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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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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4answers
40 views

How can I check what is my ip on any particular endpoint?

I know I can do curl curlmyip.com or something like that, but that just shows me the ip curlmyip.com is seeing. Is there any tool I can use that tells me what's my ip on the endpoint for any TCP ...
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1answer
26 views

What does it mean if a public IP address looks like a private IP address?

For example, I go to http://whatismyipaddress.com/ and it tells me that my IP address is 192.X.Y.Z. What does this mean? Isn't that a private IP address? How can I find my real public IP address? ...
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0answers
16 views

How does a network request know where to go? [duplicate]

When a web request is made from a computer, after it has been translated to an IP address by the DNS, how does it actually know where to go? For example, if I make a request to a site being hosted in ...
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0answers
12 views

Streaming same video on four different ports with same IP

I want to stream a video on four different ports on a same interface and also needs to receive in the same way. I think receiving is OK as i can have socket but how to stream the video in that way in ...
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1answer
35 views

IPv4 interface number

I came across a question in Self Test Software for MS Exam 70-642 Which command adds route to destination server, with IP address 10.51.0.0 and subnet mask of 255.255.0.0. Next hop should be ...
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1answer
39 views

Actual Public IP different from Public IP shown on ip lookup

When I test my connection on services such as whatsmyip.com, I get 112.134.xx.xx as my public address. When I check the ADSL connection status on my router, it shows a totally different IP address ...
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7answers
21k views

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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2answers
53 views

Why does nslookup for espn.com give an IP that goes to go.com?

If I do an nslookup on espn.com, an IP is returned 199.181.132.250. When I put this value in the browser I get go.com. If I had add a 'Host header to the request, I still end up on go.com. What am I ...
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1answer
8 views

Overlapping address error in Packet Tracer-Possible subnet error

I am working on my hands on final exam for Networking Fundamentals. I have accomplished everything except for putting the 4 devices on two separate subnets. These are my subnet calculations: Given ...
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1answer
3k views

Remotely viewing IP camera on Belkin N450 DB router

I need to setup a wireless IP camera (Trendnet TV-IP501W) on my network so that it is remotely visible from anywhere. Right now I successfully connected it to my home network but nothing else. My ...
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0answers
23 views

Get e-mail sender IP address [on hold]

Usually, the source code of an email contains multiple IP addresses. I wonder if any of them is the IP address from the e-mail sender or if we can only have access to the server IP that sent the email ...
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1answer
37 views

Does this mean the DoD is listening to my D-Link Router?

I've only recently been monitoring my router activity and this Incoming listing from a DoD IP address is almost always present. It looks as if they are using the IGMP Protocol to sniff at my domain, ...
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1answer
39 views

CentOS 7 can't ping from server

I'm having a Strange issue with CentOS 7. I have my server setup with 2 NICs a private network and a public network. I'm able to ping the server on both the private and public IP. But I cannot ping ...
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2answers
1k views

Public IP shows strange characters and Facebook registers logged-in session to Mount Laurel, NJ

I'm encountering some IP strangeness today and hoping to find an explanation. In short, I'm based in Seattle, WA with my ISP being Comcast. While browsing Facebook's account settings, I noticed that ...
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2answers
496 views

Linux packet forwarding performance

I’m experiencing performance issues with Linux packet forwarding. I use an old laptop as a router, with iptables to handle masquerading and ipv4 forwarding turned on. Intranet network is connected ...
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1answer
14 views

Propagating visitor IP through nginx

I have a node.js site fronted by nginx. So that when request gets to the site the IP in the request is 127.0.0.1 Is there anyway to modify the request while it is under nginx control so that node.js ...
2
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2answers
35 views

Specific ip settings for different wifi access points

I have a situation where I want to connect a tablet to two different networks, not simultaneously but switching from one to the other (and at different locations). The tablet is running on Windows ...
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2answers
579 views

Unidentified network on windows 8 pc when hard wired to Airport extreme

I have a weird problem which not been able to resolve as of yet. Okay so let me explain, I have recently had fibre optic installed, and I decided to use a new Airport Extreme (instead of the router ...
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1answer
36 views

Find IP with Batch

I need to use a command of some sort to find the external ip of the user of my batch file. I have tried many methods but I need the batch file to recognise the ip as a variable of some sort so it can ...
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0answers
14 views

Netgear WNCE4004 Wifi Adapter Connection Trouble - Static IP Issue?

Here's my situation: I'm in the military and live in an accommodation block where internet is provided by an unprotected wifi network (I'll call this 'service wifi'). To get internet access, I login ...
34
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7answers
19k views

Do two computers connected on the same Wi-Fi have the same IP address?

Do two computers connected on the same Wi-Fi have the same IP address (for example, my dad's computer and my computer, at home)? If so, how does the outside world distinguishes one computer with the ...
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6answers
5k views

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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0answers
15 views

Is blocking / allowing by IP using .htaccess (or equivalent) enough to secure a resource on a web server?

Currently in the process of setting up a web infrastructure to host my web application where security is the most important factor and I need to be able to allow only specific IP addresses to a ...
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1answer
5k views

Can't access my IP camera over the internet

I have an EasyN F3 (F3-M166) IP camera. It works fine on local IP address, but I can't access it over internet. This is what I have done step by step: I configured the local IP (camera_ip) and port ...
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1answer
27 views

Router handles wrong IP address

For a couple of days, my router (ZyXEL ZyWALL USG 20W) handles wrong IP addresses to several LAN devices. Where all my devices formerly got addresses in 192.168.1.*, they now get 192.168.2.* upon ...
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2answers
43 views

What IP address is DNS service returning?

Supposing I have a server on a network that has a private IP address, and somewhere on a another network is a client that has the same private IP address. It is possible beaucase they are on different ...
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2answers
39 views

Why are IP addresses tied to a specific network but Ethernet addresses are not? [closed]

While IP addresses are tied to a specific network, Ethernet addresses are not. Why is this?
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12answers
32k views

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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2answers
34 views

What happens to a network packet originating from my IP as it travels through the Intenet?

I saw a video on YouTube that explains how the Internet works and it says my packets have an IP address and another IP address is wrapped around the packet at each junction of the internet. So my ...
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0answers
39 views

Add second static IP under Ubuntu 14.04 Trusty

I am trying to add a second static IP-Adress to my Ubuntu 14.04 server installation. But so far I haven't had any luck with that. My first attempt was to add a virtual eth0 device to ...
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0answers
15 views

Creating a Global FTP access with Local ADSL IP [duplicate]

i'm a windows 7 user. i want to create a ftp for people out of network downloading my 30gig of data. I'm wondering if there is a way i can create my own ftp with global access. i have a local ftp ...
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4answers
4k views

Services that just return your public IP as text [closed]

I'm writing a script that does dynamic DNS updates for me, but my server is behind a router, and so I need to use a web service to determine my public IP. So far I've found this one which returns ...
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1answer
2k views

How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

This "router" is not a typical situation. I'm using my phone as a hotspot and can only configure a select number of DHCP options. I can manage the limit on how many devices/clients can use my phone ...
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2answers
23 views

IP Route Add Issue

I'm trying to set up IE browsing with fixed routes in the route table. Before adding the static route, I can browse http://www.whatsmyip.org/ with internet explorer After I add a fixed route e.g. ...
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3answers
42 views

Pinging random public ip gives no results [closed]

I try to ping some random IPs, But most of them fail. I got a dynamic public IP by using Huawei mobile modem. But Whenever I try to ping other public ip I am not getting any result.. I can able to ...
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0answers
47 views

Extend existing IPv4 network by embedded System with its own network (different subnet)

I'm developing an "embedded device" using a self-made RTOS that should be connected to arbitrary customer IPv4 networks. Let's call this embedded device "master". Additionally to the NIC connected to ...
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2answers
128 views

Getting ip adress away from network

I use my old Iphone for remote controlling when i'm away from home. The problem is my service provider gives me dynamic ip adresses, so somethimes it changes itself. How can i know my home's actual ip ...
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1answer
28 views

Subnetting an already subnetted address further

I'm a little lost with a question given by my instructor in class and just wanted some clarification on my work. The question is - Given: IP Address: 133.64.128.0 /24 Want: 37 networks ...
4
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2answers
179 views

Windows IP address cached even after cable unplugged?

I have a PC which connects to a network by both wired cable and wireless. Of course, it has 2 IP Addresses : 192.168.5.111 and 192.168.5.112. (Subnet mask 255.255.255.0) As usual, the PC picks the ...
0
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1answer
18 views

How to securely get dynamic IP address of home network

I am running a raspberry pi and some services on my home network. My ISP provides a dynamic IP address as a public IP to me. I have port mapping and all set up so that if I get my public IP address ...
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votes
2answers
30 views

How to get server IP from given url [duplicate]

Can anyone tell me how to get the IP of a server, for example: https://capi-eval.signnow.com/api/document/ I need it for curl call, which might be slow because of dns. I can't get ip with ping ...
0
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0answers
24 views

How to get my router to forward IP address to web app?

My web server is behind a Microtik router v6.1. My web app is only able to see the router's IP when referencing "REMOTE_ADDR" or "HTTP_X_FORWARDED_FOR" (asp.net app). How do I enable "IP forwarding" ...
0
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4answers
94 views

Is a switch just a simple router?

A switch connects computers together. As an example we set up a switch to create a network. When computer A wants to speak to another computer B, it sends the packet to the switch (it has the ...
0
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2answers
25 views

access over different IP network over the same cable

I have two machines: A and B A and B are in the same Ethernet network divided only be a switch but they have different IP network. A is on 10.0.0.1/16 and B is on 172.17.1.1/24. I have access to A ...
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1answer
92 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
22 views

Acessing samba shares on different internal network with different IP range

As you can probably see from my topography, my Raspberry Pi is directly connected to the ISP modem/router with an IP of 192.168.1.2, whereas my PC is one network underneath with an IP of 10.0.0.4. ...
4
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3answers
3k views

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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3answers
4k views

How to Find User Name and IP address of users Logged on a Remote System

How can I find user name(of the local machine) of the last logged on user on a remote system. Is there any command or script we can use? I am able to capture IP address of the local machine of the ...
0
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2answers
39 views

Link Domain to home server

I've bought a domain (for i.e. www.mydomain.co.uk) and I've a home web server with nginx and PHP5. I want link the domain with my static home IP. What should I do? What I did: I tried to put in name ...