The default firewall service in Oracle Linux 7 is firewalld. In previous versions of Linux, you use iptables. firewalld offers several advantages over iptables:
- Changes do not require restart of the firewalld service.
- Networks can be separated into different zones based on the level of trust.
Firewall services is one of the many topics covered in Oracle's Linux system administration training. You can learn about firewalld and many other topics by taking the Oracle Linux 7: System Administration course. This course is available as a:
- Training-on-Demand: Start training within 24 hours of registration, following lectures at your own pace through streaming video and booking time to perform hands-on exercises when suits your schedule.
- Live Virtual Event: Attend a live event from your own desk, no travel required. Choose from a selection of events on the schedule to suit different time-zones including 4, 12, and 25 September, 9, 16 and 24 October, 28 November and 4 December 2016.
- In-Class Event: Travel to an education center to take a class. Below is a selection of the in-class events already on the schedule.
| Location | Date | Delivery Language |
| Melbourne, Australia | 26 September 2016 | English |
| Sydney, Australia | 5 September 2016 | English |
| Brussels, Belgium | 19 September 2016 | English |
| Brasilia, Brazil | 24 October 2016 | Brazilian Portuguese |
| Sao Paulo, Brazil | 22 August 2016 | Brazilian Portuguese |
| London, England | 7 November 2016 | English |
| Reading, England | 5 September 2016 | English |
| Paris, France | 10 October 2016 | French |
| Berlin, Germany | 14 November 2016 | German |
| Dortmund, Germany | 5 September 2016 | German |
| Hamburg, Germany | 14 November 2016 | German |
| Munich, Germany | 22 August 2016 | German |
| Athens, Greece | 26 September 2016 | Greek |
| Milan, Italy | 19 September 2016 | Italian |
| Jakarta, Indonesia | 10 October 2016 | English |
| Kuala Lumpur, Malaysia | 10 October 2016 | English |
| Mexico City, Mexico | 19 September 2016 | Spanish |
| Utrecht, Netherlands | 1 August 2016 | English |
| Warsaw, Poland | 14 November 2016 | Polish |
| Johannesburg, South Africa | 1 August 2016 | English |
| Bangkok, Thailand | 15 August 2016 | English |
| Abu Dhabi, United Arab Emirates | 9 October 2016 | English |
| Miami, FL, United States | 17 October 2016 | English |
| Chicago, IL, United States | 28 November 2016 | English |
| Albuquerque, NM, United States | 29 August 2016 | English |
| Reston, VA, United States | 26 September 2016 | English |
If you want to learn about Linux 5 or 6, take the Oracle Linux 5 & 6 System Administration course. You can take this course in the following formats:
- Training-on-Demand
- Live-Virtual Event: Choose from events to suit different time-zones including 25 July, 22 August, 4 and 12 September, 16 and 17 October, and 7 November 2016.
- In-Class Event: Events on the schedule include:
| Location | Date | Delivery Language |
| Sao Paulo, Brazil | 29 August 2016 | Brazilian Portuguese |
| Reading, England | 12 September 2016 | English |
| Milan, Italy | 26 September 2016 | Italian |
| Rome, Italy | 12 December 2016 | Italian |
| Tokyo, Japan | 12 September 2016 | Japanese |
| Seoul, Korea | 19 September 2016 | Korean |
| Kuala Lumpur, Malaysia | 17 October 2016 | English |
| Petaling Jaya, Malaysia | 22 August 2016 | English |
| Mexico City, Mexico | 22 August 2016 | Spanish |
| Casablanca, Morocco | 1 August 2016 | French |
| Utrecht, Netherlands | 3 October 2016 | English |
| Johannesburg, South Africa | 22 August 2016 | English |
| Pretoria, South Africa | 5 December 2016 | English |
| Istanbul, Turkey | 10 October 2016 | Turkish |
| Belmont, CA, United States | 8 August 2016 | English |
| Fort Lauderdale, FL, United States | 25 July 2016 | English |
| Reston, VA, United States | 31 October 2016 | English |
To register an event or to learn more about the Oracle Linux curriculum, go to http://oracle.com/education/linux.