The mystery of the 502 Kibana errors

We upgraded kibana from version 6.8 to 7.9, and started having issues with access via our apache proxy. Our proxy terminates SSL sessions and uses x509 client certificates for authentication, authorisation and accounting, so it’s a right pain. Before the upgrade background traffic was about 720 requests an hour — one permament monitoring machine with […]

Cisco Firepower, Traceroute, and “Unsupported CLI”

We have a couple of Cisco firepower firewalls inside our network, protecting certain circuits that arrive from buildings we don’t control One of the many major annoyances with them is their invisibility to traceroute. Paul Stewart’s blog post about enabling them (forcing them to decrement the TTL as packets travel through them) seems just what […]

Fixing Vim 8.0

Debian Stretch and Ubuntu 18.04 (bionic) have come with vim 8.0, which breaks all sorts of things. The following vimrc file seems to fix things source /usr/share/vim/vim80/defaults.vimset noincsearchset scrolloff=0set mouse= And then a couple of things I like set background=darkset tabstop=8 softtabstop=0 expandtab shiftwidth=4 smarttab The first line has to source the default to enable […]