A few different types of security events and baseline anomalies that might indicate suspicious activity
Different traffic patterns or influx in bandwidth usage can be considered suspicous activity. Or sevices changing port usage, in turn creating variaitons in normal patterns. A sudden increase in overall traffic. This may just mean that your web site has been mentioned on a popular news site, or it may mean that someone is up to no good. A sudden jump in the number of bad or malformed packets. Some routers collect packet-level statistics; you can also use a software network scanner to track them.
Large numbers of packets caught by your router or firewall’s egress filters. Recall that egress filters prevent spoofed packets from leaving your network, so if your filter is catching them you need to identify their source, because that’s a clear sign that machines on your network has been compromised. Unscheduled reboots of server machines may sometimes indicate their compromise. You should be already be watching the event logs of your servers for failed logons and other security-related events.
Log Files contain complete records of all security events (logon events, resource access, attempted violations of policy, changes in system configuration or policies) and critical system events (service/daemon start/stop, errors generated, system warnings) that can allow a admin to quickly discover the root cause of any issues.
The Term Paper on One System Network Company Security
Networking and Telecommunications Team B Assignment Terry Anderson Mary James Russell Thee NTC 360/ Network and Telecommunication Concepts Table of Contents Introduction Technology Involved Telephone System Network SetupCostSampling of Companies Possible Future Trends Global Implications Conclusion Introduction We have been hired to design a small network for a company that will utilize the newest ...
Predictable passwords could be an issue too. User passwords are probably one of the most vulnerable ways to have a security breach. It is mostly due to weak passwords. Weak passwords being a minimum or 8 characters and not requiring a number and/or a special character. Ensure you emplement “strickt” password complexity standards.
Limit unauthorized use of network resources by allowing access during businiess hours only. Do not allow remote access permitions to anyone, except those that manipulate the data for a living.
Identification of malicious applications is of considerable importance to organizations in all sectors, but particularly for those organizations that operate in the financial sector or are constrained by regulations. If the malicious software component is a rootkit or similar program that takes complete control of a computer and then masks the fact that an attacker now controls the computer. It is difficult to be sure that your computers do not have such malicious applications running, because the rootkit might be better at concealment than you are at detecting them.
Limit access to important systems (hardware) physical BUS ports. (USB, FIREWIRE, Serial, etc) As network security professionals you can’t protect for something that never “technically” hits the network. If someone has malware installed to a thumb drive comes into your building and has access to a physical USB port then security has been breached.
Solution Requirements
The solution requirements to identify attackers overlap with those required to identify internal threats. These requirements include:
● A defense-in-depth approach to security implementation.
● Effective security audit logs.
● Reliable centralized collection of security logs.
The Term Paper on Maritime security requirements
Maritime security refers to the security offered to the shipping industry in a country. It refers to the measures taken by the government to ensure that the port, the employers, the employees as well as the equipments in the ports are well guarded from threats which face them. The ports face risks which may arise due to unlawful acts done on them or even on the persons stationed in them. Strategic ...
● Automated analysis of the security logs to identify attack signatures.
The solution requirements to detect malicious applications share some of the requirements to identify internal threats. These solution requirements include:
● Effective procedures to audit any unauthorized software on the network.
● Properly configured security audit logs.
● Reliable centralized collection and filters of security logs.
● Automated analysis of the security logs to identify suspicious behavior, with use of third-party programs where necessary.
