What is firewall Linux?

Related questions

1. Is Linux secure for banking?
2. What is mangle in iptables?
3. Why does Linux not need antivirus?
4. What is firewall service in Linux?
5. Does Ubuntu have a firewall?
6. Is Linux really safer than Windows?
7. Is a firewall necessary?
8. What is iptables command?
9. Does Linux need a firewall?
10. What is IP table and firewall in Linux?

Tags

1. #incoming
2. #world
3. #system
4. #spread
5. #iptables
6. #traffic
7. #generally
8. #outgoing
9. #rules
10. #security
11. #based
12. #default
13. #control
14. #limit
15. #software
16. #refers
17. #firewall
18. #computing
19. #barrier
20. #hardware
21. #network
22. #linux
23. #which