Why is host down when I ping an IP Address?
825267
It may be behind a firewall...
925836
You can send a ping request to any device directly connected to the Internet as long as you know it's IP address. If you are sure you know the person's IP address and it still isn't working then it may be that a firewall on your PC (or his PC), or some OS setting, is blocking the request or the response.\n\nNote also that if your friend's is behind some type of proxy server you may only be able to ping that server.
147621
It's possible the IP address you are conflicting with is an assigned IP on another machine. I would try and track down the machine you are conflicting with and ensure it's set to "obtain ip address automatically" and not a hard coded IP address.
1124027
If you have a dynamic IP address, it changes all the time.\nIf you have a static IP address, you can ask your ISP for a new one.\nTo find out what kind of IP address you have, talk with your ISP.\n\n(You can't set your IP address on another PC)
227156
Try resetting your router, if your running a network.  The router table in the router could have some of the ip addresses messed up.\n\nI had trouble accessing some websites and a few were very slow loading.
55113
The system variable <insert a dollar symbol here>_SERVER['REMOTE_ADDR'] contains the ip address of the visitor. Is that what you want? Frame your wquestion clearly plz.\nHere replace <insert a dollar symbol here> with $\nIf i give that $ symbol there, yahoo doesnt allow my post.
971695
it can not. 127.0.0.1 is loopback ip. It is nothing but ur machine.
930424
How many IP address do you have assigned to you? If you only have one that might be your problem.\n\nIf you are running your computer through a router then I am afraid I am not able to help you.
938979
I would do the following....\n\nGo to your run box from the start menu... type 'cmd' and press <enter>\n\nFrom the command prompt type the following 'ipconfig /all'\n\nLook for the default Gateway (probably 192.168.1.1)\n\nType the following 'ping 192.168.1.1' or whatever was displayed as the default gateway.\n\nIf you receive a reply from this address move onto step 2...(i.e. reply from 192.168.1.1 ......)\n\nIf you do not recieve a successful reply (i.e. Request timed out) your Internet router or wireless gateway is down or needs rebooting.\n\nSTEP 2\nLook for the DNS Server address(via the Ipconfig /all command as above)... again should be an address in the xxx.xxx.xxx.xxx format.\n\nPing this address by typing 'ping xxx.xxx.xxx.xxx'\n\nIf successful you most likely have internet connectivity go to STEP 3, if not your internet service is probably down.\n\nSTEP 3\nFrom the command prompt type 'ping www.yahoo.com'\n\nIf successful..something is wrong with your browser...\nIf unsuccessful contact your ISP and tell them you are not able to resolve Domain Names...\n\nHope this helps!
916882
just restart the pc and it will all be ok, see we have dynamic IP addresses so the change every so often,maybe the are changing when you  there is no activity on your connection and since your pc is on stand by it doesnt receive the change.
553538
Maybe the DHCP provided (if you get your DNS from DHCP) DNS Servers are not responding in time. I had my ISP change the primary and secondary DNS servers and my connection when to crap.  Through the VPN, you're probably using your company's DSN servers.\n\nCheck to make sure your primary and secondary DSN server respond.\n\nIn windows, open a command shell. Type "nslookup yahoo.com" and see if you get a response.
319778
ping -a <ip address>\n\nTo query a specific DNS server use NSlookup from command line then do a ls for PTR records.  Or use an online IP whois tool.
479465
Try start run type "cmd" enter, black window up and type "ping www.yahoo.com" (if yahoo is the site you cant reach) enter, if time < 100ms, and no request time out you should be fine.\nTry other time of the day,\nTry the connection with another machine\nCheck the router setting \nCheck if firewall blocking access
1157568
Hi..\nI just gone through your setup...\nWell i would like to recommend few changes, if you dont mind!\nShift to a powerful free server as Abyss Webserver: http://www.aprelium.com/\n\nAnd for the Dynamic DNS option, i would recommend, using DynDNS Software...its more sophisticated & powerful mapping your dynamic IP changes to your local server!\nCheck: http://www.dyndns.com/services/dns/dyndns/\n\nRegarding your HTTP request not served.. i would recommend you to run your server other than port 80..the common HTTP serving port!\nThis happens because many ISP's block these port from serving the content..\nSo run your server on any other arbitary port number like 5581\nWhile, in the dynamic server mapping...give same port number!\nSo, you can access your site locally as: http://localhost:5581\n\nTry it.. i am sure you can get it working around!\nBest of Luck..
788851
make sure your dhcp server is reachable from your computer. Most of the time its a firewall blocking it so turn off your firewall.\n\nAlso, make sure you dhcp is actually running. ;)
248047
probably the easiest way around the ip address problem is to buy a router and use one that the router assigns I hope this helps but I have never tried it. Good Luck I have a router but have never tried to host a website on a certain IP address.
131143
127.0.0.1 is known as your loopback IP address. That connection is completely internal to your own computer, it is not connecting to an outside computer.