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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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
21 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 ...
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2answers
69 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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1answer
48 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
50 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 ...
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1answer
28 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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2answers
41 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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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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92 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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2answers
49 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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1answer
36 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
59 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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2answers
142 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
21 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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1answer
39 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 ...
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0answers
51 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
33 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 ...
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2answers
207 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 ...
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0answers
29 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" ...
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4answers
108 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 ...
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2answers
27 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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2answers
28 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. ...
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1answer
164 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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3answers
145 views

Find a computer's hostname by IP address? ping/nbtstat/nslookup don't work

Note: Windows environment (servers & workstations): I'm having a small issue here at work where a server went down and the (not very smart) tech guys don't know which server was until we give them ...
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2answers
28 views

confused on my allotted static ip addresses and hope to get clarity

I was given this for my dedicated server: xxx.xxx.232.80/28 From what I gather, my ip range is xxx.xxx.232.80 - 95 (or 94?) I'm not sure since I really don't understand what a broadcast ip does for ...
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1answer
37 views

Different servers on the same port ipv4 / ipv6

Say I have two TCP servers A and B. A is an ipv4-only server listening on 127.0.0.1:10000. B is an ipv6-only server listening on ::1:10000. Can I start these on the same machine? That is, how are IP ...
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1answer
23 views

Custom entry in hosts file not directing to correct IP

I have an entry in my local hosts file pointing to: $my-server-ip development.$client-domain.com When I ping development.$client-domain.com, I get $server-ip, but when I visit it in a browser, I do ...
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2answers
60 views

Why do some domain names contain numbers and strange words?

Here are some examples which appear under the foreign address field when I run netstat (on Win7): lhr08s06-in-e11 edge-star-shw-12-erc3 Why don't these look like standard internet domain names (eg. ...
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3answers
40 views

Understanding IP addresses on Linux machines

When I read /etc/hosts on my Ubuntu machine, the first two lines are as follows: ipAddr1 localhost ipAddr2 nameOfMachine Are these IP addresses characteristic to my machine or are they related to ...
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1answer
570 views

What information can my ISP see from my router?

I installed a new router today and saw my IP address change because the new router has a different MAC address and I am just curious on what information my ISP can see from my network. I know they ...
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0answers
41 views

How can I connect to UNC path on an external server in Windows Explorer?

I am using Windows Explorer and would like to connect to a certain IP address. After that, I want to connect to a different IP address through the server. Ex: A -> B -> C A is my current computer. B ...
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2answers
41 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 ...
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32 views

Route IP traffic to different machines based on API call

I have a requirement to route IP traffic on public IP a.b.c.d:xyz to either e.f.g.h:xyz or e.f.g.i:xyz, based upon some known state of those machines (known to my app). The traffic itself would not ...
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1answer
20 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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1answer
48 views

Understanding IP Information Results

Am trying to understand why some IPs like this one shows results in different country. This below output is from using IP Information function provided by DNSStuff.com. This was a key IP in ...
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1answer
58 views

windows 7: assign static IP address [duplicate]

I want to connect two laptops with a crossover Ethernet cable, in order to synchronize them with ntp. One laptop runs Windows 7, the other one Ubuntu. On Ubuntu, in order to assign a static IP ...
0
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1answer
47 views

Cisco gear - finding mac address of a device based on Ip address?

Say, I have some devices connected to cisco routers. I want to be able to query an api or something using an IP address of one of the devices, and receive back it's mac address. Is this possible? ...
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1answer
27 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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60 views

*.org domain websites are not loading

The problem is that any page with *.org domain in not loading on my computer (Ubuntu 14.04). Any other domains like *.com, *.net are loading! This is very strange. I tried in different browsers, and ...
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5answers
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How does a server get notified about the HTTP request?

I have a basic understanding of how HTTP works. I understand the client (web browser) makes a request and server responds back to the request. However, the thing I don't understand is how does a web ...
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3answers
77 views

How does a web server return an HTTP request?

I'm sorry if this is a really stupid question; my networking knowledge is pretty sparse. So, a user makes a HTTP request to some address. That request comes from an address on a local subnet, but the ...
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1answer
28 views

Blocked or masked IP

I had an email returned as blacklisted by AT&T and in searching for a remedy came across mxtools and whitelisted.org. Upon visiting both sites an IP in the UK was default loaded 88.208.246.34. It ...
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1answer
181 views

“DoS attack: Smurf” in router logs - should i worry?

Here is 2 day filtered log from my Netgear 6300 Router. It seems that I am constantly having SMURF attacks. Based on my router settings it seems that I am being protected. I have "Disable Port Scan ...
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2answers
85 views

how to unblock ip address with iptables command?

I get my own ip address (maybe 123.45.6.7). iptables -I INPUT -s 123.45.6.7 -j DROP Now i was blocked myself,when i login server with other pc ,how to write iptables command to unblock myself? I ...
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2answers
80 views

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
61 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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87 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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1answer
31 views

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

I have assigned a IP address to my LAN interface through 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 192.168.4.1 to the ...
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1answer
65 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
24 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 ...