, can my real IP be ...
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1answer
20 views

How to access ADSL modem web-interface thru router?

I have 3 devices in my network: D-Link router (fixed IP 192.168.0.1, DHCP enabled) ADSL modem (fixed IP 192.168.0.2, DHCP disabled; bridging mode, PPPoE) PC (dynamic IP) If I connect the modem to ...
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3answers
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Is there a downside to configuring a modem to use a dynamic IP when it has a static IP from the ISP?

I'm looking at the setup of a modem and noticed that it's been setup to take a dynamic IP, but actually it has a static IP. Is there any downside to doing this or a reason to change it? The internet ...
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2answers
91 views

record the websites/remote servers visited from my computer

Issue Summary and Description I would like to record all outgoing requests from my computer (in this case a mac) to any websites or remote servers. I mainly program magento applications and with ...
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13 views

Point ip to domain name over wifi/hotspot

Is there any way to point a domain on another IP address over my wifi network or hotspot that i create on my laptop. To get closer: I want domain www.google.com to be pointed to IP ie. 192.168.1.15 ...
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1answer
22 views

How to calculate subnet of your interface based on the destination IP and subnet?

I am new to networking and linux so I am not able to fix this problem. I have a power controller connected to my linux PC (eth0) through a switch with the default static IP of 192.168.1.100 and subnet ...
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14 views

Do I need more than one IP address to use Virtualmin on a clean dedicated server?

I just set up Virtualmin on a new dedicated server with nothing else installed, clean. The install seemed to go smoothly. I checked it said it was not ready to use Virtualmin so I rebooted and now it ...
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1answer
28 views

How Does a Router Map Inbound Traffic to LAN Nodes? [duplicate]

Imagine a home network of several computers connected via router to an ISP. Computer A wants to request a webpage from a remote website, 10.234.12.8. The address is not in its ARP cache, so it ...
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2answers
41 views

Find new ips on network

The solution I want to solve is to discover newly connected ip (and preferably mac and vendor) on the local network. So far I've tried arp-scan and nmap. I like arp-scan mainly because it's fast ...
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1answer
15 views

Get search results using IP

What I want to do is give a search engine my IP and ask it to return all the searches I've ever made with my IP. From what I understand, search engines store all data of its users. Is this possible? ...
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0answers
22 views

vsftpd returns wrong pasv_address

I use vsftpd on my CentOS6.4 home server. Recently I noticed that I can connect to the ftp but LIST command fails because vsftpd is returning wrong IP address when entering passive mode. I figured ...
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1answer
28 views

No IP adress in virtualbox, Ubuntu and metasploitable vm

I am trying to set up a lab environment with virtual box - Ubuntu, Metasploitable2 and Kali. When I run ifconfig in Ubuntu, I get the following output: eth0 Link encap:Ethernet ...
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1answer
37 views

aws ec2 private public ip issue

I have an EC2 machine with various programs running communicating via a number of TCP ports. Post AWS reboot, everything was working fine. Everything was working fine this morning, but now, I am ...
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2answers
102 views

Is there any software that can reliably change my IP address without having to unplug router?

Alright, so, there is a certain website that keeps… I'm not sure exactly what the right term is… attacking, hacking, my computer, I guess? With a DNS spoofing or DNS cache poisoning attack, and ...
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2answers
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multiple ip with different gateways for my Eth port at laptop

I want to use three different ip on my laptop with different gateways. i have tried the following steps. Added ip in advance setting with different gateway. but at a time only one ip is working. i ...
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2answers
54 views

Detect pre configured router IP address

I received a pre-configured router (Juniper SRX240) for local intranet. The router is configured with static IP and DHCP is not enabled. The problem is that I don't have a clue what is the IP address ...
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1answer
24 views

Network bridge loses its IP configuration

After certain uptime of my computer, network bridge adapter (includes WLAN and virtual machine) in my Windows 8 computer suddenly deconfigures from 192.168.1.9 (address made static at router's DHCP ...
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1answer
54 views

Why are there so many formats for local IP address? [duplicate]

If I enter the following command in CMD prompt... netstat -ano I get a list of active connections as expected. What confuses me is that there are many different formats for my "Local Address"... ...
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1answer
36 views

How to load a website from a certain ip?

I'm on a DNS (that I can't change) that propagates websites slowly (like days before Google's dns) so when I purchase a domain and point it to my web server and load it in my browser, it goes to a ...
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0answers
13 views

Change DNS to dynamic but NOT if IP is static?

I know I can use the netsh command to change DNS settings from static to dhcp, but does anyone know a way to tell it to do nothing if a static IP address exists?? Example 1) PC1 has a dynamic IP ...
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1answer
35 views

When I access Wikipedia from its IP address, this happens (“not configured on this server”)

First, I checked Wikipedia's IP address using the ping command... Then I tried to access their website using the IP address directly... Why do I not get to the main Wikipedia page? I thought that ...
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91 views

Can't ping IP in LAN

I'm using wifi router and I am not able to ping one laptop (A) from other laptop's in the same network. So basically I can ping from from A to B but not from B to A. A is using Windows and has Ubuntu ...
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29 views

VMware Ubuntu Internal IP Address

I have ubuntu 12.04.5 LTS installed on a VMware workstation. I want to run a game server on it so therefore i need to portforward that workstation. To portforward that workstation i need its internal ...
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1answer
36 views

Giving MAC address to the IT dept

If I want to use Public wireless at work place with my iPhone, I must give the phones MAC address to the IT department. Is it recommended to do so? What can they access with the MAC address? All my ...
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1answer
50 views

Unable to access shared folder in Win 7 homegroup via IP address

I have 3 Win-7 64 bit machines in a homegroup. MAC addressing enabled on the router. Machine A, B and C. All are in a homegroup. I want to share a folder on machine B to the rest of the group so I ...
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57 views

IP addresses from around the globe show up in my Router logs

I was checking my Wifi Router logs, and i spotted a lot of the following - Unrecognized attempt blocked from 198.204.230.34:5109 to xxx.xxx.xxx.xxx UDP:5060 Unrecognized attempt blocked from ...
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2answers
42 views

Access point IP range [on hold]

I have 2 routers set up as access points on my network, with static addresses outside the range of the main router. Should I configure the IP range of the access points to be OUTSIDE the range of the ...