Tag: security

VACL (VLAN Access List)

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Scenario: For this lab you need REAL hardware. You can’t use switches in GNS3! You need at least a Cisco Catalyst 3550 switch for this lab. The network agency corporation has security issues with their network. They are…

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Transparent IOS Firewall

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Scenario: You are part of the security team for the Rotterdam Harbor located in The Netherlands. One of your firewalls has crashed and due to decreased IT budgets you don’t have any spare firewalls around. You do have…

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Role Based CLI Access

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Scenario: As the security specialist for your company you want to ensure employees don’t get more access than they need to. At this moment everyone is logging in using privilege level 15 for your routers and you want…

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TCP Intercept Watch Mode

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Scenario: As part of the security team you are always looking for ways to improve security within the company. Lately the company is under fire by TCP SYN floods. You don’t have any budget to buy some firewalls…

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TCP Intercept

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Scenario: As part of the security team you are always looking for ways to improve security within the company. Lately the company is under fire by TCP SYN floods. You don’t have any budget to buy some firewalls…

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Unicast Reverse Path Forwarding (URPF)

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Scenario: As part of the security team you are always looking for ways to improve security within the company. Recently you are being plagued by different sources sending spoofed IP packets. You want to protect your network by…

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Policy Based Routing Traffic Filtering

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Scenario: As part of the security team you are always looking for ways to improve security within the company. You want to get rid of all the local vty/console logins within your network so you decide to implement…

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IP Fragment Filtering

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Scenario: As part of the security team you are always looking for ways to improve security within the company. You heard bad things about fragmented IP packets being a security risk to your network. You decide to block…

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Reflexive Access-List

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Scenario: As part of the security team you are always looking for ways to improve security within the company. You want to get rid of all the local vty/console logins within your network so you decide to implement…

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AAA Command Authorization

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Scenario: As part of the security team you are always looking for ways to improve security within the company. You want to get rid of all the local vty/console logins within your network so you decide to implement…

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