OSEC

Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email hr@neohapsis.com
 
From: Hartmann, Josef (hartmannsecunet.de)
Date: Wed Apr 11 2001 - 01:52:19 CDT

  • Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of your message to
    majordomoiss.net Contact issforum-owneriss.net for help with any problems!
    ----------------------------------------------------------------------------

    Hi,

    is there already a release date for this new release of RS?

    Cheers,
    Josef

    > -----Original Message-----
    > From: Farley, Tim (ISSAtlanta) [SMTP:TFarleyiss.net]
    > Sent: Wednesday, March 21, 2001 1:07 AM
    > To: 'Rickard Cedergren 2184'; issforumiss.net
    > Cc: Timo Vanska 2138
    > Subject: RE: Filter RealSecure Events?
    >
    >
    > TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of your message
    > to
    > majordomoiss.net Contact issforum-owneriss.net for help with any
    > problems!
    > --------------------------------------------------------------------------
    > --
    >
    > > The problem is this, I have a webserver with java installed on it and
    > > some "Java shell" event triggers all the time when someone is
    > > using it. This event is still of concern if the source ip address is
    > > not from say the internal network.
    >
    > I assume you mean the event named "HTTP_JAVA". You can filter this in 5.x
    > versions of RealSecure using a user defined filter. HTTP_JAVA is one of
    > the
    > few events that looks at text coming FROM the web server. So what you can
    > do is put a filter in place that filters all traffic FROM port 80 only on
    > the IP of the affected web server. This will also turn off HTTP_SHOCKWAVE
    > and HTTP_ACTIVEX events for that server but not much else. All the
    > "attack"
    > type events look at traffic that is going *TO* port 80. so those will
    > still
    > be active on your internal server.
    >
    > In a soon-to-be-released version of RealSecure, there is a new feature
    > that
    > will let you handle stuff like this in a more generic and flexible way on
    > an
    > event-by-event basis.
    >
    > > Another similar problem exists with "IP unknown protocol event" and
    > > OSPF. This event is useless cause i can't filter out anything other
    > than
    > > protocol 1(icmp), 6(tcp) and 17(udp) (OSPF is protocol 89).
    >
    > You don't need to filter out ICMP, TCP, UDP and IGMP on that event, as it
    > automatically ignores them. If you go into your policy file where that
    > event is defined (under "IP" in the tree to the left) and click on the
    > ADVANCED... button, you will see a dialog that (among other things)
    > displays
    > a configurable parameter called IGNORE. This is custom to this event.
    > You
    > can put an entire list of protocol numbers here for this event to ignore,
    > separated by spaces and/or commas. Note there is a problem with current
    > versions of the engine that has been discussed on this list, where it does
    > not appear to take changes to the IGNORE parameter until you stop and
    > restart the engine.
    >
    > Hope that helps.
    >
    > =====================================
    > Tim Farley
    > Senior Researcher
    > Internet Security Systems
    >
    > tfarleyiss.net
    > (404) 236-2600 / Direct Dial (404) 236-2873 / fax (404) 236-2624
    > http://www.iss.net
    >
    > Internet Security Systems - The Power to Protect
    > =====================================
    >
    > > -----Original Message-----
    > > From: Rickard Cedergren 2184 [mailto:rickard.cedergrenteracom.se]
    > > Sent: Tuesday, March 20, 2001 11:34 AM
    > > To: issforumiss.net
    > > Cc: Timo Vänskä 2138
    > > Subject: Filter RealSecure Events?
    > >
    > >
    > >
    > > TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of
    > > your message to
    > > majordomoiss.net Contact issforum-owneriss.net for help
    > > with any problems!
    > > --------------------------------------------------------------
    > > --------------
    > >
    > > Hi, I have read all the pdf files (manuals) and searched the website
    > > www.iss.net for anything on "filtering on events" without any luck.
    > >
    > > I have RealSecure 5.5 and two network sensors deployed.
    > >
    > > The problem is this, I have a webserver with java installed on it and
    > > some "Java shell" event triggers all the time when someone is
    > > using it.
    > > This event is still of concern if the source ip address is
    > > not from say
    > > the internal network.
    > >
    > > I would not like to disable the particular event completely
    > > and a filter
    > > on the source and/or destination ip and/or port would be to ruff.
    > >
    > > Another similar problem exists with "IP unknown protocol event" and
    > > OSPF.
    > > This event is useless cause i can't filter out anything other than
    > > protocol 1(icmp), 6(tcp) and 17(udp) (OSPF is protocol 89).
    > >
    > > Anyone done this?
    > >
    > > I would appreciate any kind of hints or tips regarding filtering on
    > > events.
    > >
    > >
    > >
    > >
    > > Thank You!
    > >
    > > /Rickard Cedergren
    > >
    > >
    >