I’m trying to open a port for transmission but before I get to know either of the 2 options I’d like to know what you recommend and why.

OS is xubuntu 24.04

  • Not anymore. It’s nftables these days. iptables to nftables converters exist, but they’re not 100% compatible.

    Furthermore, with eBPF programmable firewalls are also efficient again, and there are various tools that leverage eBPF to do network operations at near-kernel speeds, often bypassing *tables rules you may have set up.