Question

Problems with sfgate.com only on mac, only in the office.

Asked by: MrBlister

We have a number of Mac's in the office that cannot seem to access sfgate.com. It doesnt matter what browser is used it always does the same thing: tries to load the page and hangs at open.ad.yieldmanager.net

None of the PC's in the office have the problem and I can ping and trace open.ad.yieldmanager.net with no problems from both the PC and Macs...

If I take the mac home and hook it to my home network I can access sfgate.com with no problem. For the life of me I cannot figure out what is going on. Anyone have any ideas?

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Asked On
2009-08-19 at 10:34:36ID24665620
Tags

mac website

,

url mac osx 10.5 leopard

,

mac

,

osx

,

url

,

10.5

,

leopard

Topics

Apple Networking

,

Apple Operating Systems

,

Mac OS 10.5 (Leopard)

Participating Experts
2
Points
500
Comments
12

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Answers

 

by: josephfreerPosted on 2009-08-20 at 07:13:25ID: 25142739

Are your mac's on the same network in the office and not a different subnet/ip scheme? It sounds to me something like a firewall blocking that ad server....

Do an IPconfig/all on a pc in your office and note the settings. Then go to system preferences on the mac and see if they match in terms of gateways and DNS etc...

When you are home are you connecting to a different network profile or is it set to automatic?

Did you try another browser or turn off the mac firewall in the office just for testing (i know its wierd because it works at home but try that out...)

 

by: MrBlisterPosted on 2009-08-20 at 09:03:12ID: 25144174

They are all on the same subnet andI've checked the sonicwall again just to make sure there was nothing funky going on there but all is fine. Here's the thing, I let it sit waiting for the open.ad.yieldmanager.net to connect and after about 10 minutes the page popped up.

I'm beginning to suspect it's a routing issue with the ISP, but if thats the case then why can I ping with low latency and have no problems with the traceroute?

I've been running IT shops for almost 15 years and I've never seen anything like this.

 

by: josephfreerPosted on 2009-08-20 at 09:15:35ID: 25144306

What about trying to go directly to links to subpages on sfgate.com - like http://www.sfgate.com/living (im wondering if its something on the homepage) and see how that loads

I'm trying from my vista machine (with 35mb fiber) and the homepage loads like crap.

You can ping, but just because it finds the host doesnt mean the browser or OS will render that data.

This is VERY odd indeed.

 

by: MrBlisterPosted on 2009-08-20 at 09:24:17ID: 25144390

It's the same thing: hanging on open.ad.yieldmanager.net  I suspect if I let it sit here long enough it will eventually load.

 

by: josephfreerPosted on 2009-08-20 at 09:35:11ID: 25144497

can you add a host entry or dns entry for the open.ad.yieldmanager.net / 76.13234.32

http://support.apple.com/kb/TA27291

 

by: MrBlisterPosted on 2009-08-20 at 09:37:08ID: 25144527

Already tried that yesterday, both a host entry and a DNS forwarder... no dice. It seems like it has no problem resolving, it just takes 10 minutes to connect!

 

by: josephfreerPosted on 2009-08-20 at 09:38:41ID: 25144540

too wierd. and for s-and-g an alternate (firefox) browser doesnt load any better...?

 

by: MrBlisterPosted on 2009-08-20 at 09:53:38ID: 25144706

I've tried Safari and Firefox both with no luck, however I just tried downloading and running opera and it seems that opera can pul the page up in about 30 seconds or so... not great but a far cry better than 10 minutes.

 

by: josephfreerPosted on 2009-08-20 at 10:07:46ID: 25144827

thats about the time it takes me here in NY with vista and windows 7 over a fibre connection.

I cant explain it, what about in the browser - and unique proxies/connection settings being changed? Firefox could have imported safari's settings when installed, so that isnt a reliable test.... opera is.

 

by: sqlrocksPosted on 2009-09-15 at 13:41:11ID: 25339231

We had the exact same issue at our office and it turned out the the Sonicwall CFS (Content Filtering Service) was interfering with that URL. Now the URL should probably not really have been blocked and we could have taken this up with Sonicwall to get it removed (open.ad.yieldmanager.net domain), however, in our case we didn't need the CFS services on the Sonicwall and so we disabled them and all is working well again!

Hope that helps!

-Phil

 

by: MrBlisterPosted on 2009-09-15 at 13:51:30ID: 25339349

I'll give that a go and see what happens.

 

by: MrBlisterPosted on 2009-09-15 at 13:54:07ID: 31617761

You sir, win at the internet!

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