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

3
votes
3answers
79 views

Does a typical home router support classless IP address?

All typical home routers I know of allow us to set a custom subnet mask, and because of this, I am really curious about whether they support the use of classless addressing scheme, meaning that in the ...
2
votes
2answers
8k views

Why can't IP addresses start with 0 or 255?

It was specified somewhere (presumably in an RFC) that Class A addresses range from 1-126 in the first octet, and that class E addresses range from 240-254, but that leaves out two potential networks ...
2
votes
2answers
4k views

Multiple IPs on Multiple NICs same subnet

So, I've got two NICs: eth0 eth1 and I have multiple IP addresses assigned to each: auto lo iface lo inet loopback allow-hotplug eth0 iface eth0 inet static address 10.0.0.194 netmask 255....
0
votes
0answers
33 views

Wifi access not allowing access to all sites (several incoming/outgoing IP blocked by ZoneAlarm) - hacking attempts?

Few months ago I was using my own internet (wifi in my own studio, under windows 7) and I was able to access any website I wanted. However, since few weeks, I moved into a shared housing and also use ...
3
votes
2answers
12k views

How Does a VPN Manage Local IP Addresses

When you have devices with the same static IP addresses on two networks how does a VPN keep them straight? Example: I have a small network in my home office with 3 computers. I routinely connect to a ...
0
votes
0answers
19 views

Can we redirect an external API call by direct IP address to another IP using wampserver?

I'm developing a PHP web application using wampserver. This application interact with an ERP with a direct IP access. The IP changes depending on local testing and production environnement. I want ...
0
votes
0answers
19 views

Receive incoming public IP addresses through VPN?

For a short spell, I ran a VPN server with OpenVPN + iptables on a VPS I purchased, and would tunnel my home server through it, in order to mask my home server's IP address from visitors. This worked ...
2
votes
2answers
14k views

Can't access my IP camera over the internet

EDIT: My problem is solved, please read comments 2-5 and 8,9. 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 ...
-3
votes
2answers
45 views

Will installing Tor on my VPS allow me to hide its IP address?

I want to hide my VPS's IP from hosts it interacts with across the Internet. It is my understanding that using Tor on a home computer would work to some extent, will it work as well on a VPS?
2
votes
1answer
168 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 ...
27
votes
12answers
87k 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.
0
votes
1answer
88 views

Why is my IPv6 Address showing instead of my IPv4?

I am wanting to host a server, and I would like people to join through my IPv4 Address, but when I use ipconfig in the Command Prompt, I only get my IPv4 Address, and when I google "What is my IP" I ...
1
vote
1answer
56 views

Conflicting Public IP Addresses

I'm stumped. ipchicken.com is saying our ip address is 172.68.34.125. All other services (google, whatsmyip.org, etc) are saying our public ip address is 64.207.55.1. It should be 64.207.55.1 ...
1
vote
0answers
20 views

Debian - more network interfaces [duplicate]

I have dedicated server from OVH with additional ipv4, I have added the IP to the system interface configuration (debian), I can access the machine from both IPs now, but for some reason the first ...
0
votes
2answers
77 views

Is it possible to find a remote IP address if I know the local IP address?

I’m connected to a network with a VPN. I need to connect to a device on the same network with it’s remote IP but the only IP I can find is the local one. Is there a way to find the remote IP of a ...
0
votes
1answer
50 views

Two different Network interfaces simultaniously CentOS

I am going nuts since I have been trying to solve this for nearly a week now. Scenario: One Server with two different network devices. Each device is plugged into a different company subnet. eth0 ...
1
vote
2answers
54 views

Determining IP address subnet addres

Having an arbitrary public IP address is there a way to determine the subnet it belongs to whithout knowing the net-mask?
0
votes
1answer
27 views

May I know what are the format of the current ip addresses?

I try to find the ip address of the sender in my Gmail. I googled it and people suggests to look for the "received: from" I expected to see something XXX:XXX:XXX:XXX But I see something AAAA:BBBB:...
0
votes
1answer
35 views

XEN 4.4 How to configure dom0 and domu with different ip subnet on Debian Jessie (OVH)

please help to configure dom0 network. dom0 host is Debian jessie. I need to configure domu to accept different subnet from ip main (dom0) in OVH. Here is topology my network: A.B.C.254 ---- A.B.C.81 ...
1
vote
2answers
3k views

Get IPv6 correctly through another router

My ISP is Unitymedia NRW, Germany. It it a cable (like TV) ISP which has given me a Technicolor TC7200 modem/router. The ISP uses DS-Lite, so I only have a public IPv6 address, and no IPv4 address. ...
3
votes
1answer
154 views

Xen VPS with 2 IPs from 2 different subnets

I am new to Xen and I am trying to understand how to add 2 different IPs on the same guest VPS. First, I am going to explain my node setup, which is a physical server with 32GB RAM and 2 NICs on it. ...
3
votes
6answers
5k views

Windows 10 can't resolve hostnames - ping with IP works but not with hostname

Facts: The browser doesn't load any pages, whether they are addressed with IP or hostname. ping google.com doesn't work, returning Ping request could not find host google.com. ping 216.58.209.78 (...
0
votes
1answer
35 views

How to split static ip into 2 ip's to be sent to two local ip's?

I need to split static IP into 2 ports to be sent for two systems. I have two systems having local IP address 192.169.0.1 and 192.168.0.5 and my static IP is 202.63.90.24. When I ping from outside ...
0
votes
0answers
56 views

Windows 10 not getting ip from DHCP

My PC is running win10 64 bit. I don't know why it is not getting IP from the dhcp, I am sure it's configuration problem, It is getting an IP like 169..... Here is what I tried : 1. Changing router ...
1
vote
4answers
227 views

What layer of the TCP/IP do MAC addresses and IP addresses belong to?

Can anyone also tell me why we have 2 layered models(OSI AND TCP/IP)? Just having a bit of trouble with the question above. Can anyone kindly help?
0
votes
4answers
480 views

Determinte Switch IP/Linux

i'm trying to determine the ip of the network switch several linux boxes are plugged into. Background: i need to know in which physical port they're plugged in, so the machines automatically detect ...
0
votes
2answers
42 views

How to add a second local loop_back address?

I already have a loopback address at 127.0.0.1, which corresponds to a host in the local loopback network 127.0.0.0. How could I create a second local loopback host with an address of 127.0.0.2 ?? ...
0
votes
1answer
273 views

PC can not receive an IP address while my router can

Situation Recently I changed my local network architecture a bit, because of which I now connect directly to my modem with a UTP cable to my pc instead of over wi-fi via a separate router. For some ...
1
vote
0answers
14 views

Port forwarding on Ubuntu

I have got a VPS server with Ubuntu. It has got a static, public IP address. Here is uname -a: Linux VPS 3.13.0-88-generic #135-Ubuntu SMP Wed Jun 8 21:10:42 UTC 2016 x86_64 x86_64 x86_64 ...
0
votes
1answer
46 views

Static IP in dhcp server

I have the following situation: Home network DHCP server ranged : 192.168.1.2-99 I need to set up a static ip for a machine in: 192.168.1.91 I cant set it up from network adapter because this ...
0
votes
0answers
22 views

We're having our receipt printer provide a very unusual subnet mask. Has anyone experienced anything like this before?

Thanks in advance to anyone who can help me out with this. We're using a custom receipt printer which was bricked in DHCP for quite a while. Every method we used to change this gave no result. We've ...
1
vote
1answer
41 views

Is there a chance that an IP packet with the the same source and destination IP can get further to the network?

I have recently run into a discussion on this topic, and I think there is a need for some more detailed technical answer. I want to ask this simple and basic question: When I configure a service on ...
0
votes
1answer
27 views

Are Bouncers just for IRC?

I got to know of a new type of software that allows you to hide your IP address. A Bouncer Now are bouncers just for the IRC network or can I channel all my internet traffic through it ? If so ...
1
vote
2answers
237 views

Apache web server not accessible publicly

I have an Apache (2.4.10) web server running on a desktop with Debian (Jessie, 8). The desktop has a static local IP address (192.168.x.x) and my WAN (public) IP address has been fixed as well (82.x....
1
vote
1answer
29 views

Can I know my router's external IP address without visiting a website?

I want to know what my router's external IP address is. The only solution I have found is to visit a website like https://www.whatismyip.com/ But I don't understand why this IP address can't be ...
0
votes
4answers
1k 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 ...
0
votes
0answers
20 views

Some concept questions about internet privacy that I want to be clear about

Hi in hope of getting more effective answers and help, please only answer my question from the technical point of views. Thank you. Ignore money issue. Assume I am super rich and I can even hire a ...
1
vote
1answer
98 views

Single website inaccessable through broadband / ethernet

I'm having difficulty accessing a single website on either of my two desktop computers, connected to the router using wired ethernet However it will work from my mobile phone connected across wi-fi !!...
0
votes
1answer
45 views

Mobile hotspot IP Address

Let's say I am in Oregon and I have a mobile hotspot with a Maine phone number. When I connect to that hotspot on my laptop, would my public IP show from a range in Oregon or Maine? Are there any ...
0
votes
2answers
61 views

Why do I have an IPv4 and IPv6 address at the same time?

I was tampering with my LAN and noticed that some servers see my external network address as an IPv6 while others as an IPv4. Why?
0
votes
0answers
16 views

What happens after trying to connect to a non existing IP address, within a wireless mesh network, organized by an active routing protocol?

Say I'm a node within a MANET running on OLSR. Within this MANET, there is one gateway who announces the network behind him via HNA messages. Now I(the node) try to connect via a socket(Berkeley ...
2
votes
4answers
1k views

Easy-to-use program for directly transfering big files to an IP-address

I saw this xkcd comic and was horrified that he is actually right: xkcd comic So, is there an EASY program to share files directly over IP? In the spirit of: open it it displays your current IP ...
0
votes
0answers
12 views

Connecting to an alternative modem hooked into the network

My online work requires me to be able to switch IPs for certain testing and debugging and since my ISP is not able to deliver more than 5 public IPs for me to use, I made a bold move and bought myself ...
0
votes
1answer
42 views

port forwarding not navigating to correct internal IP

I have just set up the Netgear C6300 Cable Modem Router and re set up all my internal IP's so my main PC will always be 192.168.0.2 and my server (ubuntu server) will always be 192.168.0.10 I have ...
0
votes
6answers
136 views

How to find the host IP using Auto IP

I have a device that I'm trying to connect to. It seems to have Auto IP working, so that when I plug my machine into it I get assigned the address 169.254.163.41. I need to know the IP address of the ...
0
votes
1answer
34 views

apache loads externally but not locally

I just recently upgraded my internet and Comcast sent me a new router/modem in one; the ARRIS TG1682G. I thought I was having all sorts of issues port forwarding with this router until I took a ...
-2
votes
3answers
298 views

Netstat shows very large number of connected IPs

I just ran netstat on my computer and found a large number of remote IPs connected, at least one of which shows as being from a website which when I googled was listed as a known scam site -- a site ...
0
votes
1answer
29 views

port visible but not accessable

I have port 80 open through my router, I have disabled my firewall, and canyouseeme.org sees port 80. yet I can not navigate to my IP address which is my web server. How can my port be visible yet I ...
0
votes
2answers
19 views

Using the same `WiFi` - not able to access the localhost of my desktop in to smartphone

I have a application which is running in my laptop as localhost:3000/xyz. My laptop and smartphone both are using the same WiFi server. I am trying to access my desktop localhost in my smartphone ...
1
vote
1answer
29 views

Use the Static IP from my root Server to send Mails from my dynamic IP

Here i have the following scenario. I would like to maintain my own mail server due to data integrity and security risks. Also for easy backup etc. The problem is, that my ISP here in switzerland only ...