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From "Craig A. James" <cja...@emolecules.com>
Subject Re: [users@httpd] Virtual Servers Help
Date Thu, 16 Dec 2010 23:13:06 GMT
On 12/16/10 12:18 PM, Afsar Mohiuddin wrote:
> I created a personal log checking access every hour. However, there is no pattern. Firewalls
have same settings for other machines too but those machines are stand alones and have no
virtual servers. CNAME are correct. Access log has GETs are getting 200s. Everything looks
normal.
>
> I get no response as if the server (dns) doesn't exist.  I can't ping or tracert as NetworkAdmin
disabled both. I have a strong feeling that it is firewalls but our NetAdmin thinks otherwise.
-- Thanks.
If Apache has nothing in the error log and nothing in the access log, and it works sometimes
but not other times, then it's not Apache.  There's something wrong with your network, firewall
or DNS.

If your network administrator has disabled ping and traceroute, then he's a bonehead.  How
can you adminster a network with the primary diagnostic tool disabled?  Some admins think
(incorrectly) that disabling ping somehow makes the network more secure.  They need to go
back to school.

But that's a topic for a different forum...

Craig
>
>
> > Date: Thu, 16 Dec 2010 11:44:44 -0800
> > From: cjames@emolecules.com
> > To: users@httpd.apache.org
> > Subject: Re: [users@httpd] Virtual Servers Help
> >
> > On 12/16/10 10:34 AM, Afsar Mohiuddin wrote:
> > > I am using Apche 2.2.0. I have 4 virtual servers running on it.
> > > This server is in DMZ. All servers are accessible from inside the
> > > firewalls 24x7 but from outside, sometimes it on and sometimes it
> > > is off. I couldn't figure this out. There are no errors in
> > > error.log. I appreciate your help.
> >
> > It may be your firewall, not Apache. It may be configured to block some traffic
certain times of day.
> >
> > You should provide more details. When you say "sometimes it on and sometimes it
is off," what do you mean? Do you get no response at all, as though the server doesn't exist?
Do you get an immediate "refused connection" message? What exactly is happening?
> >
> > You checked the error log, but what about the access log? Maybe the traffic is getting
in through your firewall, but not making it back out to the clients.
> >
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