IP address is a numerical label assigned to each device participating in a computer network that uses IP for communication.

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3
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3answers
278 views

What's the formal definition of the magic number of a network? [closed]

I know what the magic number of a network is. I know how to compute it - 2 ^ ((32 - n) % 8). I know what it's used for and how to use it. I don't how how to define it formally. In a recent interview ...
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2answers
369 views

What does IP Address quadrants reperesent? [closed]

If a IP address is 192.168.112.28 what does each quadrant represent in this IP address?
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1answer
178 views

How do i set public ip address for office? [closed]

My assignment has this thing. Im given with the public ip address of 203.220.72.0/24. This is public ip address for router.The office got 20 hots and I need to give public ip address to those hosts, ...
1
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1answer
366 views

CentOS network configuration doesn't work as expected

Maybe I'm doing a rookies mistake but I can't find out what I'm doing wrong. On a Centos Box, I want to put static ip on my server so edited /etc/sysconf/network-scripts/ifcfg-eth0 as follow: # Intel ...
0
votes
1answer
163 views

nslookup and host(linux) shows 2 ip's for some computers but not all

First off I will mention that I am a software engineer not an IT guy, so please bare with me. My company has an ftp server. Outside of our network, it works fine. Inside of our local network some ...
0
votes
1answer
356 views

Can a machine(physical or virtual) accept and process UDP packets with a different IP address coming from a known device?

Before everything, thanks for reading the next question. I have script,(ipUDPspoof.rb), which is a client/server script in Ruby (you choose the parameter 1 to be server and 0 to be client, at ...
0
votes
4answers
4k views

Postfix: Allow SMTP AUTH only from specified IP address ranges

can one implement an IP address based restriction for SMTP AUTH in Postfix? Scenario: I'm running a Postfix mail server that receives mails from all over the Internet. But the server doesn't only ...
0
votes
1answer
101 views

One-liner to retrieve external IP address [duplicate]

Possible Duplicate: Finding the Public IP address in a shell script For use in scripting, it would be handy to be able to do this: IP=`....something ....` echo ...$IP... >> ...
-1
votes
1answer
57 views

Specify what network connection to use based on IP being accessed [closed]

Basically, we have a number of machines with two network cards. One is wireless, one is not. The wireless is connected to the internet, while the other one is connected to a route and a bunch of ...
-2
votes
1answer
1k views

How does one set a dedicated IP address to a minecraft server on Windows Server 2008 R2? [closed]

So I bought a dedicated server from staminus.net just for running a Minecraft server. On Minecraft, the default port is 25565. I am wondering how one makes it so that there is no port on the IP ...
0
votes
1answer
271 views

Specifying a specific source address for an Apache forward proxy

The Apache 2.4 new features page says: "The source address used for proxy requests is now configurable." I can't find out how. The words "Source address" aren't mentioned on the 2.4 mod_proxy ...
-3
votes
1answer
906 views

Map ip address to localhost [closed]

I have a website running on my mac on mamp at localhost:8888. On another mac on my wifi I can view the website, using http://192.168.X.X:8888 (where X's are my computer's ip address). Except, I ...
-1
votes
1answer
138 views

need to figure out this subnet mask please is it correct? [duplicate]

Possible Duplicate: How does IPv4 Subnetting Work? The largest subnet has 300 hosts so I am trying to workout the number of host_id bits I require for the mask but I am confused as each ...
-2
votes
1answer
56 views

Windows Server 2003 not loading web pages by domain, but loads/pings by IP (Server not found) [closed]

It's really weird and randomly started happening.. Example: I open firefox or IE on the server and try to load "google.com". It doesn't load. Pinging it doesn't work either. However, if it use the ...
0
votes
0answers
79 views

Adding an IP range to SuSE 11

I'm looking to at a /22 to eth0 in addition to the address that is already bound to than interface. I'm familiar with using ifcfg-eth0-range0 in Redhat to accomplish something like this, but not how ...
-1
votes
1answer
73 views

Temporarily ban an ip address using .htaccess [closed]

Is there a way to temporarily ban (only for 5-10 minutes) a certain ip address using .htaccess.
21
votes
4answers
1k views

Customer site is out of IP addresses, they want to go from /24 to /12 netmask… Bad idea?

One of my client sites called to ask me to change the subnet masks of the Linux servers I manage there while they re-IP/change the netmask of their network based on a 10.0.0.x scheme. "Can you change ...
-5
votes
2answers
432 views

Why do we need logical addressing [duplicate]

Possible Duplicate: Why couldn’t MAC addresses be used instead of IPv4|6 for networking? If physical address or Mac address is unique why do we need logical addressing? This because ...
1
vote
2answers
125 views

Another Public Static IP Address?

We currently have two servers, one of which has a static IP address allowing remote access from outside. We now need the other server to be accessible from outside, I'm presuming we need to obtain ...
1
vote
0answers
606 views

SQL Reporting Services Report Manager cannot be accessed by IP on the local computer

I have set up SQL Express 2012 with Advanced Services on a test machine. The requirements are that ReportServer should run on a dedicated IP address and port. So I went to Reporting Services ...
0
votes
1answer
115 views

How do you initialize networking on a new Xen guest VM?

We have a Citrix XenServer setup, and while I personally lean more towards Dev than Ops, I've got an issue that's been bugging me. When you provision a new (Linux/Ubuntu) guest, how do you get it to ...
1
vote
2answers
1k views

Set Organizational Unit by IP Address in Active Directory

Our AD is a mess, and I've been trying to look for a way to automatically assign computers/workstations to an Organizational Unit based on their IP address. I've had no luck, though, in finding any ...
1
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3answers
1k views

nginx as proxy using a specific source ip

I'm using nginx to serve static file and proxy other requests to some Tomcat instance. The problem is that I don't know how to choose which IP address will nginx use to connect to Tomcat. Each Tomcat ...
0
votes
2answers
619 views

Binding MySQL to run from the public or private LAN IP address - which one is faster [duplicate]

Possible Duplicate: Binding MySQL to run from the public or private LAN IP address - which one is faster So we have 2 servers all running at the same web host. We have bind MySQL to listen ...
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votes
4answers
493 views

How do I say two IP address are in different network [closed]

This is very basic question but i really could not find how it will be.There are two network IP address are given 10.0.0.10/24, 30.0.0.10/24 .Would like to know are these two addresses in same network ...
0
votes
3answers
116 views

How do you get permanent IP for your DNS server?

We want to setup our own public DNS server and offer it to clients as a service. DNS server obviously needs to be setup on an IP address and this IP address setup on many of our clients ...
0
votes
1answer
874 views

Reach pc in the same network but a different subnet

PC 1 in subnet - 192.168.1.x PC 2 in subnet - 192.168.2.x Is it possible to access one pc from the other by its IP address without special router config? related: How to reach a device on a ...
0
votes
1answer
112 views

Blocking IP address with port forwarding

I have a website setup behind a router, so the router has the external facing address and it will forward requests to the webserver inside the network. If there are X number of invalid login attempts, ...
2
votes
2answers
3k views

How to access a site in IIS with no DNS mapping

In my IIS 7.5 hosted in a Windows Server 2008 R2 I have several websites with no DNS address assigned. Let's take for instance the site (as named in IIS) with site name mySite. I have for this site ...
1
vote
1answer
567 views

Plesk 10 Postfix with multiple IP adresses and SSL certificates [closed]

We are currently running a root server with Debian 6 and Plesk 10.4.4. We have some virtual hosts using one IP adress (shared) - e.g. example1.com - and another virtual host using a dedicated IP ...
1
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1answer
993 views

STUN-server using AWS

We are about to hire some consultants to help us set up an AWS-based server environment that will enable us to handle NAT Traversal for our P2P application. One important part of the NAT Traversal ...
0
votes
1answer
127 views

IIS SSL is taking all IPs although it is told not to

I have a testing system where IIS Express on Windows 7 SSL website has to live together with Cerberus FTP server SSL website (Cerberus FTP has a built-in web server for HTTP uploads). I have set up ...
1
vote
1answer
117 views

Windows Server 2008 - Setting Up DNS and Web Server (IIS) to host personal website?

Okay, I have a server, (Windows Server 2008 R2 to be more precise) and I have installed PHP, MySQL, phpMyAdmin, for web hosting purposes. I have set up a static ip address internally. I have ...
0
votes
1answer
138 views

Never changing public static ip address [closed]

I need a public IP Address that should never change. So far I found the following: Amazon EC2 Elastic IP Addresses Hetzner Failover-IPs can be reassigned to a different Hardware How sure can I be ...
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votes
3answers
131 views

What tools can I use to locate the IP of a machine on my network? [closed]

I am logged in to a remote Windows Server machine and am trying to attach it to a VPN for a LAN that I am also connected to locally from another Windows machine using Remotr Desktop. I can connect the ...
1
vote
2answers
3k views

Difference between accessing a website using Local host and IP address

I have developed an ASP.NET website and deployed into my IIS server. Now to see that my IIS is installed fine, I type local host in my address bar, and I get the welcome screen of IIS and its ...
1
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1answer
2k views

Is it possible to connect 2 networks with same IP range?

I have two networks with the same IP addresses in use and I need to connect them. I have a third network between the two to connect them but I need to know : - is it possible to communicate iof the ...
3
votes
1answer
176 views

Network Design and Implementation

I am currently designing the network in my office, which is relatively small now but it plans to grow very fast. The design is pretty much done, the problem is occurring during the implementation. So ...
-1
votes
3answers
699 views

Does SSL encrypt the IP [closed]

I am building a personal server. I want to be able to access this server from anywhere, and I don't want this server to get blocked. It is my understanding that HTTPS encrypts my traffic, but I also ...
2
votes
3answers
128 views

Executing a software on another network interface?

I have created 3 virtual interface on a Linux system, using different IP address. I have a software doing requests to a server but it use the default interface, eth0. Is it possible to execute a ...
0
votes
2answers
67 views

Issue testing website migration using IP address

I am in the process of migrating several websites to a new server. While the data transfer itself is going fine - I am running into issue testing the sites on the new hardware setup. Typically, this ...
0
votes
1answer
61 views

Cant access LocalHost from Browser

I hav installed apache2 & php 5.3x on centos 6.3 by using following commands: yum install httpd yum install php Now I'm trying to access php page from my local machine browser using following ...
1
vote
1answer
544 views

zeroconf (bonjour) assign ip adresses (.NET)

i am on windows and i want to write a tool in .NET that gives IP´s (with zeroconf) to embedded devices in a network. I am familiar with programming but new to zeroconf, networking. So i wondered, ...
0
votes
1answer
76 views

Static IP for calls from EC2 to external web service

My purpose is to do web service calls from Amazon EC2 instance to external provider. The web service provider only allows calls from predefined IP addresses due to security reasons. Is getting an ...
-1
votes
1answer
53 views

Can ISPs see which IP that has been assigned to a customer in each others network? [closed]

Is there some sort of shared knowledge between ISPs that make them able to see which customer an IP has been given to, no matter which ISP the IP belongs to? I.e. is someone that is an ISP able to see ...
3
votes
5answers
263 views

Trusting DHCP-assigned IP addresses only

I manage a reasonably small network (150 machines or so). We have a DHCP server set up with reservations for all of the machines on the network and an exclusion zone set up over the entire range so ...
0
votes
2answers
890 views

server host name and server ip address redirect (Debian, Apache)

I have the following folder structure on my Apache .../var/www/www.x.tt/htdocs .../var/www/www.y.tt/htdocs I have defined a virtual host for each. So if I type in www.x.tt in my browser I ...
2
votes
3answers
539 views

Find ISP/IP address by geographic location?

I'm trying to find an ISP or IP address by geographic location, Is this possible?
-1
votes
1answer
139 views

Get/Assign IP addresses assigned by the DHCP sever with DLink switches in between

In our office the setup is like we have a UBUNTU server with DHCP Server connected to all the PCS via 24 port and 8 port DLink switches. How can I find all the PCS(with client name, ip and mac ...
4
votes
4answers
1k views

Get the interface and ip address used to connect to a specific host (ip)

I'm sure this has been asked and answered before, but I wasn't able to find it, so hopefully this will at least link someone to the right place. I want to find out my local interface and ip address ...