Perl script to monitor the rate of logs
In a previous article (IPTables Logging in JSON with NFLOG and ulogd2) we learned how to log certain…
Import configuration from Hiera or a Git repository with YAML files into Terraform
De-duplication of configuration information is key when managing large environments which use different types of automation (Terraform, Jenkins,…
IPTables Logs in Loki and Grafana (with Promtail)
In the previous article (Logging in IPTables with NFLog and ulogd2) rules were created to log certain IPTables…
IPTables Logging in JSON with NFLOG and ulogd2
Logging with IPTables requires the use of an extra IPTables extension called NFLOG (https://manpages.debian.org/experimental/iptables/iptables-extensions.8.en.html#NFLOG) and a separate daemon…
Terraform and libvirt nodes
Libvirt (libvirtd) nodes (based on KVM and Qemu) are a great and cheap (read: free) alternative of deploying…
Terraform: Create a map of subnet IDs in Azure
The subnets accessor in the azurerm_virtual_network Terraform data source returns a list of subnet names only. In most…
Time based ACL (access control lists) features do not exist in BSD’s packet filter (PF). Having your network…
Block countries on OpenBSD using pf
Same as in the previous article, full countries can be easily blocked on OpenBSD firewall using the pf…
Block countries using IPtables and IPDeny.com
Certain server setups do not require access for all countries or just want to block certain countries since…
Install OpenBSD 6.0 on a Soekris net6501
Recently I bought a Soekris net6501 to build a home network in my new house.Things you need before…