http://imil.net/blog/tags/networking/ Recent content in Networking on iMil.net Hugo en-us Sun, 22 Dec 2019 07:16:16 +0000 http://imil.net/blog/posts/2019/monitor-network-health-with-somebar/ Sun, 22 Dec 2019 07:16:16 +0000 http://imil.net/blog/posts/2019/monitor-network-health-with-somebar/ <p>I knew about a <em>MacOS</em> task bar plugin called <a href="https://github.com/tonsky/AnyBar">Anybar</a>, which basically draws an icon on the task bar to which you can send behaviors with a simple <code>nc</code> command. Naturally, someone cloned it for our beloved Free Unices environments, and it&rsquo;s called <a href="https://github.com/limpbrains/somebar">somebar</a>.</p> <p>I am sometimes in places with weak network, and I like to see at a glance how is my connection doing, <a href="https://github.com/limpbrains/somebar">somebar</a> seemed the perfect tool for the task.</p> http://imil.net/blog/posts/2019/freebsd-networking-issues-disable-offloading-and-checksum/ Sun, 15 Dec 2019 06:39:50 +0000 http://imil.net/blog/posts/2019/freebsd-networking-issues-disable-offloading-and-checksum/ <p>In the past month, it&rsquo;s the second time I&rsquo;m being bitten by <em>FreeBSD</em> in the networking field.</p> <p>First time with my own gateway, I had this weird behaviour where machines on a different <em>VLAN</em> than the main one would use the Internet at full speed but would struggle to make any transfer from the main <em>VLAN</em>.</p> <p>Turns out this was a <code>tcp segmentation offload</code> issue, which seems to cause so much problems it is <a href="https://docs.netgate.com/pfsense/en/latest/hardware/tuning-and-troubleshooting-network-cards.html">disabled by default in some appliances</a>.</p>