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Testing and Monitoring Security

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Submitted By knightblade48
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Testing and Monitoring Security Controls

Two types of security events and baseline anomalies that are easy to identify are users that install software that is dangerous and when packets are sent to your router that are not permitted to be routed throughout your network. Using a security service or protocol that either comes with your operating system, or IOS in a routers case, is easy to manage so that administrators can be alerted when unauthorized activity takes place throughout your domain. A good administrator will set “triggers”, which are activities that are tagged for alarm, to allow him or herself to be alerted when a breach occurs. These services use protocols such as TCP, UDP, ICMP and SNMP(v1-3). Also, many firewalls can be set up to monitor incoming traffic by analyzing the ports on the TCP/UDP header and ensuring they are permitted to be passed within the domain. Within a windows domain, you can establish group policies to enforce restrictions on users that install unwanted software that can jeopardize security. These can either be enabled when base-lining an OS image for distribution, or through the domain controllers WAN policy group. Many networks can become prey to bad router configuration. WAN/LAN links usually suffer because administrators are reluctant to take a router offline to update access-lists. A possible solution to alleviating slip ups is to place an IP filtering firewall behind the router. This can be done in each area of the domain before establishing WAN links, or done intermittently through trunking. These firewalls can allow or permit any type of traffic based upon MTU or port type. Protocols such as SNMPv3 can run of software that allows the administrator to monitor WAN connectivity, port attacks, and also manage overhead. Also, this protocol allows independent management of many routers and switches throughout the...

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