MBIX Peering LAN IP space hijacked via BGP and used for spam: investigating unauthorized BGP announcements of 206.72.208.0/24 through AS-Path 9002 44050 131788, demonstrating why IX peering LAN space should not be globally routable.
Riot Games engineering blog on optimizing BGP routing for League of Legends: why buying transit from Tier 1 providers doesn't solve all latency problems and how peering at Internet Exchanges is critical for game performance.
Implementing BGP community-based filtering to control route advertisements and prevent route leaks: designing community number ranges for route sources, localpref modifiers, prepending, and selective upstream/peer/customer announcements with example Cisco route-maps.
Implementing HTML-formatted Nagios alerts using nagios-html-email: installing via npm, configuring custom notification commands, and replacing mailx with sendmail to properly render HTML email notifications.
Building Nagios 4 from source on Debian to monitor 75 hosts and 130 services: implementing custom checks for TCP services, DNS zones, XMPP, Tor, HTTP/HTTPS with cert expiry, plus SMS alerts via nagios-twilio and enhanced email with mtr output.
