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adamgx Author

Level 1

10 points

I can ping but not browse -- not a DNS problem

This only happens after I restart my MBP. The problem reliably lasts for several hours, then it clears up.

I can ping anything (using either the URL or the IP address).

However, if I browse or telnet the connection only works 1 out of every 20 or so attempts. When browsing for instance I can click reload reload reload reload .... until ... eventually a page might load (with or without pictures or css).

This started after I upgraded to Snow Leopard.

Can anyone give advice or help me isolate the problem?

MacBookPro5,3, Mac OS X (10.6.2)

Posted on Mar 18, 2010 5:54 PM

21 replies

adamgx Author

Level 1

10 points

Mar 22, 2010 11:27 PM in response to islandgrldotnet

hi islandgrldotnet

Is the problem also intermittent on yours? My browser connects about 1 in 10 reloads (while pings are 100%0.

Cheers, Adam

adamgx Author

Level 1

10 points

Mar 23, 2010 3:17 AM in response to humberaquino

Hi Humber

Thanks for the tips. My problem is intermittent (about 90% problem, 10% not problem!, but intermittent), so I don't think it's a firewall setting.

My firewall output is also: 65535 allow ip from any to any

Thanks for helping though and glad you fixed yours.

Adam

adamgx Author

Level 1

10 points

Mar 23, 2010 5:55 AM in response to adamgx

I'm not sure if this is a symptom or a cause but when I use Netstat to display the state of all current socket connections there are literally about 15,000 lines like:

tcp4 0 0 localhost.57419 localhost.ipulse-ics TIME_WAIT
tcp4 0 0 localhost.57418 localhost.ipulse-ics TIME_WAIT
tcp4 0 0 localhost.57417 localhost.ipulse-ics TIME_WAIT
tcp4 0 0 localhost.57416 localhost.ipulse-ics TIME_WAIT
tcp4 0 0 localhost.57415 localhost.ipulse-ics TIME_WAIT
tcp4 0 0 localhost.57414 localhost.ipulse-ics TIME_WAIT

It seems to be something to do with OpenBase.

Mar 23, 2010 2:36 PM in response to adamgx

Hi Adam,

That's good news. You're near the source of the problem 😉
Could you try 'sudo lsof -n -i TCP' to check the process that is creating too many tcp connections.
After identified it you could try to TERM it (kill PID ) or KILL it (kill -9 PID) to see if the networking situations improves (number of socket connections and network connectivity).

Let us know how everything is going. 😀

Regards,

Humber

adamgx Author

Level 1

10 points

Mar 23, 2010 2:56 PM in response to humberaquino

Hi Humber,

I killed the openbase processes and problem was rectified within a minute or so. I've uninstalled it now and no programs have complained yet, although it must have been installed for a reason. Still, a great relief!

Thanks for your help 🙂

Adam

Note for anyone else with problem: uninstall script was a bit hard to find:
sudo /Library/OpenBase/bin/RemoveOpenBaseScript

Mar 26, 2010 12:36 PM in response to adamgx

Hi Adam,

Glad to know that your problem is solved. 😀

But you're right about OpenBase. It's there for a reason (at least most of the time hehe)
Extracted from Wikipedia ( http://en.wikipedia.org/wiki/OpenBase):
"OpenBase SQL is a relational database server software, originally developed for the OpenStep platform. First released in 1991, OpenBase is available today for several platforms, although the bulk of its users are on Mac OS X. The system supports common access methods via JDBC and C, however it is optimized for use in conjunction with a variety of Macintosh-based development tools like WebObjects, RealBasic and Omnis Studio. It is also used on home computers for sharing features such as Windows file sharing."

Perhaps Windows file sharing won't work as expected :S. Not sure about it.

Best regards!

Humber

I can ping but not browse -- not a DNS problem