The objective of the tutorial is to show you the tools and methods for
taking control of your network traffic - keeping some of it safely
inside or outside your network, directing traffic to specific hosts or
services, flexible resource allocation and protection against
cracking, DOSing and spamming.
Topics included:
- Background and history
- Packet filter? Firewall? Demystifying some common terms.
- NAT - why NAT was needed, how it works
- PF today - features
- BSD vs Linux - Configuration (for the BSD-curious Linuxer)
- Basic setup on OpenBSD, FreeBSD and NetBSD
- Exploring the basics of rule sets
- Lists and macros and why they are good for you
- A few information gathering techniques
- Simple gateway with NAT - a common setup explained
- Handling that sad old FTP thing
- Making your firewall troubleshooting friendly
- Hygiene: block-policy, scrub and antispoof
- Adapting to changing needs, easily
- The practical sides of logging
- Keeping an eye on things with pftop
- Invisible gateway - bridge (you can filter even if you're invisible)
- Directing traffic with altq
- CARP and pfsync: redundancy and failover - a taste of what is possible
- Wireless networks and how to stop worrying about them
- Giving bruteforcers and spammers a hard time - stopping stupidity at $ext_if, greylisting and tarpitting
Topics not covered:
- Getting BSD to run on your hardware
- The intricacies of Microsoft networking
- Social engineering
Who should attend:
Seasoned and aspiring network administrators looking for ways to make
their environment more efficient and secure. Basic to intermediate
familiarity with TCP/IP and unixes required.
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Peter N. M. Hansteen (born 1963) is Senior Consultant at
Datadokumentasjon A/S in Bergen, Norway. A freenix user since the mid
1990s, he tends to networks in between documentation related
tasks. Advocates freenixes via the local BLUG and national NUUG user
groups, where he is a member of the core group and board member
respectively. A member of the original RFC1149 implementation team.
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