Resume for Linda Bissum
A pdf version can be found here.
My many years as a Linux and Unix System Administrator
and infrastructure designer enable me to identify and
solve issues before they become problems. I recognize
that computer and network implementations are driven by
business requirements, and design systems accordingly. I
prefer strategic solutions to short term fixes when
I am expert in Linux and Unix systems administration
and Linux and Unix infrastructure. I have system
administration experience on a variety of platforms, with
particular emphasis on high availability Linux, Sun
Solaris, and BSD derived systems. My programming
experience extends back over 25 years in a variety of
languages; with a current emphasis on Perl and C. My
Web-related skills include Web server configuration,
HTML, and CGI programming.
I enjoy working with people. I am a good listener, and
believe in sharing information. I place great importance
on mentoring junior system administrators. I like to
read, and continue to hone my skills by reading books on
topics related to my work.
During my career with Linux and Unix System
Administration, I have used, configured and maintained
many different types of Linux and Unix hardware and
software including the following:
Apache BIND/DNS Big Brother
Bud Tools CVS DHCP
FTP IMAP ISS Scanner
LDAP Legato MRTG
MS Project Mod-Perl MySQL
NFS Nagios NIS
OpenSSH OpenSSL PGP
POP Perforce Postfix
RAID rdist RCS
rsync SMTP SNMP
Samba Satan Sendmail
TCP/IP Snort IDS Squid
TCP-wrappers Tripwire UUCP & Usenet
Veritas File System (VxFS) Visio
In recent years, I mostly worked with Linux and
Solaris. However, during my career, I have managed many
other types of operating systems:
AIX DEC-UNIX HP-UX
IRIX Linux (RedHat, Suze & Debian)
Pyramid-OS SCO Unix Solaris 4 through 9
SunOS Unix version 6 through System V rel 4
In recent years, I mostly programmed in Perl. However,
during my career, I have used many other programming
Algol Assembler C
Cobol Expect Lex & Yacc
Lisp PHP Pascal
Perl PL1 SQL
Shell Sed & Awk
n resent years, I have mostly managed iptables and
Netscreen firewalls. However, during my career, I have
managed many other kinds of firewalls:
Checkpoint Cisco PIX FTK & Gauntlet ISS
NetScreen Iptables Raptor Eagle
Auspex Cisco HP DL360 & DL380
Dell 1x50, 2x50 F5 IBM RS 6000
Mips Netscreen Sun Sparc 1 2 5 10 & 20
Network Appliance Pyramid SGI Indigo E250/E450
E3500, E4500, E220R Netra T1
Sun Ultra 1, 2, 5, 10, 60 & 80 A1000, A5000
Exam Scient in Computer Science, University of
Electronic Engineering Degree, Frederiksberg Institute
of Technology, 1972.
Various conferences, starting with LISA II and
progressing through SANS, USENIX, most LISA
Designed, built and managed high availability
Linux and Unix server farms providing Internet
services from remote and local data centers. Designed
and built an expandable and automated server
infrastructure for automated installation,
configuration and management of the servers, using
tools such as Big Brother, FTP, Jumpstart, KickStart,
Perl, rdist, rsync and ssh.
Managed small and large heterogeneous networks of
Linux/RedHat/Debian, Solaris and BSD, that included
other less used platforms, such as HP-UX, DEC-UNIX,
AIX, SCO, etc.
Configured and troubleshoot DNS/Bind,
SMTP/Sendmail/Postfix, NFS/NIS, Firewalls, and NTP in
small and large installations. Automated system
Installed, configured and managed Apache web
servers in small and large installation.
Installed dedicated and Linux & Unix firewalls
and consulted on UNIX/Network security issues.
Built large and small system administration
related utilities in Perl and Shell. Ported open
source programs in Perl and C to new environments.
Maintained a make library providing a systematic
approach to publicly available software packages for
multiple architectures from a single shared source
Acted as manager, mentor teacher and technical
lead for system administration teams.
Published papers at national conferences as well
numerous magazine and journal
articles on topics in system
administration and security, including an ongoing
UNIX system administration question
and answers column in SysAdmin
Participated in national conferences as
program commeettee member and
Founder of Bay-LISA, the San Francisco Bay Area
Large Installation System Administration User Group.
Founding Board Member of USENIX/SAGE Special Interest
Got Linux, Inc, Livermore, California; July 2006 to
Senior System Administration Consultant
High Availability Linux servers.
2Wire, San Jose, California; August 2001 to July
Senior Operations Engineer
Linux servers with Apache, Resin and Postgres, Oracle
& MS-SQL Database.
Designed and built production and internal
corporate server infrastructure on Linux, including
necessary infrastructure for remote high availability
production site, out-of-state fail-over site and
several internal test clusters. All servers are
Successfully completed scheduled and unscheduled
fail-over from primary to secondary production
Designed and implemented all software necessary to
maintain the above sites, including automated code
push, monitoring and remote re-installation of
Wrote complete documentation for above
infrastructure for business partners wanting to
implement similar infrastructure.
Designed and built global load balancer, balancing
traffic between sites.
Trained IT staff in use and maintenance of DNS
(BIND). Was ultimately responsible for internal and
external DNS servers.
Created necessary procedures for the junior IT
staff for the day-to-day support of the Linux and
Wrote Administration, Reference, and Operations
guides for above infrastructure for use at
Taught classes for above infrastructure to system
administrators from third-party sites.
Successfully grew the above infrastructure to
handle an increase of traffic to 1000 times the
Taught the IT staff in topics such as Linux System
Administration, Network Troubleshooting, DNS
maintenance & troubleshooting, and Perl
RightOrder, San Jose, California; June 2000 to April
Senior System Administration
Solaris on i86pc & Sparc, Linux server with
Apache, WebLogic and Oracle Database.
Designed and built internal Corporate Linux &
Unix server infrastructure on Solaris & Linux
with centralized support (NFS, NIS, Sendmail 8.x, DNS
9.x, NTP, Apache, Firewall, etc).
Responsible for Linux & Unix and network
security of Corporate and Production
Created necessary procedures for the junior IT
staff for the day-to-day support of the Linux &
Collaborated with the VP of Production and the
Director of Systems and Technology on budget and
business strategy for the design and implementation
of the Production ASP style Infrastructure.
Designed and managed implementation of a
Sustainable, Scaleable Web Server Infrastructure for
the RightOrder ASP Production with Perl, jumpstart,
ssh, rdist, rsync, cfengine, DNS, Sendmail and Big
Brother, automating system and installation and
configuration including Apache and WebLogic, etc.
Provided ongoing support of the production and
Taught the IT staff in topics such as Network
Troubleshooting, DNS maintenance and troubleshooting,
Sendmail, and Production Infrastructure.
Why Not Creations, Milpitas, California; June 1999 to
System Administration Manager
Solaris, Linux & BSD 4.4 servers with Apache,
NetDynamics and Oracle Database.
Promoted from Senior Unix System Administrator to
System Administration Manager in January 2000,
responsible for the production server
Build Linux & Unix based infrastructures
(Apache, NetDynamics and Oracle) for productions and
development servers (Solaris and Linux) in a 13 rack
Configured Sendmail 8.x and Bind 8.x.
Built a centralized support model for Linux &
Unix servers, simplifying the day-to-day
Ongoing support of the production and development
Teaching 14 2-hour mini courses to the entire IT
staff in topics such as Network Troubleshooting, DNS
maintenance and troubleshooting, Sendmail, and
Auspex Systems, Santa Clara, California; August 1998
to June 1999
Senior Unix System Administrator
Auspex NFS Servers and Sun servers with Clarify on top
of Oracle Database, Veritas Volume Manager.
Promoted to Technical Lead for the Unix server
group in November 1998.
Configured Bind 8 and NIS.
Configured Sendmail for Auspex worldwide and
Auspex postmaster for Santa Clara, United Kingdom and
Responsible for Y2K compliance of Sun Servers and
development of Y2K upgrade strategies and monitoring
software. Built automated patch management software
Supported the Business System Groups servers,
including their Clarify and Oracle development, test
and production servers.
Ongoing education of users, helpdesk and Unix
system administration staff.
Coordinated the Unix group in the three months
Tech Services were without a Manager.
/sys/admin, inc., San Jose, California; October 1987
to August 1998
Independent Unix System Administration
Worked with a large number of clients over an
eleven-year period. The environments were mostly Sun and
BSD 4.x networked environment, but included many other
platforms, such as HP-UX, Pyramid-OS, SCO UNIX, AIX,
Investigated and analyzed problems in the Unix
system administration support structure, and provided
written reports and recommendations to system
administration staff and senior management.
Recommended and documented new and existing
procedures and policies, and wrote software and
documentation for the day-today operations.
Reviewed existing hardware, and provided
recommendations on hardware selection and procedures
for hardware replacement.
Automated system administration tasks across the
network writing tools in Perl and C.
Made necessary changes in the system configuration
to simplify and automate administrative tasks, disk
management, mail configurations, printers, and
administration of system and network configuration
files across all machines.
Designed a commercial firewall, PrivateNet, for
NEC. Reviewed Public Socks Package as a possible
product and Redesigned Socks (SocksPlus) for better
security and easier configuration. Designed proxies
for SMTP, FTP, HTTP and Telnet. Repackaged BSD/OS
(BSD 4.4) for the firewall platform, including
implementing a bootable CD-ROM root file system.
Designed a menu driven configuration program that
simplified configuration of SocksPlus, all proxies,
DNS and Sendmail.
Installed and maintained Firewalls (mainly based
on TIS Firewall Tool Kit, NEC PrivateNet Firewall and
Firewall-1 products) and performed security audit of
firewalls and internal networks.
Designed, configured, and troubleshot e-mail
systems for small and large organizations, using
Sendmail and DNS.
Configured and troubleshot NFS and NIS.
Planned and supervised a move of Unix machines to
computing center on a new campus.
Evaluated, recommended, and installed systems for
automatic site-wide backup (Amanda, Legato and Bud
Wrote White Papers and positioning papers on
various system administration and security