An IP address is a unique network-level identifier assigned to a network-enabled device.

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12
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6answers
24k views

How To Resolve IP Addresses To Domain Names?

I know it is possible to resolve IP addresses to host names but can IPs be resolved to domain names?
3
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1answer
3k views

How can I use multiple IP-addresses, multi-homing, on a Windows 7 machine?

Is there an easy way to set up multiple IP-addresses (multi-homing) for a Windows 7 machine? Today the machine is on a LAN and the IP-address is allocated by DHCP, I can change to static address ...
1
vote
1answer
4k views

Do I need the broadcast and network values in etc/network/interfaces?

My ISP has given me two static IPs, and I was just configuring the etc/network/interfaces file and saw that I need netmask, gateway, address, broadcast and network values. I only have the first ...
1
vote
2answers
427 views

Firewall in front of device with public IP address

Is it possible to have a firewall in front of a device with a public IP address without getting in the middle of NAT? I have a server that I need to put on the internet, but I want to put a firewall ...
1
vote
5answers
447 views

How quickly to find the first IP available in a LAN?

Suppose that I am in a LAN with the following parameters: IP: 172.16.20.X NETMASK: 255.255.252.0 GATEWAY: 172.16.20.1 DNS: 172.16.20.1 In order to connect to my LAN, I have to find, ...
1
vote
0answers
44 views

Wireless connection switches off IP address

I have a Lenovo laptop with windows XP and a wireless connection at home. The wireless connection works when initially I switch on the computer. but if I leave it for even 5 minutes, the wireless is ...
0
votes
1answer
95 views

Is there a free software defacto standard for ip address masking while using any application layer in TCP?

Whether I'm using FTP or HTTP or SSH, can you tell me if there is software that I can install that will mask my IP during data transmission? How would this work if my IP address is assigned from my ...
1
vote
2answers
170 views

How to access A-records defined on a server on the other side of my VPN connection?

So I'm not very savvy when it comes to windows networking, but hopefully I can explain my problem clearly. I have a VPN connection to my office network. The VPN connection appears to work fine as it ...
1
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2answers
110 views

Conflicting reports on why my IP address is

http://checkip.dyndns.org/ gives me a different number than what I see when I type in ifconfig in Terminal. The site also gives me a different address than what I see when I run ipconfig in the ...
0
votes
3answers
354 views

Multiple VirtualBox guests - SSH into them

I have a Ubuntu VirtualBox host and two Ubuntu guests. I need to be able to ssh into both guests and be able to ssh to/from guest1 and guest2. I'm really stuck. I've tried NAT settings, bridged ...
0
votes
4answers
506 views

How to recover a server stuck with a bad IP address ? (NSLU2)

I have a NSLU2 (debian server) that was configured for an old network, with a static IP address on Ethernet. Now I've moved, and the server boots using the old IP address, so I can't access it when I ...
1
vote
2answers
2k views

How can I keep the same IP address for one machine in my network?

I have several machines at my home and most of them are wireless. My desktop and my network drive are plugged in to my router directly. I would like those two items to always have the same ip how can ...
2
votes
2answers
1k views

Locally, External IP Resolves to Router Admin

I have a Belkin F5D7230-4 router, and I don't have many problems with it, however one thing which has always bugged me is that its admin page is accessible locally via two locations: 192.168.2.1 and ...
0
votes
1answer
370 views

Mask a class D IP address

Last time I asked about masking class D ip addresses. I found that we cannot mask class D IP addresses. But, now I have another question about masking D class IP addresses: If I want to recieve a ...
2
votes
3answers
3k views

Class D ip address

Is there mask for class D ip address? As it is for multicast, I am not sure about it. I read somewhere that D ip addressas are 32-bit network addresses and they dont have hostID, but in the following ...
1
vote
1answer
4k views

Devolo dLan 200 AVPlus not assigning an IP address

We have a set of three devolo dLan 200 AVPlus (I'll abbreviate to dd2p) set up as follows in our house: modem -> dd2p_1 --> dd2p_2 -> Router 1 --> PC1 | ...
7
votes
2answers
22k views

How to get the real IP address of someone using a proxy?

I was researching digital goods and security when I stumbled upon this company. One of the services they provide is "Real IP". They claim to be able to get the real IP address of users even when ...
4
votes
1answer
1k views

How to really change programmatically ip address without reboot (with no connection too)?

Really, I tried everything, and there is no solution that works for me. WMI - everything perfect, but I can't change ip address when there is no connection. O_o Are you joking me? How can I make a ...
1
vote
6answers
9k views

How can I get the IP address of a remote Unix/Linux machine whose name I know?

I have a Unix/Linux machine aster-star-98 in our company but it's on a different network. How can I get the IP address of that machine? If I could enter the complete address of the machine and ping ...
1
vote
1answer
659 views

Cisco IP communicator unreliable for incoming calls - IP address conflict?

My workplace uses Cisco IP communicator as a softphone for employees. I have found it to be quite unreliable for receiving incoming calls. When my wife calls me, she intermittently gets forwarded ...
5
votes
7answers
23k views

Show all machine's internal IP addresses (Windows XP)?

I have 3 Windows XP machines connection in a small home network. (2 of the 3 have no screen or keyboard.) What's the easiest way for me to find out each of the machines internal IP addresses? Is ...
3
votes
3answers
3k views

Full URI to a file on another machine in our local network?

On our small-business Windows XP network, I have a file in f:\MyDir\SubDir\text.doc What would be the URI for that file while I'm on another machine.... if all I knew was that machine's IP address, ...
12
votes
2answers
8k views

Mac OS X: Please explain ifconfig output?

When I do ifconfig on my Mac, I get a list of the following interfaces: lo0 gif0 stf0 en0 fw0 en1 vmnet8 vmnet1 I wonder what each interface is. Also, which of these is the IP interface ? I don't ...
2
votes
3answers
2k views

Connect to {MACHINENAME} from iPad

I have a website in development running under IIS 7.5 on a Windows 7 machine. From my PC, I can browse to the site via: http://localhost/mysite http://mymachinename/mysite ...
0
votes
3answers
3k views

IP “Address Book” of Countries [closed]

I'm looking for a list, 0-255, which tells the country by the first byte of an IP address. for example 81.0.0.0 here 81 is a country code which I need to know.
1
vote
1answer
853 views

Unable to access bbc.co.uk - “Error resolving hostname www.bbc.co.uk: timed out” - possibly proxy related

I'm having some problems accessing bbc.co.uk. Each time I try I receive the error message: **Connection Error** Unable to connect to the requested site. **Details** Error resolving hostname ...
0
votes
2answers
284 views

Can I disable warnings about IP conflicts?

Running Windows 7 x64 Ultimate. I travel with my laptop back and forth between home and the office, and usually hibernate as opposed to shutting down, so I do not need to reopen all the documents and ...
1
vote
1answer
606 views

Strange LAN failure: what possible cause?

My home machine is intermittently failing to send data (via ethernet) on my LAN. There is a 4 port wireless router, with 3 other devices that are working fine. I've tested two of them with ethernet ...
1
vote
2answers
844 views

Should I use the same IP address and hostname in each OS for dual boot machines?

On my home network I have both a desktop PC and laptop that dual-boot windows/linux. I assign static addresses to all my computers (I have other single OS ones as well). I want to know whether it's ...
0
votes
2answers
1k views

How to filter out information in Wireshark

I am not interested in any information about network activity from any address that starts with 192.168. How can I make Wireshark hide those?
0
votes
1answer
1k views

tools to hide ip and mac address

Are there any fast and free software to: Hide my IP address without proxy server as it changes the layout of the web site and makes it not fast at all. Dynamic MAC address generator to change it ...
2
votes
2answers
3k views

Can't get IPv6 address using radvd on wireless interface on windows, wired works fine

I set up my router to use OpenWRT and set it up to use IPv6 using a tunnel form SixXs. I'm having problems with stateless autoconfiguration using radvd. On my computer, wired connection can get its ...
8
votes
9answers
2k views

Tracking my home IP from anywhere on the internet?

I have an ISP that serves semi-permanent IPv4 addresses. They can't promise fixed IP addresses, but unexpected changes are quite rare. This begs me to ask however: what would be the easiest/most ...
7
votes
3answers
1k views

Why do the IP addresses randomly change?

I have a network with the following: Cable modem with static IP address Router Desktop - Win 7 VM Host - VMware ESXi 4.0 A couple of VM Guests - Windows Every now and then my Win 7 PC is unable to ...
2
votes
2answers
3k views

How to find out what computers are connected to an access point/router using Linux terminal?

I would like to determine what computers are currently connected to my access point/router via the command line in Linux. How can I do this?
0
votes
1answer
902 views

Dynamic to static internal IP address (Snow Leopard server)

I purchased a new Mac mini server, since my old iMac, which was a server pretty much died. My problem is this. How do I change my internal IP address for my mac mini server to a static address, like ...
25
votes
3answers
49k views

Why is Windows' default IP address 169.xx.xx.xx?

My Windows system got an 169.xx.xx.xx IP address the other day, and I fixed the issue, but why did Microsoft chose this address as the default? Why not 1.xx.xx.xx or 255.xx.xx.xx? Did one guy at ...
0
votes
4answers
6k views

Change IP address of the network card?

How can I change IP address of my network card which have an odd IP address 169.254.57.200 which is not known by my router? My router has IP addresses 192.168.0.2 - 168.168.0.254 I have problems with ...
9
votes
3answers
6k views

What is the maximum number of IPs that can be assigned to a given computer?

I really need to know this for a linux server, but since it also applies to client OSes, I figured the question should be posed here instead of server fault.
1
vote
1answer
13k views

Adding localhost entry to Windows\System32\drivers\etc\hosts file with port number

I have set up a local site under IIS 7.5 under port 900. to access it I should type localhost:900 in the address bar. I'm a little bit familiar with the System32\Drivers\etc\hosts file and I know I ...
1
vote
1answer
4k views

Outlook 2010 Block Email by IP Address

I have Outlook 2010. Is it possible to block incoming email using its IP Address? I have had a look at filters and the Junk Emal settings, but cannot find a specific IP Address filter. Question: ...
3
votes
3answers
687 views

Wireless router's ip address

Does my wireless router have an ip address that's independent of my computer's ip address? Is there any way to determine what that ip address is? Note: I'm not talking about the internal router ip ...
2
votes
3answers
4k views

How to bind IP address to MAC address in Windows XP?

I want to bind IP address to MAC address on my computer, how to do it?
0
votes
2answers
2k views

DD-WRT WAN IP Address Lease Time

Is there a way to reduce the lease time of the WAN IP address in DD-WRT? It seems like this should be an easy setting to find, but I'm not seeing it anywhere in the settings.
4
votes
1answer
13k views

Get Hostname from IP address/MAC address

I have a list of IP addresses and MAC addresses connected to my local network, but I need to get the hostnames of each device, is there a command line or terminal (mac) command for this?
1
vote
2answers
343 views

Setup router with 1-1 NAT

How do you setup a router, or if possible the Linksys WAG160Nv2 router to 1-1 NAT. I am asking this as i will like to give one of my LAN computers a Static "External" IP (which i've got from my ISP) ...
1
vote
1answer
537 views

How does tumblr point to your domain?

Lets assume I have a tumblr account: http://sheehan.tumblr.com Tumblr allows it so that it can point to www.sheehan.com if I enter an A-Record. How does Tumblr scale this to millions of users? How ...
5
votes
7answers
8k views

Make dynamic IP address fixed?

I am using Time Warner cable internet service. My IP address changes every couple months. However, I need to access some access limited servers which has firewall rules on it. Is there any way to ...
2
votes
1answer
6k views

How can I allow a Limited User to change TCP/IP settings, while strictly maintaining the principle of least privilege?

In Windows XP or Windows Server 2003: I have a laptop configured with software for network-based vulnerability scanning of systems. The reason this is put on a laptop instead of a desktop or server, ...
1
vote
2answers
5k views

Mac change ip address from terminal

I want to change my ip address from terminal in mac. So i used the following commands. ifconfig en1 192.168.110.1/16 route add default 192.168.110.1 if i change the ip here. It is getting reflected ...