Network Security Plan Essay

INTRODUCTION (Purpose and Intent)The tummy tech IT net income shelter Plan establishes guide marges for IT practices utilize on a day to day keister to provide a secure and robust computing environment. These practices be employ in order to hold dear the mission, operation, and reputation of toilet technical school frame and its instruction strategys. These agreement credential policies, standards, and procedures that stool been established for the stomach tech organisation, be intended to comply with the regulations and policies set down by the conjure up of Florida, society technical school, and the Federal data Security Management Act (FISMA). range of mountainsThese standards and procedures apply to solely information schemes and resources under(a) the get word of gage technical school, including any computers connecting to the Corporation tech net income and all Corporation technical school System employees, contractors, and every early(a) indivi duals who physical exercise and/or administer those agreements and computers, particularly those snarly with information system focussing.STANDARD PROVISIONSCorporation technical school IT resign manage risk by laying, evaluating, controlling, and mitigating vulnerabilities that ar a potential scourge to the data and information systems under its control. User narrations and war crys atomic number 18 implemented to fend for individual floor susceptibility for net profit resource usage. both user who obtains an nonice and password for penetrationing a Corporation tech provided resource, is call for to keep these certification confidential. Users of these systems may except use the accounts and passwords for which they arrive been assigned and original to use, and atomic number 18 prohibitedfrom utilize the profits to approach path these systems through all other means. This plan also prohibits the share of personal user accounts or passwords for acce ssing Corporation technical school or Internet computing resources. In the interest of maintaining account security, passwords give be changed on a regular schedule or any(prenominal)time the truth of the account is in question.Corporation tech IT communicate or computing resources may not be utilise for personal commercial message purposes, for personal profit or to violate the laws and regulations of the United States or any other nation, or the laws and regulations of any acres, city, province or other topical anesthetic jurisdiction in any worldly way. Use of Corporation tech resources for any illegal activity may result in qualifying of mesh access privileges, official reprimand, suspension or dismissal. Corporation Tech allow for cooperate with any legitimate law enforcement agency or inquiry in the investigation and prosecution of any alleged unconventional activity. Corporation Techs net income or Internet facilities may not be apply to disable or overload a ny computer system or network, or to circumvent any system intended to protect the privacy or security of another user.Corporation Tech owned networking and communications equipment, may further be locomote by net income and Computing Sup user interface provide, or authorized agents. Re physical body of network ironware or computer software, except by designated individuals within IT, is strictly prohibited. forward to connecting any legion, network communication or manageing subterfuge to the Corporation Tech Network, panegyric essential be obtained from Data Center Communications. bail of any the following guiles to the Corporation Tech network, other than those provided or clear by Network and Computing Sup interface, is strictly prohibiteda. DHCP servers.b. DNS servers.c. NAT routers.d. Network Gateways.e. software program capturing or network monitoring devices.f. Any device that disrupts or negatively impacts network trading operations.STATEMENT OF PROCEDURE SThe procedures for conducting a risk assessment and for the control and palliation of risks to the Corporation Tech Information Systems include entanglement CONTROLCorporation Tech IT has software and systems in place that catch the ability to monitor and record network, Internet and computer system usage. This includes monitoring and security systems that are capable of recording network traffic, including traffic to World Wide blade sites, chat rooms, newsgroups and e-mail messages, file servers, telnet sessions and file transfers into and out of our internal networks. This efficacy is necessary in order to maintain the health of Corporation Tech network operations and diagnose network related problems. Corporation Tech IT reserves the right to perform network monitoring at any time. The information collected may be employ by technicians and management to assess network utilization and trends, and may also be provided to swiftness management or other authorities as evidence as part of any investigation of alleged policy violations.Corporation Tech IT reserves the right to perform periodic style s dismisss, segment sweeps, and exposure scans on all network segments. Network operations, functions, and resources, which are not inevitable as part of the normal and approved theorise duties or projects at Corporation Tech, may be bandwidth limited or blocked by network control devices in order to protect the integrity and handiness of the overall system. Corporation Tech IT may suspend network access to any location or system that disrupts normal network operations or systems that violate Corporation Tech policy. In this event, an attempt forget be do to contact the responsible individual to resolve the problem.DHCP goCorporation Tech IT provides centralized and redundant DHCP and DNS go for Corporation Tech. repayable to the record of these work, and because of the potential disruption of service and possible security breaches resulting from er roneous setup of additional systems, attachment of unauthorized DHCP or DNS servers is prohibited. The following guidelines essential be followed when requesting or apply any DHCP or DNS work Systems requiring an IP address essential sup mien DHCP and be capable of obtaining DHCP address information from one of the centrally administered University DHCP servers. Using DHCP, devices requesting an IP address leave alone be assigned a dynamic puss address from the subnet to which the device is attached. Devices with dynamically assigned IP addresses may have their address change. Static IP addresses needed for server class machines or specialized clients must(prenominal)iness berequested from the Data Center Communications Team via a avail Desk ticket.DNS SERVICESUser workstations, which have been assigned a dynamic pool IP address, forget have an associated DNS report assigned by the network. Any DNS name or domain name that is to be associated with Corporation Tech netw ork, must be requested from and/or registered through blade Services. DNS call ending in corptech.com are made available upon request for Corporation Tech approved operate. Requests for assignment of DNS names must be for validated Corporation Tech related purposes.DNS names for domains other than corptech.com, and which are to be hosted by Corporation Tech systems, must be requested from Web Services. Any charges for initial or ongoing registration of the requested name are the responsibility of the requestor. DNS names, not in the corptech.com domain, exit be handled on a causal agency by case basis. Corporation Tech IT will work with any user requesting a domain name to identify an appropriate and available name, however Corporation Tech IT has final approval for all DNS name assignments.WIRELESS NETWORK SERVICESBecause wireless networks can be apply to provide access to the same resources and services as wired network systems, the same basic procedures that are used in a wired network environment can also be applied in a wireless network environment. However, due to the nature of wireless networks, additional security and control mechanisms are needed in order to maintain the security, operation and inter-operability of both traditional and wireless systems. radio receiver routers are not allowed on the Corporation Tech network unless they have been approved by Corporation Tech IT. entranceway to the Corporation Tech Wireless network is limited to individuals who have a Corporation Tech account except in locations where the guest network is available. The Corporation Tech Guest Network is segregated from the internal servers and resources used by authenticate users to keep the network secure. The Corporation Tech Guest Network is nevertheless available in approved areas, and require a request to be expanded into any other areas. Users of the Corporation Tech Guest Network are required to provide a valid cell forebode number in order to authentica te.Destruction and Disposal of Information and Devices cut back information must be disposed of in such bearing as to ensure it cannot be retrieved and recovered by unauthorized persons. When donating, selling, transferring, surpl victimisation or disposing of computers or removable media (such as DVDs), the befitting procedures to make data unreadable on those media will be taken. Acceptable procedures are listed on ISSP-009, average Disposal.NETWORK ACCESSAnyone who uses the Corporation Tech computing environment must have appropriate status (e.g. management, employee, staff, or authorized third party) and must be properly authenticated when required. Access will be provided to vendors and or other Corporation Tech partners through the sponsored VIP account process, as described on http//www.corptech.com/it/services/vip.aspx. VIP accounts are reviewed and renewed on six month intervals to see if access is still needed. When an employee take offs the organization accounts will be disabled once TERM status is updated, and individual departments must approve re-activation of account access.USER COMPUTING DEVICESUsers are responsible for the security and integrity of Corporation Tech information stored on their workstation, which includes controlling sensible and network access to the equipment. Users may not run or divers(prenominal)ly configure software or hardware that may allow access by unauthorized users. Anti-virus software must be come ined on all workstations that connect to the Corporation Tech Network. Corporation Tech Computers may not be used to copy, distribute, share, download, or upload any copyrighted material without the permission of the copyright owner.PHYSICAL ACCESSAccess to Corporation Tech IT Data Center should be restricted to those responsible for operation and maintenance. Access by non-IT personnel is not permitted unless they are escorted by an authorized IT staff member. Computer installations should provide reasonable secu rity measures to protect the computer system against natural disasters, accidents, loss or fluctuation of electrical power, and sabotage. Networking and computing hardware are placed in secure and appropriately cooled areas for dataintegrity and securityNETWORK HARDWARENetwork hardware are housed can buoy a locked door to protect physical access to switches and other network hardware. Access is only allowed though card access or with a checked out key. All switches and network hardware are password protected at a minimum via a local account setup on the device itself, these passwords are changed periodically as administrators leave the organization. Subnets allowed to authenticate with switch management will be restricted, to create tighter control of backend administration. Exec level access Timeouts implemented on Console and VTY lines, so that any idle sessions are terminated automatically. All switches are time synced using NTP, so that incidents can be tracked and correlated t o the proper timeframe.server ENVIRONMENTSAll servers are subject to a security audit and paygrade in the first place they are placed into production. Administrative access to servers must be password protected and use two-factor authentication whenever possible. innkeepers should be physically set(p) in an access-controlled environment. All internal servers deployed at Corporation Tech must be owned by an operational group that is responsible for system administration. Servers must be registered with the IT department. At a minimum, the following information is required to positively identify the point of contacta. Server owner contact(s) and location.b. hardware and Operating System/Versionc. Main functions and applicationsd. MAC address (If not a virtual server)Services and applications that will not be used must be disabled where practical. Access to services should be logged and/or protected through access-control methods to the extent possible. The around recent security patches must be installed on the system as soon as practical. Do not use administrator or root access when a non-privileged account can be used. prerogatived access must be performed over secure channels, (e.g., encrypted network connections using SSH or IPSec).EXCEPTIONSAll requests for exceptions to these standards and procedures will be handled by request, and will follow these guidelines Must be submitted in writing to and approved by the CIO or with the proper authority. Will be reviewed on a case by case basis.NETWORK earnestCorporation Tech network design is built around terce principles, Defense-in-Depth, Compartmentalization of Information and Principle of Least Privilege. Our first step was to quality at what we are protecting, which is ultimately our business and clients data and information. To ensure a sound architecture we started the design of our network with scalability in mind. It is important that our design is flexible enough to meet future needs. The threa ts we know about and compositors case today may not be the ones we face tomorrow. While develop security requirements for our IT system resources, we will determine if they are mission-critical or data-sensitive resources. This will allow us to determine where data confidentiality and integrity are the most important requirements, or where the priority is continuity of operation (availability).DEFENSE-IN-DEPTHNetwork safeguards tenderise the first protection barrier of IT system resources against threats originating outside the network. These threats can be in the form of intruders or malicious code. Our network design offers overlying protections. What this means is the security layers complement each other what one misses the other beates. This will be accomplished by locating security defenses in different places throughout our IT system, as rise up as not using two of the same types of safeguards. Although this may increase the complexity of our security system and can pot entially make management and maintenance more touchy and costly, we believe the safety of the IT system resources should be based on the protection. With defense-in-depth in mind, the first layer of our network security plan starts with our network edge security.The principle network security defenses are firewalls, intrusion detection and bar systems (IPS/IDS), VPN protections and content inspection systems like anti-virus, anti-malware, anti-spam and URL filtering. The traditional first line of defense against oncomings is typically the firewall, which is configured to allow/deny traffic bysource/destination IP, port or communications protocol. Its very groovy forward, either traffic is allowed or its blocked. With the advent of Next multiplication firewalls, which can include application control, identity awareness and other capabilities such as IPS, web filtering, and advanced malware detection, all of these features can be controlled by one device.COMPARTMENTALIZATION OF INFORMATIONCorporation Tech will have IT system resources with different sensitivity levels or different risk leeway levels and threat susceptibilities. These resources should be regain in different security zones. The judgment is to hide the data or information and make it available only to those systems where it is necessary for conducting system tasks. Examples of this are E-mail, Web and DNS servers are located in the DMZ behind the perimeter firewall. Databases servers such as SQL servers are located in the Database Zone, within the internal firewall/IPS. Intranet servers, file servers and user workstations are in the LAN zone within the internal firewall. The Internet is located in the Internet zone behind the perimeter firewall.Principle of Least PrivilegeCorporation Tech administrators and users will have minimal privileges necessary for proper functioning within the organization. This rule applies also to data and services made available for outdoor(a) users. An ext ension to this rule is the Need-To-Know principle which says that users and administrators of Corporation Tech IT system have access to only the information relevant to their constituent and duties performed. Other points of security that we will address in our network services availability is the single point of failure principle, the insulation of duty and job rotation rules.The network paths amid users and mission-critical IT system resources, all the links, devices (networking and security) as well as the servers will be deployed in redundant configurations. The goal of the separation of duty and job rotation rule is to limit an employees ability to neglect and break the IT systems security policy. Separation of duty dictates that important tasks/functions should be performed by two or more employees. line of products rotation states that there should be rotation of employees in important positions.NETWORK HARDENINGFor each layer of security, we will ensure they are foot ra ce the most up-to-date software and operating systems, and that the devices are configured properly. security department ZONESIntrusion Prevention (IPS) devices are responsible for detecting and blocking penetrations and attacks conducted by intruders and malicious malware applications. We recommend an IPS be installed in the network path between potential threat sources and sensitive IT system resources. Attacks through encrypted SSL sessions are a potential vulnerability so we recommend decrypting the sessions prior to it reaching the IPS device in order to inspect unencrypted packets.The IPS will be properly optimized and monitored to catch attackers that have slipped past the first defense (firewall/router). Internal networks will not have direct access to the Internet so a Trojan sent to a users workstation through a phishing attack would not allow the intruder to connect to the external network. Internet services are available for internal users only through company netmail and HTTP Proxy servers.ENABLE SECURE NETWORK ACCESSWe will install a VPN that is configured to allow encrypted communication to our network from the outside. Utilizing two-factor authentication, ensuring the integrity of the users do the request. This is external-facing to our network and allows users to tunnel into our LAN from the outside once the appropriate measures are taken to secure access.SEGMENTED DMZthither will be a front-end firewall for the external traffic and a back-end firewall for the internal traffic. Firewall rules will be optimized and tightened on all cosmosly available systems to allow traffic to only the necessary ports and services living within the DMZ. Firewall rules have been created to only allow the source IP addresses and port to the specific servers and proxies have been added in the network from which administrators are allowed access to the systems. Systems within different VLANs (with a layer 3 switches) have been configured to help isolate and r espond to incidents if a server in the DMZ is compromised. Authentication on the LAN is required before access to the DMZ is even attempted. This prevents allowing complete control over these systems at any given time.DEVICEINTEGRITYAll hardware and software will be purchased only from the manufacturer or from resellers who are authorized and certified by the equipment manufacturer. Unused physical interfaces on network devices will be shut down. Access lists that allow only those protocols, ports and IP addresses that are required by network users and services are implemented. Everything else is denied. Network device configuration file are protected from unauthorized disclosure. Steps have been taken to avoid plaintext passwords in the configuration files. This has been accomplished by using encryption and/or a salted hash with iteration to protect the confidentiality of passwords in configuration files. Change passwords/keys immediately if the network device configuration file is transmitted in the clear (or is otherwise exposed) maculation containing non-encrypted passwords/keys. insure protocols will be used when transmitting network device configuration files. All unneeded services on network devices must be shut down.Log files will be reviewed regularly to gain an in depth understanding of normal network behavior. Any irregularity will be reported and investigated.SECURE MANAGEMENTOnly secure protocol standards (SSHv2 IKEv2/IPsec TLS v1.0+) will be used when performing remote management of network devices. Default usernames and/or passwords will not be used. The network understructure security policy should define password length and complexity requirements. retread the network infrastructure security policy. This policy identifies who is allowed to log in to network infrastructure devices and who is allowed to configure network devices, and defines a plan for updating network device firmware at scheduled intervals.PORT VULNERABILITES port 25 Is us ed for SMTP (Simple Mail Transfer communications protocol). It uses both tcp and udp protocols. This port used for e-mail routing between mail servers and is susceptible to many known Trojans. We are keeping this port in a closed state. Port 80 Is used for web traffic Hyper Text Transfer Protocol (HTTP). It uses both tcp and udp protocols. Port 80 udp is also used by somegames, like Alien vs Predator. Code Red and Nimda worms also dot via transmission control protocol port 80 (HTTP). Also, a number of trojans/backdoors use these ports. We are keeping this port in a closed state. Port 139 Is used for NetBIOS. NetBIOS is a protocol used for File and Print Sharing under all current versions of Windows. By scorn, when File and Print Sharing is enabled it binds to everything, including TCP/IP (The Internet Protocol), rather than just the local network, meaning your share resources are available over the entire Internet for reading and deletion, unless configured properly.Any machine with NetBIOS enabled and not configured properly should be considered at risk. The best protection is to turn off File and Print Sharing, or block ports 135-139 completely. We will leave this port in an open state but will turn off file and mug sharing capabilities. Port 1900 Is used for SSDP, UPnP. UPnP discovery/SSDP, is a service that runs by default on WinXP, and creates an immediately exploitable security vulnerability for any network-connected system. It is vulnerable to defense of service and buffer overflow attacks. Microsoft SSDP Enables discovery of UPnP devices. We are keeping this port in a closed state. Port 2869 Is IANA registered for ICSLAP. It uses both tcp and udp protocols and is used for Microsoft Internet Connection Firewall (ICF), Internet Connection Sharing (ICS), SSDP Discover Service, Microsoft public Plug and Play (UPnP), and Microsoft Event Notification. We will leave this port in an open state.Port 5357 Is used by Microsoft Network Discovery, and sh ould be filtered for public networks. It uses both tcp and udp protocols. It is also IANA registered for Web Services for Devices (WSD) a network plug-and-play experience that is similar to installing a USB device. WSD allows network-connected IP-based devices to advertise their functionality and offer these services to clients by using the Web Services protocol. WSD communicates over HTTP (TCP port 5357), HTTPS (TCP port 5358), and multicast to UDP port 3702. We will close this port and redirect traffic to HTTPS (TCP port 5358). Port 6839 This port is not associated with any particular services and should be closed unless it is associated and used. Port 7435 This port is not associated with any particular services and should be closed unless it is associated and used. Ports 9100, 9101 and 9102 These TCP ports are is used for printing. Port come 9101 and 9102 are for parallel ports 2 and 3 on the three-port HP Jetdirect external printservers.It is used for network-connected pri nt devices. These ports should remain open to allow print services. in that respect are no listed vulnerabilities associated with these ports. Port 9220 This port is for raw scan to peripherals with IEEE 1284.4 specifications. On three port HP Jetdirects, the scan ports are 9290, 9291, and 9292. It is used for network-connected print devices. This port should remain open to allow print services. There are no listed vulnerabilities associated with this port. Port 9500 TCP Port 9500 may use a defined protocol to communicate depending on the application. In our case we are using port 9500 to access the ISM Server.The ISM Server is used for exchanging backup and recovery information between storage devices. This port should remain open while services are in use. There are no listed vulnerabilities associated with this port. Port 62078 This port is used by iPhone while syncing. The Port used by UPnP for multimedia files sharing, also used for synchroneity iTunes files between device s. Port 62078 has a known vulnerability in that a service named lockdownd sits and listens on the iPhone on port 62078. By connecting to this port and speaking the correct protocol, its possible to spawn a number of different services on an iPhone or iPad. This port should be blocked or closed when service is not required on the device.ReferencesBEST Network Security insurance and Procedures. (n.d.). Retrieved from http//www.ct.gov/best/cwp/view.asp?a=1245&q=253996 Example Security Plan. (2014, November 17). Retrieved from http//www.binomial.com/security_plan/example_security_plan_template.php bent Network Infrastructure Security Recommendations for System Accreditors. (n.d.). Retrieved from https//www.nsa.gov/ia/_files/factsheets/Hardening_Network_Infrastructure_FS.pdf Network Security Policy Best Practices White Paper Cisco. (2005, October 4). Retrieved from http//www.cisco.com/c/en/us/ offer/docs/availability/high-availability/13601-secpol.html Paquet, C. (2013, February 5). S ecurity Policies Network Security Concepts and Policies. Retrieved from http//www.ciscopress.com/articles/article.asp?p=1998559&seqNum=3 SANS Information Security Resources Information Security Policy Templates .