Developed IPSet support within the Configuration Checker for the thaJeztah/docker repository, focusing on enhancing validation for ipset-enabled systems. The work involved adding flags for NETFILTER_XT_SET and IP_SET_HASH_NET in the contrib/check-config script, enabling more accurate detection of required kernel modules. Using shell scripting and leveraging knowledge of Linux networking concepts, the implementation reduced configuration risks and improved onboarding for deployments utilizing advanced Netfilter and ipset features. This contribution expanded the tool’s validation coverage, supporting system administrators in managing complex environments. The approach demonstrated practical application of configuration management and system administration skills in a real-world open source context.