Oregon Latvian Community Center

Portland Linux/Unix Group General Meeting Announcement

Who: Mark/Xe1phix
What: Firejail and Linux VPNs
Where: 5500 SW Dosch Rd, Portland
When: Thursday, October 5th, 2023 at 7pm
Why: The pursuit of technology freedom

In this presentation, Xe1phix will cover:

Firejail - Sandbox - Namespace isolation (network namespaces, mount namespaces, user namespaces, PID namespaces), Seccomp-BPF - Syscall filtering Linux Capabilities (POSIX 1003.1e) filter AppArmor - Kernel module used to sandbox programs DNS-Over-HTTPS (DoH) - Encrypted DNS resolution using Mullvad DNS OpenVPN - Secure VPN setup Wireguard - Secure VPN setup Wireguard tunnels - Multihop VPN connections. Telegram - Instant Messenger Securely connecting to Telegram using Wireguard SOCKS5 proxy. Securely connecting to Telegram using OpenVPN SOCKS5 proxy. Sandboxing Telegram with Firejail Sandboxing Telegram with AppArmor qBittorrent Securely connecting to qBittorrent using Wireguard SOCKS5 proxy. Securely connecting to qBittorrent using OpenVPN SOCKS5 proxy. Using IPFilters to blacklist bad peers ProtonVPN - Trusted VPN setup DNS leak protection VPN Killswitch IPTables - Netfilter packet filter/firewall OPNSense/PFSense - OpenVPN setup Network forensics cheatsheets TCPDump, TShark, ngrep, ss, nfdump, etc Process logging cheatsheets Journalctl, lsof, ps, fuser, etc.

Xe1phix is a Linux systems engineer (Linux+, LPIC-1, LPIC-2).

He has studied Linux for 12 years, and has read over 200 books on Linux security. His primary focus, and passion in life is studying:

Linux system hardening/security Linux memory forensics & malware analysis Intrusion Detection Systems (IDS)

Rules and Requests:

Please bring and properly fit a mask unless actively presenting

PLUG is open to everyone and does not tolerate abusive behavior on its mailing lists or at its meetings

Do not leave valuables in your car

Portland Linux/Unix Group General Meeting Announcement

Who: Julia Iacoviello
What: Using DRBD and LINSTOR to Facilitate Cloud Migration and Mobility
Where: 5500 SW Dosch Rd, Portland
When: Thursday, August 3rd, 2023 at 7pm
Why: The pursuit of technology freedom

There are many advantages to flexible cloud storage, but even with a good idea of how you might implement your environment in the cloud, the challenge of transferring legacy data may stand in your way. In this talk, Julia Iacoviello from LINBIT will explain core concepts of the open source, distributed replicated storage system, DRBD, as well as the open source storage management software, LINSTOR. Then, we will explore how these technologies can be leveraged to mitigate pain points in migrating production databases and other services into the cloud, including to containerized applications that rely on persistent stateful storage. Special considerations to be made for migration of existing data will be highlighted in this talk; additionally, a broad base of information about DRBD and general high-availability storage will be provided, with the hope that all that attend may learn something applicable to their particular use case, now or in the future.

Rules and Requests:

Please bring and properly fit a mask unless actively presenting

PLUG is open to everyone and does not tolerate abusive behavior on its mailing lists or at its meetings

Do not leave valuables in your car

Portland Linux/Unix Group General Meeting Announcement

Who: Ted Mittelstaedt
What: Setting up inexpensive home security cameras with ZoneMinder to secure your home or business Part II
Where: 5500 SW Dosch Rd, Portland
When: Thursday, February 2nd, 2023 at 7pm
Why: The pursuit of technology freedom

Today there are a number of inexpensive home security cameras on the market that can be used to decrease the chance that your home or property will be tampered with. There's been a rash of catalytic converter and gasoline thefts in the Portland area in recent years, these require expensive replacements and repair of vehicle gas tanks that have been drilled into. Many homes in Portland do not have garages and residents use street parking. With the increasing use of electric vehicles and portable charging cables, the potential for theft and mischief exists as well. While a camera system may not prevent a theft, a good system can get a clear picture of the perpetrators and allow police to make an arrest. These systems also serve as a visual deterrent. This presentation will cover several camera systems and different concerns for mounting, cabling, and camera selection as well as recording camera data using ZoneMinder running on Linux and considerations for setting up this system.

Rules and Requests:

Please bring and properly fit a mask unless actively presenting

PLUG is open to everyone and does not tolerate abusive behavior on its mailing lists or at its meetings

Do not leave valuables in your car

Our speaker this month is John Stultz. John works for Google in the Android Systems team focusing on performance and working with the upstream Linux kernel community. He's spent most of his career prior working on AOSP devboards, Android upstreaming, PREEMPT_RT and Timekeeping. He'll be talking about Proxy Execution in the Linux scheduler for resolving priority inversion in cases where priority inheritance isn't sufficient.

Portland Linux/Unix Group General Meeting Announcement

Who: Ted Mittelstaedt
What: Setting up inexpensive home security cameras with ZoneMinder to secure your home or business
Where: 5500 SW Dosch Rd, Portland
When: Thursday, February 2nd, 2023 at 7pm
Why: The pursuit of technology freedom

Today there are a number of inexpensive home security cameras on the market that can be used to decrease the chance that your home or property will be tampered with. There's been a rash of catalytic converter and gasoline thefts in the Portland area in recent years, these require expensive replacements and repair of vehicle gas tanks that have been drilled into. Many homes in Portland do not have garages and residents use street parking. With the increasing use of electric vehicles and portable charging cables, the potential for theft and mischief exists as well. While a camera system may not prevent a theft, a good system can get a clear picture of the perpetrators and allow police to make an arrest. These systems also serve as a visual deterrent. This presentation will cover several camera systems and different concerns for mounting, cabling, and camera selection as well as recording camera data using ZoneMinder running on Linux and considerations for setting up this system.

Rules and Requests:

Please bring and properly fit a mask unless actively presenting

PLUG is open to everyone and does not tolerate abusive behavior on its mailing lists or at its meetings

Do not leave valuables in your car