ccna 200-301 learning

ccna 200-301 learning.Protecting your network from attacks requires constant vigilance and ongoing education. The following are best practices for making your network the best safeguard it can be.Install the latest patches weekly (or daily if possible) to protect against buffer overflow and privilege escalation attacks. Shut down unneeded services and ports. Use strong passwords and change them frequently. Control physical access to the system. Avoid unnecessary Web page input. Some Web sites allow users to enter usernames and passwords, and hackers can enter multiple usernames; for example, entering "jdoe;rm.rf7" may allow an attacker to delete the root file system of a UNIX server. Programmers should limit input and not accept illegal characters such as |; v> as input.1.4 Cisco Network Foundation Protection Framework 21 Regularly back up and test backed up files. Educate employees about the risks of socialengineering and establish a strategy for verifying the security of your network by using phone, email, or in-person. Educate employees about the risks of socialengineering and establish strategies to authenticate by phone, email or in person. Encrypt and password protect sensitive data.Implement security hardware and software, such as firewalls, IPS, VirtualPrivateNetwork (VPN) devices, antivirus software, and content filtering. Implementing security hardware and software such as firewalls, IPS, VirtualPrivateNetwork (VPN) devices, anti-virus software and content filtering. Develop a written security policy for your company. These approaches are only a starting point for sound security management. Organizations must remain vigilant to protect against evolving threats.1.4 Cisco Network Foundation Protection Framework