Tin Nguyen tinwritescode

Pure ESM package

The package linked to from here is now pure ESM. It cannot be require()'d from CommonJS.

This means you have the following choices:

Use ESM yourself. (preferred)
Use import foo from 'foo' instead of const foo = require('foo') to import the package. You also need to put "type": "module" in your package.json and more. Follow the below guide.
If the package is used in an async context, you could use await import(…) from CommonJS instead of require(…).
Stay on the existing version of the package until you can move to ESM.

	# create a new chain
	iptables -N SAMPQUERY

	# check that incomming packet is a samp query packet and divert to the new chain
	# this inserts the rule as the first in the chain, but should probably be a bit further down (e.g. after checking lo interface)
	iptables -I INPUT -p udp \! -f -m udp --dport 7777 -m conntrack --ctstate NEW,ESTABLISHED -m u32 --u32 "0x0>>0x16&0x3c@0x8=0x53414d50" -j SAMPQUERY

	# only allow connection from ephemeral source ports
	# connection attempts from ports outside this range are likely rogue clients
	iptables -A SAMPQUERY -p udp --sport 49152:65535 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT