#Tag · bonfire.cafe

OpenSSH 10.2 released https://www.undeadly.org/cgi?action=article;sid=20251010131052 #openbsd #openssh #ssh #security #networking #login #trickery #shell #tunneling

Stefano Marinelli

@stefano@mastodon.bsd.cafe · 1 hour ago

Today, knowing I'd be in a place with less-than-excellent connectivity, I came prepared. I brought two MikroTik 4G routers with me (one, an old friend; the other, new and ready to be tested). I also have my smartphone with two SIM cards from two different mobile providers.

I noticed something extremely curious: the fixed FTTC connection sometimes has extremely strong drops or speed reductions (from 100 mbit/sec to 1 or 2). Knowing this, I brought the 4G routers on purpose to compensate. But I realized that when the FTTC connection fails, all four mobile providers also fail. The phenomenon is therefore correlated. This leads me to believe that, not being in a big city, there is a single (or multiple, but malfunctioning) point of connection that all providers, both fixed and mobile, connect to.
Note for the future: don't trust the mobile providers here.

#Networking

Peter N. M. Hansteen

@pitrh@mastodon.social · 3 hours ago

OpenSSH 10.2 released https://www.undeadly.org/cgi?action=article;sid=20251010131052 #openbsd #openssh #ssh #security #networking #login #trickery #shell #tunneling

der.hans boosted

FLOX Advocate

@FLOX_advocate@floss.social · 3 days ago

In brazen jungle marketing move @mwl reminds us you can get viruses from BSD [conferences][0]

While considering his security books remember he has a kickstarter for the next version of his networking for sysadmins book[1]

His books are delivered secured in plain brown cardboard to protect them from viruses while in the postal net

But also wear a mask and get vaccinated

You can even buy the cover

ENDS TUESDAY

[0] https://mastodon.social/@mwl@io.mwl.io/115306447433635372

[1] https://mastodon.social/@mwl@io.mwl.io/115329295183837529

#networking #sysadmin

FLOX Advocate

@FLOX_advocate@floss.social · 3 days ago

In brazen jungle marketing move @mwl reminds us you can get viruses from BSD [conferences][0]

While considering his security books remember he has a kickstarter for the next version of his networking for sysadmins book[1]

His books are delivered secured in plain brown cardboard to protect them from viruses while in the postal net

But also wear a mask and get vaccinated

You can even buy the cover

ENDS TUESDAY

[0] https://mastodon.social/@mwl@io.mwl.io/115306447433635372

[1] https://mastodon.social/@mwl@io.mwl.io/115329295183837529

#networking #sysadmin

Stefano Marinelli boosted

Peter N. M. Hansteen

@pitrh@mastodon.social · 4 days ago

OpenSSH 10.1 released https://www.undeadly.org/cgi?action=article;sid=20251006105328 #openbsd #openssh #ssh #security #newrelease #crypto #cryptography #securelogin #networking #freesoftware #libresoftware

OpenSSH 10.1 released

Peter N. M. Hansteen

@pitrh@mastodon.social · 4 days ago

OpenSSH 10.1 released

Stefano Marinelli boosted

dch :flantifa: :flan_hacker:

@dch@bsd.network · 6 days ago

#networking deep dive on packet fragmentation and reassembly in NICs with hardware offloading.

https://medium.com/@tom_84912/segmentation-offload-and-protocols-lets-be-friends-64d9e6341054

Medium

Segmentation offload and protocols: Let’s be friends!

Segmentation offload is a wildly popular technique for server performance, but has some interesting ramifications wrt protocol development

dch :flantifa: :flan_hacker:

@dch@bsd.network · 6 days ago

#networking deep dive on packet fragmentation and reassembly in NICs with hardware offloading.

https://medium.com/@tom_84912/segmentation-offload-and-protocols-lets-be-friends-64d9e6341054

Medium

Segmentation offload and protocols: Let’s be friends!

Segmentation offload is a wildly popular technique for server performance, but has some interesting ramifications wrt protocol development

Stefano Marinelli boosted

Peter N. M. Hansteen

@pitrh@mastodon.social · 7 days ago

RFC1149: Ten Years of In-Flight Internet https://nxdomain.no/~peter/rfc1149_ten_years_of_in-flight_internet.html

Yes, there was an implementation. In April 2001, my laptop was pinged via carrier pigeon.

My writeup for the 10th anniversary of the experiment, with links to copies of the original material. #rfc1149 #pigenons #networking #hacking

RFC1149: Ten Years of In-Flight Internet

Peter N. M. Hansteen

@pitrh@mastodon.social · 7 days ago

RFC1149: Ten Years of In-Flight Internet https://nxdomain.no/~peter/rfc1149_ten_years_of_in-flight_internet.html

Yes, there was an implementation. In April 2001, my laptop was pinged via carrier pigeon.

My writeup for the 10th anniversary of the experiment, with links to copies of the original material. #rfc1149 #pigenons #networking #hacking

RFC1149: Ten Years of In-Flight Internet

Stefano Marinelli boosted

Larvitz

@Larvitz@mastodon.bsd.cafe · 7 days ago

Running 14.3-STABLE right now. Intel iwlwifi driver with an Intel AX210 card giving me full 250/40 Mbps (the maximum of my DSL line) via WiFi 😊

Random connection issues, that I had with -RELEASE are solved in the current -STABLE 🙂

5Ghz, 802.11ac with 80Mhz wide channel...

We're making fast progress with FreeBSD on the modern desktop 🙂

#freebsd #iwlwifi #wifi #networking

Larvitz

@Larvitz@mastodon.bsd.cafe · 7 days ago

Running 14.3-STABLE right now. Intel iwlwifi driver with an Intel AX210 card giving me full 250/40 Mbps (the maximum of my DSL line) via WiFi 😊

Random connection issues, that I had with -RELEASE are solved in the current -STABLE 🙂

5Ghz, 802.11ac with 80Mhz wide channel...

We're making fast progress with FreeBSD on the modern desktop 🙂

#freebsd #iwlwifi #wifi #networking

alcinnz boosted

skorpy

@Skorpy@chaos.social · 2 weeks ago

Hey #FediHire 👋

I am currently looking to get back into being a (part time) #Freelancer. Do you know of any positions that would require extensive knowledge in the #Networking / #Internet industry?

My skillset includes #Sysadmin #Automation #NixOS #Peering #BGP #ISP #RtBrick #Juniper #Junos #Prometheus #Grafana and much more.

Only open to working with companies based in the EU or EFTA.

Let’s connect!
#fedihire_de #getfedihired

Stefano Marinelli boosted

Peter N. M. Hansteen

@pitrh@mastodon.social · 2 weeks ago

OpenBGPD 8.9 released https://www.undeadly.org/cgi?action=article;sid=20250926141610 #openbsd #openbgpd #bgp #routing #networking #security #freesoftware #libresoftware

OpenBGPD 8.9 released

Stefano Marinelli boosted

Peter N. M. Hansteen

@pitrh@mastodon.social · 2 weeks ago

We are about five minutes from starting the "Network management with PF" https://events.eurobsdcon.org/2025/talk/FW39CX/ tutorial at #eurobsdcon in #zagreb. Slides at https://nxdomain.no/~peter/pf_fullday.pdf as usual #pf #openbsd #freebsd #packetfilter #networking

View (PDF)

Network Management with the OpenBSD Packet Filter Toolset (T5) EuroBSDCon 2025

The OpenBSD Packet Filter (PF) is at the core of the network management toolset available to professionals working with the OpenBSD and FreeBSD operating systems. Understanding the PF subsystem and the set of networking tools that interact with it is essential to building and maintaining a functional environment. The present session will both teach networking and security principles and provide opportunity for hands-on operation of the extensive network tools available on OpenBSD and FreeBSD in a lab environment. Basic to intermediate understanding of TCP/IP networking is expected and required for this session. Topics covered include The basics of and network design and taking it a bit further Building rulesets Keeping your configurations readable and maintainable Seeing what your traffic is really about with your friend tcpdump(8) Filtering, diversion, redirection, Network Address Translation Handling services that require proxying (ftp-proxy and others) Address tables and daemons that interact with your setup through them The whys and hows of network segmentation, DMZs and other separation techniques Tackling noisy attacks and other pattern recognition and learning tricks Annoying spammers with spamd Basics of and not-so basic traffic shaping Monitoring your traffic Resilience, High Availability with CARP and pfsync Troubleshooting: Discovering and correcting errors and faults (tcpdump is your friend) Your network and its interactions with the Internet at large Common mistakes in internetworking and peering Keeping the old IPv4 world in touch with the new of IPv6 The tutorial is lab centered and fast paced. Time allowing and to the extent necessary, we will cover recent developments in the networking tools and variations between the implementations in the OpenBSD and FreeBSD operating systems. Participants should bring a laptop for the hands on labs part and for note taking. The format of the session will be compact lectures interspersed with hands-on lab excercises based directly on the theory covered in the lecture parts. This session is an evolutionary successor to previous sessions. Slides for the most recent version of the PF tutorial session are up at https://nxdomain.no/~peter/pf_fullday.pdf, to be updated with the present version when the session opens.

Stefano Marinelli boosted

Peter N. M. Hansteen

@pitrh@mastodon.social · 2 weeks ago

Tomorrow 2025-09-25 at 10:30 CEST, the refreshed "Network Management with the OpenBSD Packet Filter Toolset" https://events.eurobsdcon.org/2025/talk/FW39CX/ by yours truly, @stucchimax and Tom Smyth will start at #eurobsdcon.

We will put the updated slides online just before the session starts.

#openbsd #freebsd #pf #packetfilter #networking #firewall #trickery #security