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.

learn more… | top users | synonyms

11
votes
4answers
5k 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 ...
1
vote
2answers
109 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. ...
1
vote
0answers
56 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 ...
0
votes
2answers
185 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 ...
1
vote
1answer
50 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
votes
2answers
296 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
votes
1answer
26 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 ...
-2
votes
2answers
48 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 ...
1
vote
0answers
50 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
votes
4answers
160 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
votes
2answers
29 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 ...
0
votes
1answer
153 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 ...
0
votes
2answers
41 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
votes
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 ...
0
votes
2answers
44 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 ...
0
votes
3answers
568 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 ...
1
vote
2answers
1k views

TCP\IP Packet Signature - how to identify such data packets?

I know of a program that can "carve" (look for) TCP IP Packets from raw binary data. The results it presents are the source and destination MAC addresses, the source and destination IP addresses and a ...
0
votes
2answers
30 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 ...
4
votes
5answers
4k views

What cross-platform command-line tool allows me to get my external IP address?

How do I get my external IP address from the Windows and Linux command line? On Windows, ipconfig shows an internal network IP address, but it does not show the external one.
1
vote
1answer
52 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 ...
0
votes
1answer
25 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 ...
0
votes
2answers
65 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. ...
92
votes
13answers
9k views

Must TCP use IP?

Is it true that TCP is short for TCP/IP and they mean the same thing? Is it possible for TCP to be built on top of another protocol besides IP?
0
votes
2answers
72 views

How to view masked IP adress and port?

In my friends work place there is normally a broadband network and they PC's connect through Router and there is one website like this <10.1.1.7:9095> and i really wanna figure out what this ...
1
vote
1answer
752 views

What is major network mask and subnet mask

I've been served with a question to find Major Network Mask and I've only given Host IP address and sub-net mask. I have to find the Major Network Mask using Host IP and sub-net mask. Another ...
0
votes
1answer
214 views

How to force to send data to router (on L3) instead sending directly? (on L2)

I have a public IP-addr on one machine: a.b.c.156/32 The GW is a.b.c.133 (which is in the /27 network with its gateway a.b.c.129) I statically added an arp route: sudo arp -an a.b.c.133 at ...
2
votes
1answer
224 views

Is there a way to detect a LAN's IP and its subnet mask?

I'm not a English speaker, but I'll try my best make it clear: If your laptop connects to a unknown local network (through a wireless or wired router) and there's no DHCP service at all, and nobody ...
0
votes
0answers
43 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 ...
0
votes
3answers
46 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 ...
2
votes
1answer
625 views

routing a secondary IP-addr. of a different private network on the same interface

Typical home-networking xDSL setup on a TG782 router/gateway. Hosts on the local private network are allocated IP-addresses in the range of 192.168.1.0/24 and can get to WAN through the aforementioned ...
1
vote
0answers
469 views

iproute nexthop not working - defining multiple default gateways

I have several point to point connections and I’d like to use all of them as default gateways. I saw this link which explains how to do this using load balancing by calling ip route with a next hop ...
3
votes
1answer
763 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 ...
0
votes
1answer
3k views

IPV4 Lan 2 IPs remove 169.254.* from nic

When I ipconfig: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 172.30.2.194 Subnet Mask . . . . . . . . . . . : 255.255.255.0 IPv4 ...
1
vote
0answers
55 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 ...
0
votes
2answers
2k views

Spoofing internet ip on ubuntu

I want to spoof my internet ip on my Ubuntu 10.10 system so that I can access country specific websites. Can some one please tell me how to go about this?
0
votes
2answers
136 views

How come I have an internal IP address on an android smartphone

I just played around a little with the Speedtest app for android from Ookla, it shows that I have both internal and an external IP addresses. I understand that I have an external IP address which is ...
4
votes
3answers
620 views

finding geolocation from an ip address

How can I find a location such as city/state or country from an ip address? Is there a ruby gem or python module to do this? Or if there is a website which has an API.
2
votes
1answer
503 views

Hiding my location to websites with region-specific languages/content

I just went to download Microsoft Secority Essentials and it enraged me as it redirected me to a site in my home language and not the default English. If I go to America, I don't want them to speak ...
1
vote
1answer
640 views

Remote and Local IP address - determine location

There is way to determine location (on a map) remote IP. Was wondering how to determine user location if I now local IP?
0
votes
1answer
141 views

check if two IP addresses belong to the same router

I have several hosts from which I traceroute to the same destination. Is there a way to determine whether two IP addresses belong to different interfaces of the same router? Is it enough to check if ...
0
votes
0answers
39 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 ...
1
vote
0answers
107 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 ...
1
vote
1answer
209 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 ...
2
votes
1answer
34 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 ...
0
votes
1answer
22 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 ...
7
votes
1answer
6k views

How many characters can an IP address be?

I have to create a field in a mysql table to store ip addresses. I need to know the maximum characters an ip address can possibly be. Whether ipv4, ipv6 or some other type that can render a valid ip ...
1
vote
1answer
51 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 ...
2
votes
1answer
88 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
votes
1answer
50 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? ...
0
votes
1answer
61 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 ...