IMac Connects to Internet, but not File Server

Got one iMac (Core 2 Duo, OS X 10.5.8) that has a network issue. It can always connect to the internet, but sometimes it stops seeing a file server on the network (Tiger server). The server connection will drop out on this computer, but not on any of the other computers on the network. Things I've tried that don't work:
- restarting computer
- re-seating ethernet cable
- trying new ethernet cable
- zapping PRAM on computer
The connection to the server just comes and goes randomly, but only on this computer. Suggestions? Thanks!

Same here with an iMac 27" connecting to a windows server.

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Airport express connects to internet, but not print server

hello all. i hope someone can help me with this. 2 days ago, my wife was able to print using her ibook/airport expess setup. today, the network diagnostics has this message: "network diagnostics was able to connect to the internet but not to the server EPSON Stylus CX3800.pdldatastream.tcp.local. this could be caused by problems with the server, or an internet problem between this computer and the server." she says this happened when she turned it on. what could be causing this? any and all help welcome. mcrat

You can reset the AirPort Express (AX) following the directions in Resetting an AirPort Base Station or Time Capsule FAQ.
Then you can use AirPort Utility on your computer to configure the AX.

Hi i use the hp lap in connecting for internet but not open the bro

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i have some problam in my laptop in connecting for internet but not open for broswer and not update for software tell the solution

Hi @jerry3 ,
Thank you for visiting the HP Support Forums and Welcome. I have looked into your issue about your HP Notebook and not getting to the Internet. First try just to reset the router. Unplug from the power wait a few moments and plug back in.
Can get to safe mode with command prompt? F11 upon startup choose safe mode with Networking.
Can you get to the Internet in safe mode?
Please note remove any and all USB devices, and remove memory cards from the card reader slot. Disconnect all non-essential devices.
You can do a system restore. System restore will help if something automatically updated and did not go well on the Notebook.
I would be happy to assist if needed. How Do I Find My Model Number or Product Number?
Please let me know.
Thanks.
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

Is it possible to connect an iMac to the internet but not to the network?

Hello,
I volunteered to purchase an iMac for our company. This huge company maintains a huge windows-only network environment and IT does not support any macs (nor do they want to have them on the network).
Hence, since we really need this machine to be a mac and not a PC I had to promise to set it up as a stand-alone machine and to get anti-virus protection (as users will be coming in with their jump drives etc). At least for the latter reason (regular updates of virus definitions must be possible) we'd like to have it connected to the internet.
How would I escape the dilemma that as soon as I'd hook it up via ethernet, it would of course get internet but at the same time would see all other machines on the network? (it will sure do so as I had tried it out with some other machine running on the same OS)
Is there a way to configure Snow Leopard to allow for internet but not network access?
Does it make sense at all (for security reasons that is)?
thank you very much,
HD

Is there a way to configure Snow Leopard to allow for internet but not network access?
Well, 'internet' is 'network access' so at one level your question makes no sense.
If, on the other hand, what you want to do is segregate your Mac from the other machines then that's a different issue. There are numerous ways of doing that, but most would involve some level of interaction with the network administrators. Given their ana^H^H^H attitude towards Macs that may be an issue.
The best way would be to setup a separate VLAN for the Mac. This will create a separate logical network within the company network with only this Mac and the network router in it. No PC would see the Mac, and the Mac wouldn't be scarred by seeing all those PCs. This cannot be done without buy-in from the network admins, though.
A step down from that would be to use one PC in the network as a gateway to the rest of the network. The Mac would talk to this PC, and the PC would pass the data out to the rest of the network. This would require admin rights on the PC, though, which you may or may not have (I've seen a lot of corporate networks… :: shudder ::)
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My advice: Buy a dozen Krispy Kremes for the network guys and sweet talk them into building you a VLAN.

MacBook can connect to Internet, but not iMac

Using two Airport Expresses as a WDS network. Had to reset network. Now Network is back up. MacBook can see it just fine and connect to the internet. iMac see's it, but can't connect to internet. I also opened up Airport Utility on iMac and it can't see either airport express...
Any idea's?

Also, in network preferences, it shows Airport "Not Connected". But I can see my MacBook on the network.

Connects to internet but not local network

My AX worked fine for the past year. While traveling I disconnected the AX and set the wireless mode in Airport Admin Utility to 'Wireless disabled' and then connected an iMac by ethernet wire for our housesitter. All worked well. On my return I plugged in the AX and reset the Wireless Mode to 'Create a Wireless Network (home router)'. All appeared to work well for the past week. Until today.... when I tried to print wirelessly to a printer connected to my server in the office outside our home. The MacBook Pro was unable to find the printer or the server. It was formerly able to this with no problem.
The MacBook Pro can connect to the internet by the AX but not to my local network.
When I choose 'connect to server' from the Go menu I'm unable to locate the server. I determined that if I enter the local address in the 'server address' window I am able to connect but remain unable to print. My former protocol was to choose the 'browse' button and choose from a list of possible computers (their are a number of Macs possibly on the network).
If I take the MacBook Pro across the driveway to the office and plug into my network the computer finds the server and the printer with no problem.
I've done a hard-reset twice - to no avail. And attempted a factory default re-set 3x but don't believe it worked since the green light didn't flash 4x as expected - it came on briefly and then turned amber while it re-started, but when I used Airport Set up Assistant all my former settings were there and the same password I had entered so I don't believe it reset to factory defaults.
Yow!
I'll really appreciate any assistance.
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Thank you for sharing your experience. I am sure linksys will take care of bug(if any) you mentioned.

Mac Pro will connect to internet but not network with other systems

I have an iMac in my studio reception and a Mac pro and Macbook in my office. All three systems can connect to the internet but the Mac Pro has stopped networking with the iMac. However the iMac can network with the Pro. I have an ethernet cable connection to the Pro (no wi fi card) and I have a wireless router on the iMac which has enabled me to connect the Pro to other systems through wi fi. I also have a PC laptop and the Pro can connect to it via wi fi. Everything was networking properly several weeks ago and as far as I am aware I have not changed any settings. Does anyone have any suggestions on how to resolve this annoying little problem.

Hello there, WoodenToy.
The following Knowledge Base article offers extensive troubleshooting steps for troubleshooting your issue:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
Although the entire article is a great resource you may want to focus on the section entitled: "Symptom: My Mac does not connect to the Internet".
Thanks for reaching out to Apple Support Communities.
Cheers,
Pedro.

PC can connect to internet but not time capsule

We are having no trouble getting onto our internet or accessing the time capsule with our Mac. However, the PC we have can get onto the internet, but is unable to access the time capsule. We need to be able to backup information from both of our computers.
Please help us!

Did you install the Airport utility onto windows? If not do so.. it should include bonjour which helps greatly. Make sure it does.
TC and wireless names may prevent access to resources.. are your names Apple style with that wonderful apostrophe.. illegal in the windows world?? Spaces in names also not legal.
Change all names to SMB type.. short .. no spaces.. straight alphanumeric.
Do you have permissions issues.. ??
Have you opened file sharing and turned on the guest account.. read and write access.
Do you have the right workgroup..?
Please put in WORKGROUP.. assuming that is the workgroup.
If you still have issues.. are you using homegroup in windows.. well stop it.
If you still have issues .. are you connecting correctly using proper URL in windows explorer, ie \\TCname or \\TCIPaddress (obviously replacing with actual name or actual IP)
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I bought my first mac a couple of months ago with an imac 21.5 i5. I love the os and im glad i made the swithc BUT, it was slightly slower than my very cheap laptop on the internet and slower than all other computers in my house and iphone at oading web pages, it often struggled to load a page, said unable to load ect but then would work fine for the past 2 days it has connected to the internet but will NOT load a page, or it starts to then stops, then wont reload, it drops wifi then picks it back up. all other computers such as the one im typing from work fine.
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Hi, this has worked for a few...
Though all of these steps may or may not be needed, I'm including them all.
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.5, 10.6, 10.7 & 10.8…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
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.
If using Wifi/Airport...
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6/10.7/10.8, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
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AE ppoe mode in AE only allows macbook pro and iMac to connect to internet but not ipad

I just upgraded to 20MB DSL line and got a new Qwest Q1000 modem connected to an A Extreme.
Since Qwest now has PPPoE, I set the Q1000 modem to bridge mode and turned off Wifi.
Then I Set the AEx router to ppoe mode, entered my username and password from Qwest and all is well with all lights green.
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Does any one know why some devices connect to the internet while others are not able to...
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Thanks for the reply. Your suggestion did not work. Apparently there is an issue with DNS addresses.
The Airport Extreme in pppoe mode sets the router and DNS addresses to be the same 10.0.1.1. Some devices (like my macbook pro and iMac) ignore this DNS value or use a different (unknown) and then they connect to the internet perfectly. But the devices (ipads and ipods) aquire and set both values (Router and DNS) to be the same, (10.0.1.1 and 10,0.1.1) wont connect to the internet until I manually changed the DNS address in the DNS field.
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Slow opening files when connected to internet but not domain

One of our Windows 8.1 Enterprise laptops is used by a user with local admin rights. The problem the user faces is that when on a WiFi connection that isn't on the Domain, it behaves very slowly. As if trying to contact some domain server. As soon as the
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Hi,
According to your description, this problem seems like caused by WIFI connection. You can try to reinstall Wireless Card driver for test to fix this problem.
If no use, when this problem occurs, open Task Manager to check which process is occupying a plenty of CPU or RAM resource. Then end the process for test.
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

MacBook Air loses connection to internet but not LAN

Hi, I am using a MacBook Air 11" (mid-2012) running OS X Mavericks (10.9.3). I'm connecting to my home LAN via WiFi connection to a TP-Link 300M Wireless router that is setup as a switch (per instructions here http://www.tp-link.com/en/article/?faqid=417), which in turn is connected via wire (ethernet-over-power) to a Technicolor cable modem/router provided by my ISP (UPC in the Netherlands; I can look up the model number of the router if needed, but it's two floors down right now and doesn't strike me that this is the cause of the problem).
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My test to see where the breakdown is occurring is to have four terminal windows up and running ping processes:
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3) ping to 192.168.0.13, which is a Synology NAS attached via ethernet cable to my main cable modem/router - this always stays live, with essentially no lost packets.
4) a login to the Synology NAS, where I am also running a continual ping to 74.125.136.94, and this external ping does NOT fail when the one from my MacBook Air does, it stays live with essentially no lost packets.
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Thanks
John

> 1. If the MBA is connected to the
> a. the Technicolor SSIDs, is the behavior the same (poziom-k testing shows that a second AP causes problems).
No. If connected to WiFI served by Technicolor, the problem does not occur (even if the other AP is connected to the network).
> b. can the Technicolor be replaced easily by an Airport Express/Extreme, to repeat this test?
Unfortunately, Technicolor in router mode is required by my ISP.
> 2. Instead of WiFi, if the MBA is cabled to the secondary AP, is the behavior the same?
Yes.
> 3. Has Wireless RF interference been ruled out for dropped connections?
Yes. A Windows machine and several iOS mobile devices work flawlesly for me.
> 4. If the MBA has a wired connection to the Technicolor, does the problem still exist?
No. The problem occurs only if connected through additional AP.
> 5. Have packets been captured at each interesting point in the topology to see where are packets drops occurring? netstat -s is probably worth looking at > such points. Wireshark (or similar tools) can help.
Not yet. I will not have a chance to do it for the next few days though :/

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I am trying to set up my classroom to where the Internet is only accessible through an Internet User account. I have set up the Internet user and eliminated access to the Internet applications in the Student account. Here are the loopholes when logged in as Student: Using Dashboard weather, a student can click on the city and it will open Safari. In Microsoft Word, a student can open a browser just by typing an address or from the Help menu. If I go into the Account preferences and turn off "Allow supporting programs" it takes care of the student being able to get to the Internet through a back door. BUT it also does not allow connection to a server. When trying to connect to a server, it gives the message "The operation cannot be completed because one or more required items cannot be found (Error code -35)." Does anyone know how I might go about solving this problem?

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sudo ipfw add 120 deny ip from any to any uid shortname
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IMac Connects to Internet, but not File Server

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