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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Randomize my public IP

For some reasons, I want my computer/Local Area Network to have a different IP each time when I visit Google, or any other website. How can I do that without Restarting the router? Use different VPN ...
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How many hosts can an IPv4 /22 network handle at most?

This came up in a test question and I would like to know the real answer as the possible choices confuse me. How many hosts can a network handle at the most, based on the following address: ...
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How to mitigate IP fragmentation attacks before reassembly when authentication information is available?

I'm trying to filter incoming traffic to high bandwidth, low latency network, to mitigate DDOS. The incoming traffic is custom UDP (I'm setting the protocol specs so I can force IP headers if ...
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221 views

Batch Capture incoming Netstat IPs as variable

I'm trying to figure out if there is a way I can capture (and if possible, log) the ip addresses displayed from 'netstat' command. I'm trying to make a script that waits for a ping from a specific ...
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32 views

How to change ip address into a name customized

I can access my local WAMP with 192.168.1. However, I wish to make it prettier. Can I somehow make Apache recognize 192.168.1 as text similiar to a website (i.e. mysite.com or just mysite)? How can I ...
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73 views

How to eliminate the downtime when a dynamic IP address changes?

We currently have a number of client computers linked up to a database server (MS SQL 2008) for replication. The database server recognises the computers based on their Windows hostname. We are using ...
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2answers
611 views

Is there any way to abstract IP address during ssh?

I have a server which is in the middle of a forest. It is connected to the Internet via a microwave link and an ADSL link.Hence it has two different static IP addresses. Now if there is heavy rain, ...
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127 views

Can the MAC address of the USB stick broadband connection be traced together with the IP address?

Can the MAC address of the USB stick broadband connection be traced together with the IP address? Also, the mac address of the broadband stick used, computer or network card inside the laptop, etc.?
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796 views

Setup shared internet connection on virtualbox with fixed IP

I am a web developer and until recently I have been using ubuntu as my OS. For many reasons, I have switched back to windows. I still want to keep my server on linux platform, so I setup my local ...
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62 views

Zombie cookies are apparently stored in different locations, inside a computer, common to all Web Browsers installed on that specific computer, right?

Zombie cookies are apparently stored in different locations, inside a computer, common to all Web Browsers installed on that specific computer, right? Does the same process works when someone is ...
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If you visit a website they will know your IP address. But what about when you change broadband connection?

If you visited a website, of course they will know your IP address, right? But what about when you change your broadband connection? Will they still know that it is still from the same source or ...
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330 views

Access web server on LAN using IP fail

I have a web server in my LAN with IP: 192.168.1.103, I can only access the web server from browser in this computer through http://localhost:8080, I cannot access it through 192.168.1.103:8080, nor ...
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150 views

What information does an IP address provide

For example, if I use a web app that saves my IP address, what can be inferred from it? What can be deduced from an IP address (and to what degree of certainty)? Is it always possible to determine a ...
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1answer
123 views

Can next hop address be same as destination address? [closed]

Like if host address is 100.0.0.1 and next hop address is 100.0.0.2 and destination ip address is also 100.0.0.2 Is this a valid use case? Any real life usage? <dest ip> ...
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2answers
484 views

Is it possible to map static IP to computer name instead of MAC address?

I have a number of computers with different computer names connected to the network. They currently hold a static IP address based on their MAC address. In other words, the static IP address is mapped ...
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42 views

localhost IP address without network

I noticed that when querying ipconfig in cmd, I get the IP address only if I am connected to the Internet or another network, but nothing comes out when I am disconnected. In this case, what is the ...
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2answers
85 views

How to find largest possible IPv4 network within specified range

Let's say, we are given a range of 192.168.101.64 - 192.168.102.128. What is the easiest way to find the largest possible IPv4 network within specified range, including network address, subnet mask ...
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1answer
450 views

Is computer name a hostname that I can point it to an IP?

On my Windows7, when I get into the properties of My Computer, I can see that my computer name is compname123. It seems that when I ping or connect (say remote access) to this computer from another ...
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402 views

Re-assign IP address for VMWare image that is already running

I'm using VMWare Player. When an image running CentOS (Linux) 6.5 boots up, VMWare Player assigns an IP address dynamically (probably using DHCP) to that image. I'm assuming the IP address on the ...
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75 views

CIDR < 5 not allowed

Problem Two NICs have been connected using an ethernet cable. The ethernet adapters have been configured as follows: NIC I IP: 8.0.0.1 Subnet mask: 248.0.0.0 NIC II IP: 8.0.0.2 Subnet mask: ...
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2answers
85 views

How does wlan interface receive 802.11 management frames?

From what I have read, hostapd (its used for creating a wifi access-point) creates a mon0.wlan0 interface to send and receive wifi management frames ...
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1answer
139 views

Social Engineering Toolkit - Hosting website over VPN?

I have set up a 2. Website Attack Vectors using SET and I get confused when I need to use IP for hosting website. So the question is how do I do it ? I have static ip by using vpn as well as many ...
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251 views

Is it possible to “ping” an embedded device connected through a JTAG interface (USB)?

I currently have an atmel at91sam7x256 embedded device that is connected to my Windows machine through a JTAG interface of USB type. I am having difficulties getting the ethernet port to work, and ...
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4answers
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Setup static IP under Ubuntu 14.04 Trusty

How to setup static IP address under Ubuntu 14.04 Trusty? My setting is not working. What special about Ubuntu 14.04 Trusty is that I found it now using the "source-directory" keyword to source ...
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386 views

Unable to receive UDP broadcast packets on PPP connection

I am struggling for two days now with no success. I have two modems (do not ask, some special stuff), that uses dial up (PPP) connection. I tried this on windows XP and it works like a charm. I am ...
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164 views

Ethernet port on Linux machine not recognizing ethernet connection with embedded device

I have an atmel at91sam7x256 microcontroller that I would like to use for a TCP/IP communication. The very first step of my project is to be able to "ping" my board given its IP address. I have its IP ...
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52 views

macbook pro only pulls private ip

I'm on a mid 2011 mbp and I've now connected to two different routers and two different cable modems via Ethernet. I've tried manually assigning the IP addresses for the routers and no matter what I ...
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23 views

Additional ip addresses along dhcp

On windows it seems possible to add arbitrary ip addresses on the interface, but as soon as you add one, the addresses obtained with DHCP is removed. Is it possible to set static ip addresses while ...
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67 views

Retain information by an IP address [closed]

What information can I get only by having an IP address ? For example: Computer name, domain name, dns servers (if it's a server) etc. Thank you.
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215 views

How to block ip range in mac OSX?

I have some troubles with connections from ip 146.66.*.*. How to block them in OSX Mavericks without using external software if possible ? I know iptables on linux but I have no clue for mac. Note ...
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5answers
3k views

If IP addresses are unique, why is it so many routers have the address 192.168.1.1?

I have a beginner's question. If the IP address is your identity on the Internet and it is unique. Then how come every router's IP address is 192.168.1.1 and PC1 is 192.168.1.2, PC2 is 192.168.1.3 and ...
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807 views

Is it possible to get different external IP Address for two different computers that connect to the same router? How?

I want to play an online game with my brother, but the game seems to prevent having two users use the same external IP Address at the same time. Is there any way to have two different external IP ...
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99 views

Keep IP and MAC address when cable is unpluged

I have an application that look for ethernet interface and only works when at least one ethernet interface with an static IP and MAC address exists. this should show in ipconfig. I have an on-board ...
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1answer
648 views

Is listening on a port on the localhost of a server the same as listening on that port of the server's public IP address?

I set up a free Amazon EC2 instance in order to use a Node app outside of my localhost environment. The instance is allocated a public IP address at launch, mine for example being 54.187.31.42. Does ...
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58 views

Interpretation of the unix command: ip address

I have to interprete the result of the unix command: ip address I'm getting something like this: 2: eth-man: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen ...
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Ask dnsmasq the hostname used to find to an IP address

I know I can find a DNS name from an IP address by using a reverse translation DNS query. But that just gives me a DNS name for that IP. Instead, I'd like to find the DNS name that was used to find ...
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1answer
127 views

Why would an IP address fail, but the server (hardware and web server) and file system work?

Please forgive me if this is a duplicate, or better on network engineering SE. I have an account on BlueHost, and it provides me configuring multiple dedicated IP addresses and multiple SSL ...
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2answers
404 views

Wordy IP for internal devices

Hi I would like to have a ip to connect to devices on my network at home, however I don't want to have to remember lots of numbers instead I would like to have address that uses words. For example I ...
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1answer
133 views

How can I connect to a router through a switched ethernet network?

I have a computer and a router connected at different positions to a switched ethernet network. I want to connect them as if I had plugged my computer directly into the router. As I understand it, ...
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How can I acces my raspberry pi server from outside my network?

I've got a Raspberry Pi set up as a server. I can acces it with 192.168.1.2, because i'm in the same network. Now I would like to be able to acces my Pi from outside my network (eg school). I want to ...
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130 views

I want to ping IP using LAN cable not wireless

I have one machine connect to network using two method : Wireless - got internet access - Class C ip : 192.168.2.xx - Connect with local network with few PCs. LAN do not have internet access ...
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394 views

difference between network id and subnet id

Typically a classful ip address will be split into a network id and a host id, like in the following example: $ route Kernel IP routing table Destination Gateway Genmask Flags ...
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38 views

Preserving packet order

In my understanding among the many responsabilities the iso/osi model link layer has, it has to make sure that the ordering of packets is preserved. Can you please clarify to me what the point in ...
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2answers
103 views

Apparent IP doesn't take me to website

I noticed that sometimes, when ping requesting a website, I receive an IP Address that doesn't in fact take me to that domain name. It instead takes me to the default server page. For example, if I ...
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2answers
167 views

How to find slash format of an IP address?

For example, in this IP address: 145.32.59.24 the slash format should be /16 in the answer. But I have no clue how this to determine it. I understand this is a class B IP address. Please help me.. ...
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864 views

How can I change my ip address from dynamic to static? [closed]

I am on Windows 8. I want to change my IP address to a static address. I have tried putting up a dummy static address like 192.16.16.16 but it does not work. Please guide me. Thanks. My network ...
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105 views

VPN and Local IP Address

I am using a VPN service. After recently installing a program that monitors ports, I noticed that whenever I am using my VPN, my local IP address changes. I am aware that the external IP should change ...
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4answers
1k views

Bind IP address to application

I have multiple network interfaces on a single machine. I am wondering how I can bind a network interface to an application. Example: Network Interfaces: eth0, eth1 Application A use dummy0 ...
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1answer
230 views

How to forcibly refresh and renew my IP address? [duplicate]

I am in the Hostel and we are provided with Wi-Fi connectivity.The problem is that the IP address that is assigned to my machine works only for 5-6 hours. I want to refresh the IP address so that i ...
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105 views

Classful addressing and routers networks [closed]

With classful addressing there are basically three classes of networks, a public or private organization can request,for its hosts,a network of class A,B or C with A being the largest followed by B ...