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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Dynamically discover new IP address of device upon new network

I carry my phone and laptop with me everywhere, and I have many software solutions that communicate through Wi-Fi. (For example, I can play/stop/pause the music on my laptop using my cell phone). ...
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3answers
56 views

Why must we supply a port number in addition to an IP when sending a request?

I have a decent understanding of the practical use of ports and how they work. However, I have a few questions I would like to clear up. What happens if we send a request without specifying a port ...
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1answer
185 views

uTorrent displays a nonexisting local IP address as replicated ghost peers when there is no actual peers

This happens only when the torrent has no real peers. When there is at least one real peer connected, this doesn't happen. The address 192.168.56.1 is not configured to be used for any purpose. There ...
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0answers
81 views

firewall detecting outgoing connections of weird hostnames

Recently, I am monitoring every outgoing connection with the help of my firewall. Sometimes when I want to connect to the Internet I receive alerts that some strange looking hostname is going to have ...
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3answers
61 views

Connect Monitor to PC without VGA?

We are looking to connect a 40" (approx) monitor to one of our workstations to use as a display screen in our reception area. The problem is the screen will be quite a distance from the workstation ...
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3answers
220 views

How to retrieve the IP if all I know is the hostname

I'm wanting to run nmap on a linux machine but all I know is the hostname. I'm on the same network but cannot figure out how to do this. All I want to obtain is the IP so I can run scans on it. How ...
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1answer
37 views

DNS resolvation of a URL [closed]

Can anyone explain the various steps to resolving a domain name to ip address when we type an url example.com in our browser and how it returns the page example.com to user by traversing the ...
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0answers
153 views

How can i have an NAS on one network be available on another network using windows server 2008 using two network cards?

Ammended I have two independent networks that, due to security reasons, cannot allow access to each other. Yet, I have a QNAP NAS on the Public network (A), which needs to be accessed from the ...
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1answer
48 views

Strange Item on DHCP Client Table

I was recently having internet connection issues and looked on my router's DHCP Client Table. An item that stuck out was the name of my neighbor's WiFi Network. The table listed "Neighbor's WiFi ...
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0answers
33 views

Arris router not accepting current IP

I left out my IP for obvious reasons. I'm trying to port forward (to play risk of rain, as evident from the title) my Arris router. The model is TG852G. My problem comes when trying to create a ...
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1answer
65 views

Different Amazon EC2 instances with same IP

I am looking at building something similar to a CDN and am wondering if it would be possible to do this with EC2 instances, setting their IP address to be the same? I would like to use the Anycast ...
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42 views

Share Access Web App Using Public IP Address or Blogspot

I found out that Access 2013 has many useful web apps. The problem is, I don't have a Sharepoint or 365 account (As mentioned here): ...
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1answer
127 views

Split Tunneling: How do I know which IP addresses should go to the VPN network?

I have setup my VPN client (VPNC Front End) to use split tunneling. After the VPN is connected, I have a script which adds the routes for all of the IP addresses that I know should be routed through ...
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1answer
99 views

Split a LAN with a low-end router

I've a normal LAN, connected to Internet through a DSL router, with private local IPs 192.168.1.1/24. Now I would like to use a low-end router (like a commercial Zyxel) to split the LAN in two, ...
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0answers
25 views

distributing total network bandwidth suitablly between connected nodes or access point like ISP's

I want to know how should I distribute the total bandwidth of the network which is calculated by different traffic of network users , through the other nodes and devices over the network.
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1answer
3k views

Ethernet connection shows unidentified network with no internet access

For years I've used a physical Ethernet connection for my internet access, then a few days ago it went down and said it was an unidentified network with no internet access. I dug out a wifi card and ...
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2answers
156 views

Connecting to Local IP Address vs Public IP Address

Suppose I have two computers in a LAN, and they connect to a router to share a public IP address. One has port 22 forwarded to it by the router. If the second one connects to it using its private IP ...
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0answers
357 views

HDMI “Video Over IP” hardware

I am interested in using my wireless home network to live-stream video sources such as DVDs, my Raspberry Pi or anything else that is connected to my home receiver. I would like to then send this ...
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0answers
68 views

How many packets lost is “affordable” in terms of stable network?

Recently I've been having some issues with my internet connection. My mom complained that internet stops working sometimes and it comes back after a while. It didn't happen to me, but did see it ...
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2answers
198 views

Strange IP addresses given from router.(ISP limits number of addresses?)

Let me explain the situation: I have wireless router, that connects to DSL modem, that later goes to ISP(by f-connector if it matters). Then I have two problems with it: 1) Wireless router gives the ...
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0answers
88 views

Using Tap/Tun to intercept packets at IP level

I am working on a research project involving ARP poisoning. I would like to intercept packets on the IP level. If my machine receives a packet with an IP address not destined to it's own IP ...
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2answers
72 views

How can I monitor my internet traffic while infected with trojan or rootkit?

How can I monitor my internet traffic while infected with trojan or rootkit ? Which application should I use ?
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0answers
129 views

DHCP letting multiple devices get same IP address - how to trouble shoot?

I am using a win2008 server with AD to also serve DHCP and DNS. I have some wifi AP's that are giving me trouble (dropping connections and generally misbehaving). The issue that I notice is that the ...
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1answer
28 views

Obtain IP address logging data from firmware? other non-hdd memory?

Is there a way to find a history of internet sites (IP addresses) a laptop / computer has communicated with, without having the hard disk installed? In other words, is this data logged into firmware ...
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1answer
56 views

combined VPN shortcut

After creating a VPN connection shortcut for the desktop -- and also creating a shortcut for the private IP (10.1.2.145) that I go to after establishing the connection -- I began to wonder if it is ...
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0answers
139 views

Blocking Incoming IP With Win 7 Firewall

This question was asked before, but the answer is not working for me and the rules of this forum say do not respond to answers, so I am asking again. I went through the following process on the Win 7 ...
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25 views

Trying to figure out NAT between modem and router

I just bought a new DSL modem and I'm trying to set it up optimally for my small home network. There are a few computers and smartphones which access the router which handles ethernet and Wi-Fi, then ...
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5answers
245 views

Trying to understand IP packet flow

So I'm having trouble understanding how packets travel from one machine to another. Below I've put in an example of Computer 1 trying to connect to Computer 2. Computer 1 IP: 192.168.1.11 Subnet: ...
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1answer
56 views

Managed USB Switch [closed]

We have 4 computers controlled by an KVM-over-IP switch, so we can remotely control the keyboard and the mouse and can see the screens. Now, we need to connect an usb flash device to that computers - ...
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2answers
3k views

What is the reason for Windows IP address conflict?

I get this message once in a while when using the Internet from a PC with Windows 7: Windows has detected an IP address conflict. Image of the error: Thanks for any pointers.
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51 views

connect to (“remotely”) local IP if router has VPN to remote server

I am confused by how this works. It took me two days, but now I see some connection from my DD-WRT router (as PPTP client) to a remote VPN server, e.g. issuing the command route on the router: ...
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1answer
180 views

Hide IP from flash objects

Running a flash plugin will make it able to retrieve my real IP address even if I'm using a proxy. Is there a way to prevent that?
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1answer
90 views

How to find IP Address without asking the user to check it or remote connecting into the user's computer?

How do you find the IP address of a user's computer (without asking the user to check it or remote connecting into the user's computer)?
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2answers
640 views

How to get a list of domains blocked by my ISP/MikroTik router?

As imposed by my government, my ISP blocks some sites, like Facebook and YouTube. The ISP's MikroTik device redirects the blocked websites to a local IP address (192.168.222.66), which says that the ...
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87 views

how to check if ddwrt vpn client reaches remote subnet?

I spent many hours trying to setup a VPN connection from my router to a VPN server where I have an account. After upgrading to a newer build, I finally see some entries after issuing ip route on the ...
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1answer
91 views

Subnetting/Network splitting

I have general Networking and Subnetting Knowledge, but I am unsure on how to go abouteven beginning to answer these question [spleitting the network then answering the questions below]. If anyone can ...
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1answer
46 views

Should my server ever need to directly communicate with the NAT gateway?

What I mean by ``directly communicate'' Does it ever need to receive packets with the gateway's IP address as the source IP address, or send packets with the gateway's IP address as the destination ...
0
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1answer
52 views

How to setup routing on a Windows 7 machine

I have a machine with 2 network interfaces. The network itself looks like this | access point | wi-fi | my machine | | 2-nd machine | | 192.168.1.1 | ...
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1answer
2k views

Windows 7 setup routing between 2 networks

Situation: | access point | wi-fi | my machine | | 2-nd machine | | 192.168.1.1 | --------- | 192.168.1.37 | Ethernet | | Internet ---- ...
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1answer
44 views

Need a way to use 2 networks to access the server in parallel sharing data traffic

I have a server connected to Internet via two networks - A microwave link and an ADSL Link. The server has been assigned static IP address in both network. Both both the networks are not reliable and ...
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0answers
314 views

Can't externally ping my server

I set up an a Ubuntu Server with LAMP and am trying to access it externally. What I did: I set up an account at no-ip.com following this article I gave the server a local static ip of ...
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1answer
38 views

How to set some static and some dynamic IPs for different computers on 1 router/modem?

So I currently have 3 rasberry pi's stacked up connected to my network. My router has a built in modem (Actiontech V1000H) which has 4 LAN ports and 2 WAN ports? Not very sure, I dont know the ...
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0answers
24 views

what happens to my IP my inner VPN uses if my outer VPN channel breaks down?

I want to use a VPN tunnel within a VPN tunnel. So I establish a connection first, and then another one, which will already by routed via the first. The first is the outer one, the second the inner ...
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1answer
116 views

NAT in local IPv4 to extern IPv6

I have a cable router with an outgoing IPv6 address. In my lan I have IPv4 addresses. I want to access to my local server from internet. I am not familiar with IPv6, is there something like NAT? ...
1
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1answer
78 views

Peer-to-Peer communication in NLB cluster

I'm a system administrator at a library in Holland. Our personnel uses thin clients which are making a remote desktop session to our session servers. We have two session servers (Windows 2008 R2) ...
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1answer
439 views

add multiple static ip addresses to a server with systemd-networkd

We have a server with multiple IP adresses. Lately we migrated to systemd and we still need mutliple IPs on that server. With systemd-networkd we have some trouble finding a configuration example. so ...
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votes
1answer
48 views

How can my server announce its presence to everyone in the network [closed]

The situation is as follows. I want to have an application running on a server. All of the desktops in the company has to connect to it. But I do not want the IP address of the server to be hard coded ...
1
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1answer
176 views

For my own DNS server, “dig … @ip-address” works, but “dig … @domainname” does not

I've recently begun virtualizing servers - one of which is a DNS server running BIND 9 on Debian 7. My DHCP server correctly issues it as the primary DNS for the network, but I get the following ...
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0answers
56 views

DNS server won't work! [Bind9 running on Debian 7; virtualized through Proxmox 3.1] [duplicate]

First I'd like to thank everyone in advance for helping me - communities like this are exactly what amatuers like myself need when faced with perplexing issues. I've recently begun virtualizing ...
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1answer
186 views

Unable to access website via hostname, but able to access via IP

this is probably a newbie question, but I won't learn if I don't ask :) I have a ubuntu webserver that hosts my website, and I have a no-ip account that provides the hostname. I was able to access ...