The command iptables -n -v -L displays the current rule set with packet and byte counters and does not resolve names, which can slow down the output if there are lots of network traffic and active rules. This is commonly used to get a precise and quick overview of the rules that are counting traffic on a Linux server. iptables -L -v also lists the active rules with verbose output, but without the -n option, it may attempt to resolve names, which can be less efficient in some scenarios. iptables -S lists the active rules in a format that can be used as input to restore the table, but it does not include packet and byte counts. The iptables -t nat -L command specifically checks only the rules in the 'nat' table, which is not what the question asked for.