
- allow HANA system replication:

secondary # ss -tulpan | grep hdb.*server | grep -v 127.0.0.1 |\
 grep -v "\*" | awk '{print $6}' | awk -F: '{print $2}'

secondary # iptables -I INPUT -p tcp -m multiport --ports 40001,40002,40003 -j ACCEPT

- remove above rule:

secondary # iptables -D INPUT -p tcp -m multiport --ports 40001,40002,40003 -j ACCEPT
