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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IP Range Notation

I have the following IP ranges: 64.233.160.0 64.233.191.255 66.102.0.0 66.102.15.255 66.249.64.0 66.249.95.255 72.14.192.0 72.14.255.255 74.125.0.0 74.125.255.255 209.85.128.0 209.85.255.255 ...
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Linking 10.0.2.0/24 IPs with 192.168.1.0/24 IPs

The Problem I am currently messing about with some of the network tools in Linux, and I have found that if I perform an nmap scan using the 192.168.1.0/24 range, I get a bunch of lovely device names: ...
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4answers
3k views

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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0answers
69 views

Allow trusted IP and Block others in Windows Server 2008 R2

For protection of a Web Server, I need to allow some trusted IP and block others. The solution I have tried: Create 2 inbound rules : Allow some IP and RDP IP Block All this resulted on ...
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2answers
94 views

Why I can't redirect using `hosts` file in windows?

I want to go to www.Google.com when I enter 1.1.1.1 in my browser. So I think I must change hosts file under windows\system32\drivers\etc path in Windows to map this IP address to Google homepage. I ...
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1answer
272 views

Weird response when I ping x.x.x.255

This is my computer network configuration: C:\Users\user>ipconfig Windows IP Configuration Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Link-local IPv6 ...
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1answer
21 views

netstat with --inet option does not display listening tcp por

Can someone please explain why the output of the command are different? user@geeko:~> netstat -ln | grep 9876 tcp 0 0 127.0.0.1:9876 :::* LISTEN and ...
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1answer
27 views

Internet drops - two routers handing out IP addresses?

My apartment block of 14 apartments share one fiber-optic internect connection. However, I've been having trouble setting up my wifi. I have two routers. 1) A D-link. This works out of the box, but ...
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4answers
11k views

Possible to “ping” url:port? (OS X-GeekTool)

I'm trying to use GeekTool (Mac pref pane... basically just embeds output of a shell command/script on the desktop... ...
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14 views

Getting memory error while adding static route on mac

I am on mac with two interface Wifi LAN 144.33.22.22 I want that one ip go through to different interface I did this sudo route -n add -net 172.22.33.22 144.33.22.22 Then i get this error ...
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1answer
64 views

internal static IP address configuration from router

How do I reserve an IP address for tleilax and ensure that tleilax only gets that reserved address? The tleilax box uses DHCP. When I look at attached devices, I see: Attached Devices Wired ...
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32 views

Dynamic IP assignment in theory [duplicate]

If I turn my router off for 24 hours or more I am always assigned a new dynamic IP address once I turn it on again. Theoretical question for you guys; Does that mean I don't actually have an ...
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1answer
50 views

If router is off for a few days, do you have an ip address as far as ISP is concerned?

I have an ISP which assigns IP addresses dynamically. If I go out and turn my router off I am always assigned a new one once I turn it back on. Does that mean that... 1) my previous IP goes elsewhere ...
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1answer
22 views

Sharing IP block between two computers?

I'm not too knowledgeable in this matter so I wanted to double check here. Say I have a server hosted in a datacenter with a CIDR IP block 104.x.y.z/28, which makes a total of 13 usable IPs, not ...
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1answer
48 views

Can I allocate IPv6 addresses to directories of my web server?

I am running an apache server on a Debian machine and I have 1 IPv4 addresses and 20 IPv6 addresses. I want to run two websites of this server, can I allocate a directory an IPv6 address so that I can ...
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1answer
16 views

Not able to login to Tuleap after full installation due to TCP IP port configuration

Not able to login to Tuleap after full installation, as all the ports are in listen mode and 9091 port is not visible in ports.How to over come this and solve. With IP address we are getting tuleap ...
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1answer
26 views

Find all machines from a particular network that can connect to my server

A complete noob/novice here so you might have to be a bit patient so this might be a a very simple question We have a server in a specific network, say, 120.1.2.56 and only certain systems from a ...
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233 views

firewall detecting outgoing connections of weird hostnames

Recently, I am monitoring every outgoing connection with the help of my firewall. Sometimes when I want to connect to the Internet I receive alerts that some strange looking hostname is going to have ...
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2answers
244 views

What happens if 2 devices want the same static IP address?

I don't know much about IP addressing. In my mind, static IP addresses are something that a device requests, asking for a specific address. With that approach, what happens if 2 devices attempt to ...
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1answer
698 views

How do I set a static IP address for a particular MAC address on a Cisco DPC3825 router

How do I set a static IP address for this router: http://www.cisco.com/web/consumer/support/modem_DPC3825.html so that a specific MAC address always gets the same IP address.
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3answers
104 views

Does a computer connected with a 4G USB dongle have a unique public IP address?

I will need my computer to have a unique public IP address meaning an IP address that no other device is having. I will be using it to receive UDP packet from another device that is not on the same ...
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5answers
157 views

Can I collect wireless packets using Wireshark while being connected to the Internet via cable?

I am working on a PC which is connected to my router using a LAN cable, and the other computers in my house are connected to my router using WiFi. We are all connected to the same network, so I ...
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2answers
10k 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: http://i.imgur.com/U3dK2SQ.png So the router 2 is connected to the line. And I'm (my PC is) ...
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1answer
34 views

Updated DNS zone can't be seen from my local network

I have updated a domain name DNS zone on 123-reg.co.uk where I bought the domain name. I have only updated blog A record to different hosting(IP) On my PC home (windows) or another PC in the same ...
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53 views

convert Ethernet router into integration gateway

I need to integrate to an Ethernet proprietary network. It is IP based but doesn't implement TCP. I need a router which will poll devices on this network, and periodically post the data using ...
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Windows: Configure point-to-point-connection on one network card so it is completely independent from another network

I am developing for a Windows system which is supposed to have two network cards: 1) is to be used by a customer in arbitrary ways depending on his networking requirements 2) is used for a ...
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3answers
556 views

How do I find the static IP of a website?

Suppose the web site can be visited through a static IP. How can I find what it is?
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5answers
3k views

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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1answer
33 views

Dual ethernet interaction [closed]

I was looking at the overview for MSI's new X99A motherboard and noticed that it came with two ethernet ports. I've only ever used motherboards with a single ethernet adapter so I am wondering how the ...
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8answers
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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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1answer
31 views

I want to know how much user/ IP is online and which user is using high bandwidth on my network.? [closed]

I want to know how much User/IP are currently online or running and How much User/IP is offline/Shutdown. And which user is using high bandwidth (LAN/WAN) on my network... Please HELP ? I want a ...
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36 views

Debian 8: Server makes routers dhcp crash

I've got an old pc with debian 8 running as home server. A small problem is that whenever the server uses a lot of network traffic, let's say while downloading torrents, it seems to crash the dhcp of ...
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800 views

How to find the IP address of a router

I live in a dorm where many students have setup small wireless networks. There are two of this networks that are very close to my room as the signal is very strong. Our college uses DHCP to assign IP ...
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1answer
36 views

Is it possible to get ip address of a router thru mac id?

Is it possible to get ip address of a router thru its mac id (router) ? also I am connected in the same network (ISP)
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55 views

How to Identify Class A, B and C IP addresses that look similar?

The question I had come up on my CompTIA test was Which of the following is a private Class B IP address? The choices were A 10.0.15.1, B 172.16.0.1, C 172.16.1.1, D 192.168.1.1 We know that within ...
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4answers
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What is the diference between IP subnet mask 255.255.254 .0 … or 255.255.255.0? [closed]

What is the diference between IP subnet mask 255.255.254.0 and 255.255.255.0?
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0answers
32 views

Ubuntu server as DHCP server for dual stack

I currently have an Ubuntu server on VirtualBox set up to give hosts on my GNS3 topology IPv4 addresses, and it is working without issues. However, I would like to have that same DHCP server give out ...
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1answer
2k views

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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0answers
60 views

Router IP address

I have a wifi router which connects to the internet. The local IP of this router (router A) is 192.168.0.1 Few years ago, I had connected another router (Router B) to router A via an ethernet cable ...
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1answer
6k views

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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1answer
52 views

Connecting two home routers and change to IP addresses

Netgear Cable Modem Router Connected to Internet IP 192.168.0.1 DHCP is ON D-Link Router This is my wireless router IP 192.168.100.0 DHCO is OFF I want to use the D-Link router as my primary router ...
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3answers
14k views

Make my system to resolve a domain name locally

Is there a way to change our website address into a domain name. E.g - I am creating a intranet and just copying the server IP and port everywhere to open the web page. It looks odd to copy pasting ...
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2answers
52 views

Static IPs through router

Don't know of it's even possible, or if it's the right place but here it goes. Facts: I have a router (on lease, can get something else if need be), TL-WR740N. My ISP gives me 3 external/global IPs ...
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2answers
134 views

MediaWiki Availibility for Local and External

I'm currently hosting a MediaWiki site on my computer. I'm forwarding port 80 to my computer, and I'm able to access it from outside the network, as long as the $wgServer variable in ...
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3answers
70 views

Leading zeros in IPv4 address; is that a no-no by convention or standard?

I teach a class on a software product my company makes and I find that students frequently add leading zeros to a configuration page to have the software connect to our hardware. Leading zeros are ...
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51 views

Why did the designers of IP choose the IP Checksum? [closed]

Why did the designers of IP (and UDP and TCP) choose to use the IP checksum to detect errors rather than a more robust error detection code such as CRC-32? I previously thought the IP checksum was ...
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1answer
39 views

How to block all IP addresses in a range?

In nginx, I know that to block all IPs in the range 5.121.66.xxx, one can use this directive: deny 5.121.66.0/24; Now, I'd like to know how a range like 5.121.yyy.xxx (where yyy in 1-255) can be ...
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1answer
35 views

Does DNS lookup change depending on the part of the site being requested?

DNS requests to different subdomains can be different. For example, example.com and subdomain.example.com can return different IP addresses. Does this logic extend to the parts of the domain after ...
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1answer
51 views

Loading a website using IP

As per my understanding DNS is used for resolving domain names into IP addresses. I am using Ubuntu. I did following. nslookup facebook.com gave me the IP of the website. I blocked DNS using firewall. ...
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1answer
168 views

EC2 instance with two internal IPs - using ifconfig

I am trying to allocate another internal IP to an EC2 (classic - not VPC) instance with the following command. sudo ifconfig eth0:0 inet 10.80.7.40 netmask 255.255.255.0 Here, 10.80.7.40 is just a ...