In this video, Mike discusses techniques for keeping unwanted users out of your network, focusing on effectively using firewalls.
- For most of us, our gateway router is also our firewall.…Now a firewall by definition is software…that's designed to protect our system…from the evils of the internet.…So we really have two kinds of firewalls to deal with.…There are stateless firewalls…and there are stateful firewalls.…Stateless firewalls are firewalls that you…pretty much just turn on.…They're designed to actually look…at whatever packets are coming in…and then make decisions on it.…For example, if it sees one ICMP packet coming in,…it's probably going to ignore it.…
But if it sees a lot, that's gonna tell it…that something bad is happening.…So that's why it's called stateless.…A stateful firewall is looking at the state…of every packet.…It's looking for an IP address or a port,…something to block or something to allow.…So on this particular router I've got right here,…we can actually do both stateful and stateless.…Let me show them both to you.…Alright, to set up the firewall on this particular router,…it's got this firewall tab.…Now what I want to look at first are more…
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- What is risk management?
- Managing change to a network
- Mitigating network threats
- Training users
- Denial of service and social engineering attacks
- Hardening devices
- Testing network security
- Network monitoring
- Security information and event management (SIEM) tools