Re: snort not recognizing dns server correctly

2002-05-16 Thread dafr
--- Javier Fernández-Sanguino_Peña <[EMAIL PROTECTED]> wrote:
> On Mon, May 06, 2002 at 04:27:53AM -0700, Jeff wrote:
> > dafr, 2002-May-03 10:52 -0700:
> > > Jeff,
> > > 
> > > I had this problem initially as well when I reconfigured snort,
> until I
> > > restarted the service. Quite obvious in retrospect, but when I
> missed
> > > it initially, I could see others doing the same.
> > > 
> > > There is also a section towards the bottom of the snort.conf file
> that
> > > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually
> activate
> > > the DNS filter.
> > > 
> 
>   Since this is a common issue, why not file a wishlist bug against
> the snort package so that it helps the user do this upon
> installation?
> IIRC it currently does not do it.
> 
>   Javi


Yes, the installation tools might be able to be improved upon, but I'd
rather see more obvious documentation, or just a banner page at install
that says "here are the steps to..." at this point. The wishlist may be
appropriate for accomplishing this, but this request was the first one
that I've seen on this list, so I'm not sure how common the problem
really is.

I have to admit that I didn't go digging too hard for documentation and
went straight to the configuration files and figured it out for myself.

David



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Re: snort not recognizing dns server correctly

2002-05-16 Thread dafr

--- Javier Fernández-Sanguino_Peña <[EMAIL PROTECTED]> wrote:
> On Mon, May 06, 2002 at 04:27:53AM -0700, Jeff wrote:
> > dafr, 2002-May-03 10:52 -0700:
> > > Jeff,
> > > 
> > > I had this problem initially as well when I reconfigured snort,
> until I
> > > restarted the service. Quite obvious in retrospect, but when I
> missed
> > > it initially, I could see others doing the same.
> > > 
> > > There is also a section towards the bottom of the snort.conf file
> that
> > > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually
> activate
> > > the DNS filter.
> > > 
> 
>   Since this is a common issue, why not file a wishlist bug against
> the snort package so that it helps the user do this upon
> installation?
> IIRC it currently does not do it.
> 
>   Javi


Yes, the installation tools might be able to be improved upon, but I'd
rather see more obvious documentation, or just a banner page at install
that says "here are the steps to..." at this point. The wishlist may be
appropriate for accomplishing this, but this request was the first one
that I've seen on this list, so I'm not sure how common the problem
really is.

I have to admit that I didn't go digging too hard for documentation and
went straight to the configuration files and figured it out for myself.

David



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Re: snort not recognizing dns server correctly

2002-05-16 Thread Javier Fernández-Sanguino Peña
On Mon, May 06, 2002 at 04:27:53AM -0700, Jeff wrote:
> dafr, 2002-May-03 10:52 -0700:
> > Jeff,
> > 
> > I had this problem initially as well when I reconfigured snort, until I
> > restarted the service. Quite obvious in retrospect, but when I missed
> > it initially, I could see others doing the same.
> > 
> > There is also a section towards the bottom of the snort.conf file that
> > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> > the DNS filter.
> > 

Since this is a common issue, why not file a wishlist bug against
the snort package so that it helps the user do this upon installation?
IIRC it currently does not do it.

Javi


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Re: snort not recognizing dns server correctly

2002-05-16 Thread Javier Fernández-Sanguino Peña

On Mon, May 06, 2002 at 04:27:53AM -0700, Jeff wrote:
> dafr, 2002-May-03 10:52 -0700:
> > Jeff,
> > 
> > I had this problem initially as well when I reconfigured snort, until I
> > restarted the service. Quite obvious in retrospect, but when I missed
> > it initially, I could see others doing the same.
> > 
> > There is also a section towards the bottom of the snort.conf file that
> > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> > the DNS filter.
> > 

Since this is a common issue, why not file a wishlist bug against
the snort package so that it helps the user do this upon installation?
IIRC it currently does not do it.

Javi


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Re: snort not recognizing dns server correctly [closed]

2002-05-15 Thread Jeff
Jeff, 2002-May-06 04:27 -0700:
> dafr, 2002-May-03 10:52 -0700:
> > Jeff,
> > 
> > I had this problem initially as well when I reconfigured snort, until I
> > restarted the service. Quite obvious in retrospect, but when I missed
> > it initially, I could see others doing the same.
> > 
> > There is also a section towards the bottom of the snort.conf file that
> > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> > the DNS filter.
> > 
> > HTH,
> > David
> 
> David,
> 
> Thanks for the pointer.  I found the section and uncommented it
> and then restarted snort.  I'll be watching my logs and let you
> know what I see.

After a couple of weeks with these settings, no more portscans
are being registered by my dns servers.  Thanks for you help
David.

jc


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Diggin' Debian  Admin and User


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Re: snort not recognizing dns server correctly [closed]

2002-05-15 Thread Jeff

Jeff, 2002-May-06 04:27 -0700:
> dafr, 2002-May-03 10:52 -0700:
> > Jeff,
> > 
> > I had this problem initially as well when I reconfigured snort, until I
> > restarted the service. Quite obvious in retrospect, but when I missed
> > it initially, I could see others doing the same.
> > 
> > There is also a section towards the bottom of the snort.conf file that
> > you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> > the DNS filter.
> > 
> > HTH,
> > David
> 
> David,
> 
> Thanks for the pointer.  I found the section and uncommented it
> and then restarted snort.  I'll be watching my logs and let you
> know what I see.

After a couple of weeks with these settings, no more portscans
are being registered by my dns servers.  Thanks for you help
David.

jc


-- 
Jeff CoppockSystems Engineer
Diggin' Debian  Admin and User


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Re: snort not recognizing dns server correctly

2002-05-06 Thread Jeff
dafr, 2002-May-03 10:52 -0700:
> Jeff,
> 
> I had this problem initially as well when I reconfigured snort, until I
> restarted the service. Quite obvious in retrospect, but when I missed
> it initially, I could see others doing the same.
> 
> There is also a section towards the bottom of the snort.conf file that
> you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> the DNS filter.
> 
> HTH,
> David

David,

Thanks for the pointer.  I found the section and uncommented it
and then restarted snort.  I'll be watching my logs and let you
know what I see.

thanks,
jc


-- 
Jeff CoppockSystems Engineer
Diggin' Debian  Admin and User


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Re: snort not recognizing dns server correctly

2002-05-06 Thread Jeff

dafr, 2002-May-03 10:52 -0700:
> Jeff,
> 
> I had this problem initially as well when I reconfigured snort, until I
> restarted the service. Quite obvious in retrospect, but when I missed
> it initially, I could see others doing the same.
> 
> There is also a section towards the bottom of the snort.conf file that
> you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
> the DNS filter.
> 
> HTH,
> David

David,

Thanks for the pointer.  I found the section and uncommented it
and then restarted snort.  I'll be watching my logs and let you
know what I see.

thanks,
jc


-- 
Jeff CoppockSystems Engineer
Diggin' Debian  Admin and User


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Re: snort not recognizing dns server correctly

2002-05-03 Thread Robert van der Meulen
Hi Jeff,

Quoting Jeff ([EMAIL PROTECTED]):
> The 192... is a local private network and the next 2 addresses
> are dns servers.  Snort is constantly logging activity to the 1st
> dns server as a portscan, and as I understand it, this config
> entry is supposed to eliminate that.  Is this incorrect?

Please email me offlist about this; (debian-security is not the right place,
the package maintainer address (mine) is).
It's also important to know what version(s) of the package(s) you're talking
about.

Greets,
Robert
-- 
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Re: snort not recognizing dns server correctly

2002-05-03 Thread Robert van der Meulen

Hi Jeff,

Quoting Jeff ([EMAIL PROTECTED]):
> The 192... is a local private network and the next 2 addresses
> are dns servers.  Snort is constantly logging activity to the 1st
> dns server as a portscan, and as I understand it, this config
> entry is supposed to eliminate that.  Is this incorrect?

Please email me offlist about this; (debian-security is not the right place,
the package maintainer address (mine) is).
It's also important to know what version(s) of the package(s) you're talking
about.

Greets,
Robert
-- 
( o>  Linux Generation  


Re: snort not recognizing dns server correctly

2002-05-03 Thread dafr
Jeff,

I had this problem initially as well when I reconfigured snort, until I
restarted the service. Quite obvious in retrospect, but when I missed
it initially, I could see others doing the same.

There is also a section towards the bottom of the snort.conf file that
you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
the DNS filter.

HTH,
David

--- Jeff <[EMAIL PROTECTED]> wrote:
> I have the following entry in /etc/snort/snort.conf
> 
> var DNS_SERVERS [192.168.0.0/24,216.148.227.68/32,204.127.202.4/32]
> 
> The 192... is a local private network and the next 2 addresses
> are dns servers.  Snort is constantly logging activity to the 1st
> dns server as a portscan, and as I understand it, this config
> entry is supposed to eliminate that.  Is this incorrect?
> 
> thanks,
> jc
> 
> -- 
> Jeff Coppock  Systems Engineer
> Diggin' DebianAdmin and User


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Re: snort not recognizing dns server correctly

2002-05-03 Thread dafr

Jeff,

I had this problem initially as well when I reconfigured snort, until I
restarted the service. Quite obvious in retrospect, but when I missed
it initially, I could see others doing the same.

There is also a section towards the bottom of the snort.conf file that
you _also_ have to unhash, for DNS_SERVERS, IIRC, to actually activate
the DNS filter.

HTH,
David

--- Jeff <[EMAIL PROTECTED]> wrote:
> I have the following entry in /etc/snort/snort.conf
> 
> var DNS_SERVERS [192.168.0.0/24,216.148.227.68/32,204.127.202.4/32]
> 
> The 192... is a local private network and the next 2 addresses
> are dns servers.  Snort is constantly logging activity to the 1st
> dns server as a portscan, and as I understand it, this config
> entry is supposed to eliminate that.  Is this incorrect?
> 
> thanks,
> jc
> 
> -- 
> Jeff Coppock  Systems Engineer
> Diggin' DebianAdmin and User


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