GB10 cluster stuck at ~10 Gb/s through a MikroTik CRS804? It was the switch — in three places How a 4× DGX Spark (GB10) cluster went from a hard ~10 Gb/s ceiling and a ~5 Gb/s single-flow RoCE collapse (NCCL all-reduce: 0.46 GB/s) to 109 Gb/s per rail and 23–26 GB/s NCCL busbw — by… Read More »dgx-spark-roce-crs804-fix
As it seems, adding Chinese language to a terminal session via group policy is not as simple as it should be by simply applying registry keys or group policy settings. Click on start, settings Click on “Time & Language” Click on “Add a Language” Search for “Chinese” and then click on Next Click on the… Read More »Adding Chinese Language to a terminal
Some random resources to help setup Zerotier : https://github.com/zerotier/awesome-zerotier https://github.com/joylarkin/awesome-zerotier Your own self-hoted Zerotier Controller : https://ztnet.network/ Configuring Zerotier on OPNsense https://docs.opnsense.org/manual/how-tos/zerotier.html Locking down the zerotier network so only certain networks are available : https://blog.reconinfosec.com/build-a-private-mesh-network-for-free https://blog.reconinfosec.com/locking-down-zerotier https://docs.zerotier.com/rules
Steps on how to convert a virtualbox OVA to VMware OVF References :https://jekil.sexy/blog/2015/this-ovf-package-requires-unsupported-hardware.html ovftool.exe –shaAlgorithm=SHA256 /path/to/ova_file.ova /path/to/new/ova_file-SHA256.ova .\ovftool.exe –lax source.ova destination.ovf with: with :
Links for the setup of a private notification server to avoid using open technologies like discord/telegram/ms-teams and having prying eyes on your system notifications. First, the NTFY server. This will allow you to connect to YOUR server for push notifications to Android/apple devices with the supplied app from the app store. Next, using apprise and… Read More »Private Notification Server
How to setup a phishing simulation using gophish and ensure mail is not flagged in Microsoft 365 as spam or phishing so that users will actually receive the phishing test mails. In the environment setup we have Microsoft 365 in hybrid with an on-premise exchange server. The environment has “Defender” setup also that include “safe… Read More »GoPhish Simulation setup on Microsoft 365
20230721 – After researching around for hardware for OPNsense we had several requirements : After searching forums, ebay, amazon, aliexpress and several other custom build sites, we found the brand HUNSN to have the options that fit. Some useful links : Specifications and reviews :
This page is in DRAFT and is just formative notetaking at the moment, it will however contain the full breakdown of how to get an Astaro/Sophos SG210 to run OPNsense with comparative features and a much lower running cost. Since the SG210 has a MTBF of about 12 years, it makes sense to extend its… Read More »Installing OPNsense on Astaro/Sophos UTM SG210