Cannot Access specific websites from LAN

Generally when there are problems accessing specific sites like this it's caused by improper MTU settings.

See if you can access the site from the SBS itself. If so, then see my answer in this question for info on MTU: http:Q_21963681.html

Jeff
TechSoEasy

Also, set your DNS forwarders to your local ISP's DNS numbers.

ASKER

Thankyou for all your responses.

I cannot access the site using the ip address, or on the sbs server.
The dns forwarders are set to my local ISP dns

Any other suggestions?

1) The MTU suggestion is a common issue...I'd suggest you check what TechSoEasy said.
2) Also, go to a dos box and type ipconfig /flushdns
3) Make sure your workstations have their DNS set to the server.
4) Override the DNS setting on a workstation and set it's dns to the same addresses that you have in your forwarders in DNS.
5) Make sure that you have the current DNS numbers for your ISP. I"ve seen a couple times where the ISP changes them, or uses different servers...then lets those old DNS server (fade away).....whereby they don't keep updated...

Just a few more ideas.

Roshan Mohammed

Have you got ISA Server installed by any chance, have seen this a lot.

DId you try the MTU settings as I had suggeted?

Jeff
TechSoEasy

*chants* MTU MTU MTU :-)

ASKER

I tried the MTU settings you suggested and restarted the 'Network Connections' service. I am unable to reboot the server at this stage, but so far no change :(.

ISA server is not installed.

Thanks guys for your help.

try those dns ideas that were in my previous msg

ASKER

They're already set like that, pointing to my local ISP DNS

Thanks

2PiFL

Use tracert to see where it's stopping.

C:\tracert name of site that doesn't work here

ASKER

Using tracert, here are the results.

--------------------------------------------------------------------
Tracing route to www.virginblue.com.au [203.35.229.201]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms creativeenergysolutions.local [192.168.1.10]
2 <1 ms <1 ms <1 ms 192.168.200.254
3 * * * Request timed out.
4 * * * Request timed out.

--------------------------------------------------------------------------------------------
It just kept timing out.

Thanks

Would it be possible to connect a laptop directly to the internet connection, bypassing your whole network, and seeing if that works?

ASKER

Not at the moment, probably not, sorry.

What browser are you using? Can you try using opera or mozilla and see if it work?
What exactly do you see when you try to access the page?

ASKER

I managed to setup a computer and connect it directly to the router/modem bypassing the whole network, in fact i completely disconnected everything from the router/modem so only 1 system is connected to it.

It seems that i still cannot access the www.virginblue.com.au website. It seems that when i reboot the router/modem, i can access everything again. We are using a Billion 7402VGP.

Sometimes we also cannot access other websites such as google.com.au and others.

I tried with both Firefox and IE and neitehr work. When we attempt to access the virginblue.com.au site, we receive a timeout error.

Thanks again

ASKER CERTIFIED SOLUTION

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ASKER

Ok.. So how do i go about fixing the MTU issue. We are using a Billion 7402VGP.

Thankyou

Page 46 of the user manual shows where the MTU can be changed.
http://www.billion.com.au/downloads/BiPAC%207402VGL%20series%20User%20Manual.pdf

You should still call your ISP to ask them what you should set it to.

Or just guess and set it to 1492 instead of what I would assume is it's default of 1500.

Jeff
TechSoEasy

ASKER

I changed the MTU on the router after upgrading the firmware. So far everything seems fine, ill keep this question up to date. After a week or to i'll be confident if this fixed it.

Thanks

I'm a bit unsure why you need a week to find out... if the site works now, and it didn't before, then what difference does a week make?

Just curious.

Jeff
TechSoEasy

ASKER

Everthing seems fine, thank you so much guys for all your help, it makes my life so much easier when i have such great support.

One more thing, anyone got suggestions on how i should allocate the 500 points?

thanks

"More than one Expert helped solve my problem. What do I do?"
https://www.experts-exchange.com/help.jsp#hi69

The choice of how any specific comment contributed to your solution is up to you. Remember though, points do not get awarded for "good effort" but rather for "right answer".

Jeff
TechSoEasy