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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ASUS router EA-N66R has different subnet mask than laptop

I have a new ASUS router that works perfectly, and I'm trying to set up an ASUS EA-N66R repeater to use with that router. But when I connect my Ethernet from my laptop to the repeater, the setup will ...
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41 views

New domain not working on computer that purchased it

I recently purchased a domain name from Hover.com for my website. My nameservers have updated and everyone can access the site... except me. Friends from across the US, local friends, other ...
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69 views

Malformed IP Address, new ubuntu installation

I am installing a Ubuntu 13.04 from virtual disc over IPMI, yet when I come to manually configuring my network it tells me my IP address is malformed and should be in the format 'x.x.x.x' when it is. ...
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72 views

Lookup URLs from list of IP addresses

My router log notes activity by IP address but I want to see the corresponding URL addresses instead. Is there a way to derive the URLs from the IPs--in bulk/batch--without having to do it ...
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1answer
650 views

How do I fix SSH sending fragmented packets

My ISP sometimes drops IP Fragments. This manifests itself in SSH thus: I can login fine and run commands that output short strings, but running something like "ps fax" causes the link to lock up. ...
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345 views

Windows Server 2008 R2 having FIVE different IPs?

No idea what's going on. Windows Server 2008 R2 connected to a Buffalo DD-WRT router. I set a 192.168.1.150 static IP on the Windows and NOT on the router. Maybe 75% of the time it works fine, the ...
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2answers
3k views

How to find IP address of router connected to another router?

I'm trying to setup two routers in my home network, and I'm confused here. My system looks like this: http://i.imgur.com/U3dK2SQ.png So the router 2 is connected to the line. And I'm (my PC is) ...
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2answers
951 views

How to configure my 2 router to make them as access points

I have this broadband and the main wireless router: Main Router Also I have two other routers and would like to make them as access points. So All with the same SSID, then the device can choose the ...
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197 views

connecting to mac localhost via windows computer sharing the same network

I'm running MAMP on a mac computer, and can successfully access it from any mobile device (or another mac) via the local IP address, which I've verified via mac > preferences > network. I've added a ...
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2answers
97 views

unauthorized users on network [closed]

I've been told I have unauthorized users on my network: I've since removed my wireless router and just hardwired to my modem, but now I'm needing to clean the junk from my network...I don't know how. ...
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1answer
908 views

How to find CIDR subnet for a public Internet IP address?

Usually I do not worry about subnet of an IP address on the public Internet, but after I began using Amazon EC2 firewall, it got me thinking. EC2 firewall configuration requires an IP to be written ...
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192 views

Regarding IP subnetting process

Professor taught the following scenario. An organization has purchased a Class-C address 216.21.5.0 and would like to use it to address its offices at Arizona, Florida and California. It has the ...
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2answers
79 views

Why APIPA doesn't work with multiple network adapters?

I connected 3 cameras to 3 network adapters in my PC. I don't have DHCHP, so I thought APIPA will do the work. But, camera's installation guide says "If a PC is equipped with multiple network ...
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870 views

Local DNS server is required to use names instead of full IP?

My computers have local IP addresses such as 192.168.0.X. And many of the computers have names such as "MyPC" or "YourPC" etc. It seems on Windows, in most cases, just using "MyPC" instead of the ...
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29 views

Can not assign a specific ip under lan

in LAN under router there is static ips are configured, all connections are working properly and internet also is working very well, except a specific ip which is "192.168.2.2" which was working ...
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2answers
203 views

How are local ip addresses separated from public ones?

How does tools like ping, or any other tool that uses the tcp/ip protocol know that for example 192.168.1.1 or 10.0.0.1 is a local ip address while 8.8.8.8 or 74.142.23.95 are public? are 192.168.x.x ...
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1answer
53 views

What is the device in the middle?

I did a traceroute on an IP address and got these results. I am only showing hop 9, 10 and 11, where it crosses over from my provider to their provider: 9 13 ms 13 ms 16 ms ...
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597 views

Ping retrieves an IP from DNS, but loses all packets

I'm working with a minimal installation of RHEL 6. When I first turned this machine on, it couldn't ping anybody. It turned out that I needed to add the GATEWAY under /etc/sysconfig/networking and ...
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587 views

Access local network through one public IP

I have a local network built up with 8 computers connected to switch. Main node has a public IP, so I can ssh it from external network. Is it possible to access other 7 nodes without assigning public ...
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2answers
1k views

How to block an IP address from a network share

I have to share a set of .docx files from my computer. They are set so that administrators have full control over the shares, and "everyone" has access to read and execute them. I need to find a way ...
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1answer
342 views

Why I cannot ping local IPs on my Mac? [duplicate]

I'm trying to ping local IPs on my Mac but it's not working as I would expect. If I ping 127.0.0.1, there's no problem: PING 127.0.0.1 (127.0.0.1): 56 data bytes 64 bytes from 127.0.0.1: icmp_seq=0 ...
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3answers
348 views

Network addressing without wasting IP addresses

I know how to do the classic "network addressing" when I am allowed to waste IP addresses. For example, if I need to hook up 9 computers, I could use a /28 subnet, which allows 16 hosts to be mapped ...
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61 views

IP range in command line

I am looking to use powershell and task scheduler in windows 7 ultimate 32 bit to redial vpn should the vpn connection drops. I found a scrip ( ...
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3answers
2k views

Unable to ping a Windows machine from Linux

I have Windows installed on my laptop, connected to the router wirelessly with IP 192.168.1.5. My desktop is running Linux, connected to the same router (wired) with IP 192.168.1.2. When I do a ping ...
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186 views

One public IP for dedicated server - a few VPS with the same IP?

I bought a dedicated server. To him I got a single public IPv4 address. On this dedicated server I installed the latest version of VMware ESXi hypervisor. With the help of the hypervisor, I plan to ...
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1answer
117 views

IP conflict on internal network

I have a netgate 8100 that rolls out my DHCP numbers and some of my workstations that have static and most are DHCP. I have one workstation that is reporting an IP conflict and can not find the ...
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90 views

Time out when accessing BitNami Wordpress on another PC within network

I'm pretty new to using network related things, but would really appreciate some help. I'm running WordPress on my local PC using BitNami which works well so far. I wanted to try and access the ...
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1answer
698 views

I'm pinging a server and getting a response, but the server is OFF

I have a server (a simple XP box) on my home network at 192.168.11.2. I've been having trouble accessing it from my Mac, due to a change in 'location settings'. So I'm trying to work it out. I ...
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335 views

How to access internal valid IP through internet?

Suppose I have a router with this valid IP address (it's not real): 9.9.9.9 So this router is identified by this ID. The internet is available through this router. Another computer wants to access ...
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558 views

How to find my computer's IP Address? [duplicate]

I'm a total noob about TCP/IP, now reading some document (Sams Teach Yourself TCP/IP in 24 hours). However, I still don't get some concepts. First of all, when I type "what's my ip address" in ...
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85 views

IP based tunneling using putty

under linux i learnt to establish an ip-based tunnel using ssh, doing this: # background tunnel ip based on tun5 sudo ssh -f -N -w 5:5 root@remoteserver # setup remote: tun5 ssh root@remoteserver ...
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91 views

Reroute IP through another country [duplicate]

How can I route my IP through another country? For example, right now I am in France, and I would like an IP to access URL's through a US IP.
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61 views

Computers not connecting both on the internet at the same time through LAN

I have set a LAN connection between two of my computers, they do connect to the internet, however if I wanted to go online on both at the same time, one would get stuck. My modem is a 'all-in-one' ...
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89 views

Windows XP LAN Connectivity

I have 3 desktops all running Windows XP SP 3 connected to a ADSL Modem-Router. On 2 systems I have assigned static IP addresses and am not facing problems with Internet connection or LAN sharing. On ...
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What is the exact use of a MAC address?

I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
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176 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 ...
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Does the order of entries in the routing table matter?

Does the routing order matter: > route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 123.x.x.151 0.0.0.0 255.255.255.255 UH ...
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1answer
33 views

Emulate Network address in a LAN

My college has a network, their dhcp will allot us a xx.xx.67.xx ip (Wifi), i found that in their lab they use a different proxy that is restricted for our ip range(Squid) (xx.xx.1.xx is their ip ...
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437 views

Changed router ip accidently. Can't change it back

My router ip was 192.168.1.1; I changed it to 192.168.1.107 at the router web interface. Now I know that was bad idea. How could I change it back as it was? I can't access web interface now
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368 views

How to uniquely identify a computer in an online survey

I filled a survey today which states that it can only be done once a month. If I try to do it again, I am not allowed as expected. I am trying to find out how they know that it is from the same ...
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1answer
649 views

Blocking all sites/IP address but Google.se with iptables

Im trying to block all IPs but Google.se. It doesnt work (Site does not display) Here is what I wrote: #/bin/sh echo "Flushing IPTables..." sleep 1 iptables -F iptables -X iptables -t nat -F ...
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1answer
82 views

In LAN, all IP should be private IP or not?

are there any cases that in LAN, host are assigned public IP? if so, why in these cases, public IPs are used in LAN?
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841 views

Network Traffic per process/application windows

I know that there are plenty of applications to do this (like procexplorer) but is there anyway to access the winapi (what method/reference is used) to retrieve the network traffic (TCP, UDP, etc) per ...
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1answer
103 views

default gateway to set on devices connected to routerless auto-ip LAN?

I have a TCP/IP device connected to the ethernet port on my windows 7 laptop. The laptop has a static IP address but is set to use auto-IP devices on the LAN The device can be set to use a static IP ...
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644 views

Multiple Subnets Routed Through Separate Network Interfaces Assigned Static Public IP's Going Through a Single WAN Connection

Question moved and completely re-written here. I have a block of Static IP's from my ISP and I am looking to setup separate network interfaces inside DD-WRT that all go through the single WAN ...
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71 views

How to get the IP of the computer, of searches in my google account? [closed]

How do I get the IP of the computer that made researches in my google account, which was recorded in history that is accessed through my google account? Thanks so much!
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775 views

visit from 192.168.6.145 on my private 192.168.1.255 network?

I have noticed a visit from 192.168.6.145 ip address to my website hosted on my local host 192.168.1.5. My router NetGear (gateway) has ip 192.168.1.1. how is this possible? does it mean that someone ...
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1answer
296 views

How can I find the IP address of my stolen macbook?

Someone stole my computer, and I know their location from Find My iPhone (they're using it right now), but I'm having a hard time learning their IP address. They aren't logged in on Dropbox or Gmail, ...
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341 views

TCP SYN does not reach TCP server

I have a TCP server listening on 10.10.10.101, port 2000, running on a Windows 7 machine. Below is the corresponding output line for the command netstat -aon: TCP 10.10.10.101:2000 0.0.0.0:0 ...
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2k views

How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

This "router" is not a typical situation. I'm using my phone as a hotspot and can only configure a select number of DHCP options. I can manage the limit on how many devices/clients can use my phone ...