Safari 4.0.3 constantly "disconnecting" from internet

Hi there,
I have a new iMac 24" and I am having a problem that Safari on a regular basis tells me that I am not connected to the internet. I run the Network Utility and it says I am connected and can ping outside addresses. I have PCs on the same network and they are able to connect to the internet without any problems.
Is this a know problem?
Thanks
Tony

HI Tony,
Have you tried resetting the cable modem? If that's what you are uisng... disconnect from the power source for about 20 seconds, then reconnect. Somestimes recylcing a modem can help.
You are using a network so try a different Airport channel.
Open AirPort Utility, located in the Utilities folder in the Applications folder on a computer using Mac OS X.
Select the device you’re setting up, and then click Manual Setup. Enter the base station password if necessary.
Click AirPort in the toolbar, and then click Wireless.
Choose a new channel from the Channel pop-up menu.
Open System Preferences/Network and click Advanced. Select the Proxies tab. Make sure none of the protcols for a proxy are selected.
Try Open DNS
No, not a known problem.
Carolyn

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You can't discount your router just because the other devices work. The first thing I'd recommend doing is restarting the modem and router, then checking the router has the most up-to-date firmware (need to check that owners manual) and then you can check some other things like DNS settings and router channel conflicts with neighbors.
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SOLUTION to your HP printer going offline and/or constantly disconnecting from the network

If you are having a problem printing, scanning or faxing with any HP Printer because of it going offline and constantly disconnecting from the network, here is the fix!
I figured this all out after many unsuccessful attempts with HP Support, my Internet Service Provider and various troubleshooting tasks including reinstalling HP software over and over and over. Well, through self teaching on the internet and 6 grueling months of research, I FINALLY figured it out. OMG! I am a Paramedic (not IT) and somewhat computer literate but by far no expert. I here all of you! Nobody seems to have the answer but I am 97% sure that I do. Either way, please reply back and let me know that this did in fact work for you! :-)
It doesn't matter if your printer is installed wirelessly or wired. Don’t worry about reinstalling your software, no recycling your printers’ power or your Router/Modem. The reason your printer is unstable on the network and continues to either go offline or disconnect from the network is NOT because the software is glitched, it’s not a firewall problem per say, it’s not a router problem, there isn’t a problem with your power cord, it’s because most networks use a “range” of IP addresses and for security purposes, it sort of “cycles” the various devices’ IP addresses to decrease the chance of an attack. A printer is no threat but the “network” doesn’t possess human intelligence so it doesn’t know this. Below are my step by step instructions on how to basically make your printer hold its IP address (static IP) instead of changing back and forth through a cycle therefore dropping your printer off the network or disconnecting.
Funny, if you are someone who has had items in your print cue, they won’t print, and you turn your printer off and then back on and suddenly your documents print…well, join my club. The reason this works is because when you first turn on the printer, it starts with the same IP address before it cycles. If you are someone who sits there for a while and suddenly your documents print without you changing anything…this is because through the IP cycle change, it hits your printers IP address and the network will allow it to print. Not very funny, I know. It took me forever to figure out why my printer would print sometimes but not all the time. Since I figured this out, I can SCAN, PRINT and use all of the features of my installed HP software such as HP Solution Center, Photosmart Essentials.
On your printer, go to menu/setup/network and press OK. Inside the network menu, print a "network configuration page" so you can see the IP address and other settings for your printer.
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A trick I often use with printers in DHCP networks:
In Printers and Faxes right click on the printer and select “properties”. Click add a new port. Choose standard TCP/IP port configured to the printer host name. Read the hostname from the printer's network configuration sheet.
Using my method means that you always connect to the printer even if its IP changes (which may happen with dynamic configuration). This does not jeopardize your network security. It just tells your printer to stay put and stop traveling the IP address highway. :-)
This question was solved.
View Solution.

The DHCP range is the range of IP addresses the router hands out automatically as devices join the network. The DHCP range is determined by the router and each brand has a range set at the factory (that can be changed by you).
Your D-link's DHCP default range is 192.168.0.100 to 192.168.0.199. So, outside the DHCP range is .2 to .99 and .200 to .254.
Attached is a handy cheat sheet.
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Say thanks by clicking "Kudos" "thumbs up" in the post that helped you.
I am employed by HP
Attachments:
Router Facts.pdf ‏25 KB

My 1st generation Time Capsule/2007 keeps shutting off and disconnecting from internet? What could be the problem? How long do the Time Capsules usually last?

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That it is still working is miraclous.. most have died.. lots started flaking out at 18months to 2years..
See deadtimecapsule.org
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Java WebStart broken under OS-X
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Running OS-X 10.8 or 10.9 with internet connected.
Launch a WebStart application (e.g.. from http://www.dsuk.biz/Downloads/SmartType/SmartType2.0.19/APPLICATION.JNLP)
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at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doGetRequestEX(Unknown Source)
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at com.sun.deploy.cache.ResourceProviderImpl.isUpdateAvailable(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)
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at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
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I have reproduced with Java build 1.8.0-b132 and 1.7.0_51
Java Web Start 11.0.2.132
Using JRE version 1.8.0-b132 Java HotSpot(TM) 64-Bit Server VM
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RANT/QUESTION
WebStart over the last two years has given me no end of headaches with deployed applications mysteriously breaking when either Oracle or Apple have made changes. So far WebStart just has not been a reliable and robust means of deployment.
Is WebStart to be taken seriously as a deployment vehicle for a commercial application or should I be looking at other solutions?
Also: How do I report bug to Oracle? Do you have to pay for support in order to report bugs?

Java WebStart broken under OS-X
Our Java WebStart application fails to re-launch when disconnected from the internet.
Instructions:
Running OS-X 10.8 or 10.9 with internet connected.
Launch a WebStart application (e.g.. from http://www.dsuk.biz/Downloads/SmartType/SmartType2.0.19/APPLICATION.JNLP)
Disconnect from internet.
Relaunch the application either with the downloaded JNLP file or the installed desktop shortcut.
I get "Unable to launch application" error with following exception:
java.net.UnknownHostException: www.dsuk.biz
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at java.net.Socket.connect(Socket.java:538)
at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
at sun.net.www.http.HttpClient.New(HttpClient.java:308)
at sun.net.www.http.HttpClient.New(HttpClient.java:326)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1167)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1103)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:997)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:931)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1511)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1439)
at com.sun.deploy.net.HttpUtils.followRedirects(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
at com.sun.deploy.net.BasicHttpRequest.doGetRequestEX(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.checkUpdateAvailable(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.isUpdateAvailable(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)
at com.sun.deploy.cache.ResourceProviderImpl.getResource(Unknown Source)
at com.sun.javaws.Launcher.updateFinalLaunchDesc(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
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I have reproduced with Java build 1.8.0-b132 and 1.7.0_51
Java Web Start 11.0.2.132
Using JRE version 1.8.0-b132 Java HotSpot(TM) 64-Bit Server VM
Re launching the application under Windows 7 when disconnected from the internet seems to work fine (tested in virtual Windows 7 64 bit VM under Parallels). It used to work fine on OS-X!
RANT/QUESTION
WebStart over the last two years has given me no end of headaches with deployed applications mysteriously breaking when either Oracle or Apple have made changes. So far WebStart just has not been a reliable and robust means of deployment.
Is WebStart to be taken seriously as a deployment vehicle for a commercial application or should I be looking at other solutions?
Also: How do I report bug to Oracle? Do you have to pay for support in order to report bugs?

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Try the following steps:
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Hi all.
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:. HUGONNE .: Please mark as answer if the post helps. Coding tips - http://hugonne.blogspot.com/

Hi Hugonne,
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We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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Okay I solved the problem. For anyone who runs across this issue in the future, here is the solution:
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Step 2) Type in "Mount -uw /"
Step 3) Type in "vi /Library/Preferences/SystemConfiguration/preferences.plist"
Step 4) Scroll down until you find this part:
<key>Interface</key>
<dict>
        <key>en1</key>
        <dict>
                <key>AirPort</key>
                <dict>
                        <key>JoinModeFallback</key>
                        <array>
                                <string>DoNothing</string>
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<key>PowerEnabled</key>
<false/>
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Step 6: Hit Ctrl + X, hit Y for Yes, press enter.
Step 7: RESTART AND YOU HAVE YOUR COMPUTER BACK!!
I panicked by the way because as someone said earlier, it's nearly impossible to fix:
You cannot fix this problem with Safe Boot, Repair Permissions, Repair Disk, re-install Mavericks, restore from Time Machine backup, reset the SMC, reset PRAM, or boot into single-user mode. Thus far, the only solution is to boot from a (homemade) Install OS X Mavericks USB, erase the hard drive, perform a clean Mavericks install, re-install your applications, and manually restore your data.
Anyway I'm thankful for Ira Wolf 81 for figuring out, he deserves all the credit for this, I merely repeated his steps and found out he was right. Cheers.

Safari 4.0.3 constantly "disconnecting" from internet

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