Installation went great, but now the internet doesn't work

I had the same issue on my laptop, and four imacs. I had not not only create a new location, but then go into the advanced settings and hit renew on the DHCP lease. Then everything worked correctly.

Wanted to chime in to say I had the problem of not being able to start up wireless airport either (wired worked fine); fixed it with the "make a new location" fix .

Message was edited by: bpr2

Hi bpr. Creating a new location is one way to fix it, but the other way is just to delete the manually entered DNS servers from Network prefs because they were probably not working. Most people use the DNS servers provided by DHCP, so adding extra DNS servers often causes problems.

another one with this problem

Mine is over ethernet, not airport

Mine, I can hit websites just fine (firefox or safari) but nothing internal.

If I try to access my internal linux server, either via sftp or ssh, I get a connection timed out. If I try to access my internal windows web server by dns, I get a connection timeout (although the windows web server works when I hit it by IP)

And its just me - in VMWare Fusion on this laptop, I can ssh into the linux server just fine and firefox into the intranet by dns just fine

I tried to ssh from 10.6 after closing VMWare - no good

Tried the create a new location entry in network preferences, no good.

tried deleting ssh_hosts from .ssh - no good

DNS is passed out via our gateway firewall - nothing has changed about this device and all 300 employees who are not mac users are fine (first passing out our internal dns server, then our ISP's servers)

I'm at a loss right now - I need to get to my linux server to make some changes to the site and I'd really would rather not rebuild my laptop - way way way to much stuff on it.

Any other ideas ?

-Mario

Yet another here. I have a MacBook (2,1) and a MacBook Pro (5,1). The Pro is working fine but the older is not.

Some things that I've noticed: when I ping the old machine from the new I don't get responses but if I then disable and reenable Airport on the old machine, it responds to 1 (one) ping ... every time! Once it responds to that ping I can no longer access the internet from it until I cycle Airport again.

Can anyone else replicate this?

I have installed Snow Leopard on my iMac and MacBook Pro, both will loose ethernet internet links after a period of time, sometime five minutes sometimes an hour. I am having to reboot my machines four or five times a day as the only consistent way to recover internet connection is a reboot.

I too had to create on both machines new profiles in System Preferences | Network before I could get any internet connection. This does not appear to be a permanent fix, because I am still suffering lose of internet for no apparent reason while using the machine. Sometimes I can switch to an airport connection and carry on working. Last night when I tried this the machine locked up and a power button reboot was required.

The O2 modem I have will not work and the install software just crashes. Serious problems with network connectivity?

Another update on the behaviour of my machine: It seems that if I turn Airport off and then on again, the internet will work until the first time a socket connection is destroyed/closed. Once this happens, the machine loses connectivity completely. Seems to be a low level TCP/IP issue for me.

This doesn't seem to match the behaviour of other people on here though, so maybe there's more than one problem with networking.

Same here. Tried every solution on these forums to no avail and have had to revert to my Leopard backup just to be able to do some work.

What's the procedure for getting a refund on your Snow Leopard disc as it does not work as advertised?

My Airport Extreme dropped after 2 hours in Snow Leopard but I was having the same issue in Leopard, simply because Airport extreme does not support PPOA. Snow Leopard does not directly support PPOA and I think this might be the issue with a lot of connections.

You might try this:
Disconnect Airport for 30 seconds, then reconnect, go to System Preferences, Network, Airport, Advanced tab, click on TCP/IP, Click on Renew DHCP Lease. This seems to work for WPA2 security in Airport utilities. Try this and let me know if this works for you?

My previous post was only a temporary fix that lasted a few hours before my troubles started all over again.

My new fix is to enable Interference Robustness in the Airport Utility under wireless, then wireless option tab. This has been working for a few hours after repeated sleeps and rebootings. See if this works for you.

hi all,
same here.

just upgraded my new macbook pro 17 to snow leopard and i dont get connections to the internet via safari, mail and firefox anymore.
skype still works. (!?)

i have rebooted my modem (alice modem wlan 1121 from siemens) and typing on my old macbook pro with leopard.

snow leopard seems to crash my modem.

best regards
m

I think this just worked for me!!!! =D

Hello all,

I find solution in my iMac 24" 2,66 GHz to making following setup.

Network -> Advanded -> DNS -> DNS Servers:

Delete all IP and Search Domains data, which is created automatically by OS X installation.

Set my own Internet Service Provider (Elisa, Finland) IP-adresses (193.229.0.40 and 193.229.0.42)
on to DNS Servers field and let Search Domains field empty.

The "wrong" OS X intallation setup default value was 192.168.0.254 and home.gateway,
this is my ADSL modem adress and name.

I hope that this info is helpfull for everyone.

I am very happy now with my IMac and Snow Leopard 🙂

- Kari

the problem does not show up with another modem. checked it with my neighbours "ZyXEL"-modem with an ethernet connection.