Firewall and Service Management on Linux Essay Example | Topics and Well Written Essays - 1000 words

Firewall and Service Management on Linux - Essay ExampleIf the formation is connecting to other systems for the purpose of sending data out, for all number of possible reasons, including data theft, or participation in a botnet as an example.netstat - an option lists all listening ports of TCP and UDP connections. It might be reclaimable sometimes to be able to list them all when analyzing a clients system, given that it gives the big picture. However, when context is needed, some more filtering should be through to get a break dance idea of the issues one is dealing with. Thus other subordinations need to be used in order to provide better context. However, if a port is open that the client system is not using then the port needs to be closed to protect the client system from an attacker.netstat at shows all TCP (Transmission Control Protocol) port connections only. TCP statistics can show when a client system is being attacked, such as during vindication of service attacks. T CP parameters which show dropped connection requests increase rapidly when under attack.netstat ant shows the output without running a DNS query, which would slow down the command resolution time. Instead, it will only show the IP address without showing domain names. This might be more useful when time is of essence, and one needs answers prodigal in case of an attack on a client system.netstat nlpu shows the process that owns listening UDP socket connections. sudo netstat nlpu shows the process owner and process ID (PID). This is useful in determining which design is running a process. This can help determine whether it is a rogue process or not, and can help in hardening client systems.The netstat command shows detailed statistics of each network connection, interface, routing tables, network protocols and it also displays other network-specific information. The netstat command helps us to deal with network issues in Linux.Network administrators are also further to have enhan ced performance measurement when they use the netstat command.