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Security Solutions
High-speed, always-on Internet connections offer businesses significant advantages but also threaten network security. Anxious to leverage the power and speed of inexpensive broadband connections, many organizations do not adequately address the security issues these connections raise.
For example, hackers or unauthorized users may steal or corrupt important information and disrupt access to sites vital to costly business transactions. Confidential data may be inadvertently disclosed during transmission. Viruses and Trojan Horses, transmitted across the Internet or in portable media, can infect and damage local networks and rapidly spread to other networks. In addition, objectionable content, which has no place in a productive and responsible workplace, is often freely accessible on the Internet as well as sites which can be both a productivity drain and a security risk.
Virtual Private Networking (VPN)
Small to medium size organizations, and large enterprises alike need secure, cost effective communications with business partners, clients and telecommuters. Previously, slow dial-in connections or expensive leased lines or frame relay connections were required to accomplish this task. Virtual Private Networks (VPNs) enable organizations to establish these secure communications in a manner that is seamless and transparent to end users at an affordable cost.
VPNs use data encryption and the public Internet to provide high performance, secure communications between sites without incurring the expense of leased site-to-site lines, and provide secure, encrypted access.
Firewalls & Security Appliances
A firewall protects a network against Internet based theft, destruction, or modification of data by examining all traffic passing from the Internet or Wide Area Network (WAN) to the private, local area network (LAN). D&A InfoTech works with several leading suppliers of security appliances and products which can greatly simplify the tasks associated with securing your data from attack. These products also contain optional integrated remote access and data protection solutions to consolidate your security. These products are configurable to meet the specific security needs and policies of your organization.
D&A InfoTech partners with a wide array of providers of security solutions, both software and hardware based, which address most of the threats listed here.
Virus and Malware Protection
Computer viruses and Malware/Spyware are a security threat to Internet connected networks. Viruses are malicious software programs that attach themselves to applications and files in memory or on disks. Destructive viral code may infect networked PCs through E-mail attachments, seemingly harmless ads on web pages or infected files on floppy disks. Viruses may damage data, cause computer crashes or lie dormant for later use. Because users with infected machines may not discover viruses immediately, they can unwittingly spread damaging viruses throughout a network.
Malware is software designed to infiltrate or damage a computer system without the owner's informed consent. It is a portmanteau of the words "malicious" and "software". The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code.
Many normal computer users are however still unfamiliar with the term, and most never use it. Instead, "computer virus" is used in common parlance and often in the general media to describe all kinds of malware, though not all malware is a virus.
Software is considered malware based on the perceived intent of the creator rather than any particular features. It includes computer viruses, worms, trojan horses, spyware, dishonest adware, and other malicious and unwanted software.
Content Filtering
A content filter allows organizations to set and enforce Acceptable Use Policies (AUPs) governing what materials can and cannot be accessed on the organization’s computers. Without a content filter, users have unlimited access to all Internet resources, appropriate and inappropriate, benign and dangerous.
Intrusion Detection Systems
An intrusion detection system (IDS) is used to detect several types of malicious behaviors that can compromise the security and trust of a computer system. This includes network attacks against vulnerable services, data driven attacks on applications, host based attacks such as privilege escalation, unauthorized logins and access to sensitive files, and malware (viruses, trojan horses, and worms).
An IDS is composed of several components: Sensors which generate security events, a Console to monitor events and alerts and control the sensors, and a central Engine that records events logged by the sensors in a database and uses a system of rules to generate alerts from security events received. There are several ways to categorize an IDS depending on the type and location of the sensors and the methodology used by the engine to generate alerts. In many simple IDS implementations all three components are combined in a single device or appliance.
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