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benrst Level 1 Level 1 (0 points)

I have an iMac G5 desktop. I was using a primitive dial up internet connection. It was working for a long time, maybe a year or more, but one day it stopped working. The problem does not appear to be with the internet provider. The number dials and connects but the computer won't do anything more, i.e. it won't connect to any internet pages. The only error message is "server not found" or similar, but I do notice that the computer is trying to connect initially to Yahoo. I am not the original owner of the computer and I assume that Yahoo is the default set up. I don't know if the fact that it is trying to connect to Yahoo matters. I would like to mention that I have gotten "server not found" error messages before on a PC with DSL internet connection. Whenever that happened, I was told to disconnect and reconnect the DSL modem and/or router. This has always solved the problem, but there is nothing to dis/reconnect on my Apple. Thanks.


iMac, Mac OS X (10.5.3)
  • BDAqua Level 10 Level 10 (120,375 points)

    Hello,

     

    Open System Preferences>Network>Configure>Proxies Tab, make sure none are set, like for HTTP & HTTPS to use at Home, if you use it at 2 locations, just make a New Location for home.

     

     

    10.5/10.6 instructions, System Preferences>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

     

     

    Make a New Location, Using network locations in Mac OS X ...

     

    http://docs.info.apple.com/article.html?artnum=106653

     

     

    The Interface that connects to the Internet, needs to be drug to the top of System Preferences>Network>Show:>Network Port Configurations and checked ON.

     

    10.5.x/10.6.x/10.7.x instructions...

     

    System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

     

    The interface that connects to the Internet should be dragged to the top of the list.

     

    Click on the DNS tab and enter these numbers...

     

    208.67.222.222

    208.67.220.220

     

    DNS Servers are a bit like Phone books where you look up a name and it gives you the phone number, in our case, you put in apple.com and it comes back with 17.149.160.49 behind the scenes.  

     

    These Servers have been patched to guard against DNS poisoning, and are faster/more reliable than most ISP's DNS Servers.

  • benrst Level 1 Level 1 (0 points)

    Thanks for your reply. I tried as best I could to follow your instructions. I say tried because what came up did not correspond exactly. In any case, it did not help. If you want me to scan some of the pages that come up so you can see what they say, let me know. Otherwise, I will try to describe below what happened:

     

    Under Configure Proxies, it says "Using a PAC file". Underneath that it says PAC file URL and it has a box where something could be filled in but there is nothing in the box and I wouldn't know what to write there.

     

    When I went into DNS, I added the new numbers you suggested but the computer still seems to revert to the default numbers. There is also a section "Search Domains". Should I add something there?

     

    I tried in the past to use the built in Network Diagnostics, but it reaches an impasse and tells me it cannot solve the problem. There has been no change. I just wanted to mention what it does say: Modem, Modem Settings, Network Settings, and ISP are all green lighted. Internet and Server are yellow (before diagnostics) or red (after diagnostics).

     

     

    Does it matter what "Location" says under Network? It has filled in something there. I didn't specify it myself.

     

    I do notice that other people have posted on Apple or other forums with this same problem, but I am not clear what is the answer that worked for them if there was one. Any further suggestions?

  • BDAqua Level 10 Level 10 (120,375 points)

    Under Configure Proxies, it says "Using a PAC file". Underneath that it says PAC file URL and it has a box where something could be filled in but there is nothing in the box and I wouldn't know what to write there.

    OK, that's standard & Proxies aren't the problem then.

     

    There is also a section "Search Domains". Should I add something there?

    Normally not needed, but opendns.com if you like.

     

    Does it matter what "Location" says under Network? It has filled in something there. I didn't specify it myself.

    Might be a clue...

     

    Make a New Location, Using network locations in Mac OS X ...

     

    http://support.apple.com/kb/HT2712

     

    Add those DNS numbers there if need be.

     

    If you put these numbers in Safari's URL bar & hit enter, do you get Apple?

     

    17.149.160.49

  • benrst Level 1 Level 1 (0 points)

    Thanks again for your reply. I made a new location. No difference.I entered the numbers you suggested in Safari. When I click on Safari from the dock, Safari begins to load for a few seconds then freezes, so it doesn't respond to any URL numbers. I should have mentioned that I have 3 browsers available on the computer: Firefox, Safari and Opera. None are working due to the problem I describe here. All of them used to work before the problem.

     

    There is something that I notice that may be a possible clue. On System Preferences, when I click on Network, a kind of status screen comes up. At the top it says "Sent" and "Received". When the ISP is connected (it does that much but no more), the "Sent" line gets moving bars so the computer is doing something. But the "Received" line remains dead. Does this tell us anything? Could it have anything to do with the built in communications software? I'm sure this is a malware problem, but it certainly is not clear what has been damaged or how to fix it.

  • BDAqua Level 10 Level 10 (120,375 points)

    Can you try those numbers in a different browser?

     

    Open Network Utility>Ping tab, try to ping...

     

    96.16.53.15

     

    Does that get a response?

  • benrst Level 1 Level 1 (0 points)

    PingResults.jpg

  • BDAqua Level 10 Level 10 (120,375 points)

    Whew, does the computer show a good IP in Network prefs for the interface we're using, like not starting with 169.254 ?

  • benrst Level 1 Level 1 (0 points)

    The IP that is listed is 216.194.21.170.

     

    FYI, the DNS Servers that list automatically (presumably linked to this free dialup ISP (Metconnect) are 216.194.28.33 and 216.194.28.69 in addition to the 2 additional numbers you asked me to add.

     

    If this is a communcations software problem created by some kind of malware, then is it possible (1) to reload the internal software that came with the computer or (2) try loading some other software especially something I can download for free in case it doesn't work I won't be out the cost? Are there any diagnostics I can try besides that built into the computer which I already mentioned is unable to diagnose the problem? Other suggestions? Thanks.

  • BDAqua Level 10 Level 10 (120,375 points)

    In Network Utility can you, Ping, Traceroute, & Lookup...

     

    216.194.28.33

     

    If you think it's Malware...

     

    ClamXAV, free Virus scanner...

     

    http://www.clamxav.com/

     

    Free Sophos...

     

    http://www.sophos.com/products/enterprise/endpoint/security-and-control/mac/

  • benrst Level 1 Level 1 (0 points)

    Ping2.jpgLookup.jpgTraceroute.jpg

  • BDAqua Level 10 Level 10 (120,375 points)

    Here's he last part of my Traceroute to that IP...

     

    8  ae-32-52.ebr2.Seattle1.Level3.net (4.69.147.182)  59.973 ms  64.427 ms  79.769 ms

    9  ae-2-2.ebr2.Denver1.Level3.net (4.69.132.54)  85.155 ms  109.182 ms  90.040 ms

    10  ae-3-3.ebr1.Chicago2.Level3.net (4.69.132.62)  119.993 ms  118.727 ms  119.946 ms

    11  ae-1-100.ebr2.Chicago2.Level3.net (4.69.132.114)  125.083 ms  114.022 ms  124.961 ms

    12  ae-6-6.ebr2.Washington12.Level3.net (4.69.148.145)  130.918 ms  124.080 ms  130.057 ms

    13  4.69.148.49 (4.69.148.49)  125.206 ms  144.271 ms  144.847 ms

    14  ae-71-71.csw2.NewYork1.Level3.net (4.69.134.70)  129.542 ms ae-61-61.csw1.NewYork1.Level3.net (4.69.134.66)  143.935 ms ae-81-81.csw3.NewYork1.Level3.net (4.69.134.74)  149.275 ms

    15  ae-41-90.car1.NewYork1.Level3.net (4.69.155.195)  134.149 ms ae-31-80.car1.NewYork1.Level3.net (4.69.155.131)  139.261 ms ae-21-70.car1.NewYork1.Level3.net (4.69.155.67)  139.303 ms

    16  METROPOLITA.car1.NewYork1.Level3.net (4.26.32.178)  154.088 ms  134.123 ms  154.802 ms

    17  216-194-46-86.ny.ny.metconnect.net (216.194.46.86)  149.784 ms  148.830 ms  129.679 ms

    18  ns1.metconnect.net (216.194.28.33)  120.172 ms  134.034 ms  125.373 ms

     

    All I can see on yours is that you did make it out to the Internet...

     

    245.31.194.216.in-addr.arpa. 86400 IN PTR 216-194-31-245.ny.ny.metconnect.net.

     

    Is your Dial-up account still active with these people?

  • benrst Level 1 Level 1 (0 points)

    All I got on Traceroute was those asterisks. I think they would have continued indefinitely. I stopped it after 20 lines. I don't see any comments on the Internet that Metconnect is not working. Metconnect is the free metro NYC dial up service. There is no working contact information for them so I can't ask them anything about my problem. I signed up with them and then entered the sign up information on my computer. As I said, it worked for a long time, maybe a year or more, before it stopped working. I think I tried signing up again, but it didn't solve my problem.

  • BDAqua Level 10 Level 10 (120,375 points)

    Hmmmm, in System Preferences>Security>Firewall tab, is Allow all incoming connections checked?

     

    If no check it, if toggle it off & back on but leave that window open while we test again.

  • benrst Level 1 Level 1 (0 points)

    Allow all incoming connections is checked.

     

    Since your last answer, I thought of checking whether my phone line might be the problem or whether the fact that I was using dial up was a problem so I took the computer to another house to try their phone line and their wifi. Same result: server not found. So the problem is definitely in my computer. Any further suggestions?

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