RHEL7/CentOS7 features a new
firewalld firewall service, that replaces the
iptables service (both of which use
iptables tool to interact with kernel's Netfilter underneath).
firewalld can be easily tuned to block incoming traffic, but as noted by Thomas Woerner 1,5 years ago "limiting outgoing traffic is not possible with firewalld in a simple way at the moment". And as far as I can see the situation hasn't changed since then. Or has it? Is there any way to block outgoing traffic with
firewalld? If not are there any other "standard" ways (on RHEL7 distro) of blocking outgoing traffic except manually adding rules through