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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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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48 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
89 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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58 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
54 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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73 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
27 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
47 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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72 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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24 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
105 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
26 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
290 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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32 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
77 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
63 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
353 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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0answers
50 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
67 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
45 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 ...
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1answer
33 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
422 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
40 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
197 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
33 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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17 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
75 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? ...
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1answer
62 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
207 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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1answer
38 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 ...
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1answer
151 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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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
144 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 ...
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1answer
105 views

Giving a switch an IP Address so I can telnet into it

Right, so I've just reloaded my switch resetting the to complete default configuration. It's a Cisco Catalyst 3560. What I am trying to achieve is this: Giving the switch an IP Address, then telnet to ...
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1answer
176 views

What does “ww35” or “ww20” mean in a URL or domain, like in ww35.mydomain.com? [duplicate]

What does "ww35" or "ww20" mean in a URL or domain like, in ww35.mydomain.com? What is they used for? Why when I visit some page using these, receive a message "This IP has been banned". Which IP ...
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1answer
196 views

Why can I access my server from my local network but I cannot access it remotely

I am currently having a weird issue with ubuntu 12.04 where I can access a my server locally but not externally my router has been set up correctly. I have 2 servers I am running at my house one is a ...
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0answers
106 views

Age of Empires II via TCP/IP Internet connection

I have made a lot of research about that, but still no luck. I'm behind a router so I got the specific ports forwaded. Once I create the game on AoF it shows my private IP, when I use GameRanger the ...
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1answer
32 views

By what route do packets travel if I use an external IP address for my home server?

Question If I connect to my home server via the domain name (i.e. via the external IP address), where do the packets travel? Do they travel to the home router, to my ISP router, and then back? ...
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1answer
68 views

Send files between two systems over LAN

I am able to send the files from one to another system connected on same router in a LAN. Now, I connected one more router to the first router to increase the range of wireless connectivity. When I ...
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2answers
101 views

grep to display all IPs in a text file (linux)

I'm writing a script to look for a ping from a certian foreign IP, but I am having some trouble understanding how to format my "grep" command.. Inside my text file is the output from "netstat anp" ...
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2answers
96 views

Do the last 5 digits from an IP Change?

I was wondering if you have a dynamic IP, or a Static IP and you change your ip by unplugging modem, will your last 5 digits from IP be the same or would they change? Also are you the only one with ...
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1answer
63 views

Is there a script to change ip address to bypass filtering?

Is there a script to change ip address to bypass internet filtering? as I know programs like freegate change the ip address to bypass internet firewalls.I want to write a script to do it by myself. ...
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0answers
24 views

Problems with internet connection with bridged connection

I am having a problem with my network, at the moment it is setup like this: Wireless Router - Laptop connected to Wifi - Pc connected to laptop via ethernet and bridged connection between WiFi and ...
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3answers
102 views

Connection closed by [SERVER_IP]

I'm not a guru of ssh but somehow I cannot connect to server with IP and username: ssh -p [PORT] [USERNAME]@[SERVER_IP] Response is always: Connection closed by [SERVER_IP] The problem is on the ...
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3answers
611 views

I changed the IP address on my router and now can't access the web interface

I changed the IP address on my bt home hub 5 router from 192.168.1.254 to 192.168.0.254 because I was trying to connect to an IP camera - big mistake. Now I can connect to the router but there is no ...
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1answer
21 views

How do I use no-ip in broaband connection from service provider?

My computer is connected to a broadband line and I have no access to the admin page. The providers use same ip for all its users, and internal ip is dynamic. So I cannot use the admin page to ...
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1answer
121 views

Unable to change my ip address

I can't change my ip address. When I right click local area connection -> properties, the properties for Internet Protocol Version 4 is greyed out. could anyone help me fix this? thanks a lot. Or ...
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2answers
62 views

IP filtering on a router

I enabled IP filtering on my Siemens ADSL SL2-141 router, and added a single rule blocking Google's homepage address 212.179.180.117: But, it seems to have no effect: I can still access this IP ...
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0answers
221 views

Reply from *VPN IP Address*: Destination host unreachable. Request timed out

I have a device attached to my Netgear router (recording device with an HDD). The IP is the first in the below image: I have a VPN IP set up for it. The getter command for it returns VPN IP ...
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1answer
319 views

how can i forward requests to my own IP address to a local IP address in my network (possibly using named)?

My setup I have a linux server running in my basement. I currently have my router looking to that server for DNS lookup, so I can use named to spoof a bunch of domain names to point to my local ...