new stamtisch location Re: [nylug-announce] TOMORROW! NY Linux Users Grp. January Meeting 1/15 Mordy Ovits: Two On Linux Security

Jim Gleason jgleason at
Tue Jan 14 10:31:59 EST 2003

Just want to make everyone aware that The Old Stand is now closed and 
we will gather after the meeting (around 8:15pm or so) for Stammtisch 
at The Pig 'n' Whistle next door -  922 3rd Ave. between 55/56 Streets.

Friendly reminder to all who wish to volunteer in NYLUG's booth next week 
at Linux World Expo. All volunteers will receive Linux shirts and Prentice 
Hall books from the new Open Source Series.

Please sign up here:

- Jim 

IBM Linux Cluster Sales, Wall Street
President, New York Linux Users Group
phone: 347-200-6460
email: jim at, jgleason at

On 14 Jan 2003, Jim Gleason wrote:

> Date: 14 Jan 2003 14:45:00 -0000
> From: Jim Gleason <jgleason at>
> Reply-To: nylug-announce at
> To: NYLUG Announcements <nylug-announce at>
> Subject: [nylug-announce] TOMORROW! NY Linux Users Grp. January Meeting
>     1/15 Mordy Ovits: Two On Linux Security
>                  The New York Linux Users Group presents
>                               Mordy Ovits
>                            - Linux Security -
>           Kernel Packet Filtering and Pluggable Authentication
> January 15, 2003
> Wednesday
> 6:30pm-8:00pm
> IBM Headquarters Building
> 590 Madison Avenue at 57th Street
> 9th Floor, home to the IBM Linux Center of Competency
>                         ** RSVP Instructions**
> Unless you have already rsvp'ed for a prior meeting, everyone
> should RSVP to attend.
> Check in with photo ID at the lobby for badge and room number.
> Linux Security:
>     We all know Linux's security reputation; it's a matter of pride
>     in our community.  We all know that Linux can be hardened to a 
>     high degree.  We may even know what tools are invoked to bring
>     about this hardening.
>     But do you understand how they work, their internals?  Mordy will
>     cover the internals of two Linux security features, both of which
>     remain poorly understood. 
>     Therefore, this January 15 NYLUG meeting is going to be more
>     technical than usual. 
> Kernel Packet Filtering:
>     The first topic will be the Linux kernel's packet mangling and
>     filtering capabilities.
>     Linux has an incredibly sophisticated TCP/IP stack.  Capable of
>     exceptional perfomance, it also offers unmatched flexibility.
>     It enables you to do nearly any network operation you can 
>     conceive of, and then some.  It gets this power from its internal
>     architecture, comprised of softnet and netfilter.
>     Mordy will go over how the kernel's networking works, where
>     netfilter fits in, how iptables leverages this, and what it can be
>     used for.  This will *not* be an iptables HOWTO. A solid knowledge 
>     of TCP/IP is a prerequisite to this portion of the talk.
> Pluggable Authentication:
>     The second topic will be Linux's implemenation of Pluggable
>     Authentication Modules (PAM).
>     PAM, invented by Sun Microsystems, allows for framework-independent
>     system authentication.  Linux, like all modern Unixes, uses PAM
>     for nearly all authentication, allowing for tremendous flexibility.
>     You can use PAM to authenticate against a RADIUS server or a
>     Windows Domain, or to prevent people from choosing bad passwords.
>     Mordy will be going over the PAM architecture and origins.  He will
>     discuss how programs interact with PAM, and how to configure it.
>     A basic knowledge of the various authentication models and schemes
>     will be helpful, but is not required.
> For more information, visit:
> About Mordy Ovits:
>     Mordy spent three years as a cryptographic engineer, before moving
>     into security consulting with Internet Security Systems.  He is
>     currently employed at a major financial firm as a Network and
>     Information Security Engineer.
> Free Stuff!
>     Swag of undetermined value and quantity may be distributed on a
>     first-come, first-served basis. Arrive early for the best selection
> Keysignings
>     Immediately after the presentation and continuing at the Pig 'n'
>     Whistle, we will be gathering for a keysigning. So for those who
>     have keys already, please remember to bring hard-copy printouts of
>     your 40-character key fingerprint. If you haven't created a key yet,
>     our howto docs are posted here:
> Stammtisch
>     And then after the meeting... Join us around 8:15pm or so at the
>     Pig 'n' Whistle, 922 3rd Ave. between 55th & 56th Streets. 
>     Next to the Old Stand (closed).                                           
> Please see our home page at for the HTMLized
> version of this announcement, our archives, and a lot of other
> good stuff.
> Monthly Reminder!
>     Please read the NYLUG-Talk Posting Guidelines at:
> ________________________________________________________________________
> January 2003 - The New York Linux Users Group,
> Special Thanks to Mordy for preparing the announcement!
> _______________________________________________
> nylug-announce mailing list
> nylug-announce at

IBM Linux Cluster Sales, Wall Street
President, New York Linux Users Group
phone: 347-200-6460
email: jim at, jgleason at

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