Keep a firewalld pulled in by fail2ban from blocking ports on EL7 (#6688)

x-ui.sh

@@ -2318,7 +2318,17 @@ setup_fail2ban_iplimit() {
             centos)
                 if [[ "${VERSION_ID}" =~ ^7 ]]; then
                     yum makecache -y && yum install epel-release -y
+                    # On EL7 fail2ban pulls in firewalld, which is enabled on the
+                    # next boot and blocks every panel/inbound port. The IP Limit
+                    # jail uses raw iptables, so a firewalld that was not there
+                    # before is not needed: keep it from starting on reboot.
+                    rpm -q firewalld &> /dev/null && had_firewalld=1 || had_firewalld=0
                     yum -y install fail2ban nftables
+                    if [[ "${had_firewalld}" == "0" ]] && rpm -q firewalld &> /dev/null; then
+                        systemctl disable firewalld 2> /dev/null
+                        echo -e "${yellow}firewalld was pulled in by fail2ban and has been disabled so it does not block your ports after a reboot.${plain}
+"
+                    fi
                 else
                     dnf makecache -y && dnf -y install fail2ban nftables
                 fi