Application-oriented networking
Application-oriented networking (AON) involves network devices designed to aid in computer
to-computer application integration.
Application-oriented networking was popularized by Cisco Systems in response to increasing use of XML messaging (combined with related standards such as XSLT, XPath and XQuery) to link miscellaneous applications, data sources and other computing assets.
Many of the operations required to mediate between applications, or to monitor their transactions, can be built into network devices that are optimized for the purpose.
The rules and policies for performing these operations, also expressed in XML, are specified separately and downloaded as required. Cisco has adopted the AON acronym as the name of a family of products that function in this way.
Sunday, July 19, 2009
Tuesday, July 14, 2009
Networking Tips
Tips :
Computer networks are used to share the data and resources and for the communications. To get the optimized performance, data protection, maintenance, improved reliability and the security, every system administrator and network administrator should know the basic maintenance, troubleshooting and security techniques. Downtime is very dangerous for the critical network business applications and servers. In this article, you will learn some of the best networking tips and by using them you can get the optimized performance from your network.
Security :
A compute network is susceptible to the internet and external security related threats, which includes viruses, spyware, adware, Trojan horses, rootkits, web worms, intruders and hackers. To keep your network secure
Firewall :
Install and configure a software/hardware firewall on your gateway and all other computers in your network. Firewall is used monitor the inbound and outbound traffic and block the unauthorized access and hackers’ attacks.
Antivirus: Install antivirus software such as Norton Antivirus, Trend Micro Office Scan, Panda Antivirus or McAfee and regularly scan your computer with an antivirus program.
Anti spyware :
Install and configure an up-to-dated anti spyware software in your network.
Updated Operating System :
Update your Windows based operating systems with the latest service packs, hot fixes and security patches.
Browser Security :
Raise the level of security of your web browsers.
Connectivity :
Computer networking sometimes considered to be complex and seems to hard to troubleshoot. The connectivity problems occur in the computer network due to the devices conflicts, outdated LAN card’s driver, faulty hardware, faulty cable or connectors and misconfigurations. To troubleshoot the connectivity related issues, you need to perform the following tasks.
Check the LEDs of your LAN card.
Update the driver of your LAN card.
Scan your computer for the viruses and spyware.
Check the UTP/STP cable, the both end of the cable should be properly inserted i.e. one end in the LAN card and one end in the hub/switch or router.
Check the configurations of the LAN card.
PING the destination computer and check the status.
If your problem is still not resolved, replace the LAN card and reconfigure it.
Maintenance :
Computer network availability and security is very critical for the businesses. Maintenance include the domain setup, dealing with the internal and external security threats, assigning IP addresses to the computes, enabling/disabling network services like DHCP, FTP SMTP, SNMP, taking data backup, adding/removing users, troubleshooting the software/hardware, configuring the firewall and implementing the security in the overall IT infrastructure. To perform the maintenance related tasks in your compute network, you need the perfect tools.
Troubleshooting :
You can troubleshoot the computer network related problems by using the right tools and techniques. Be default, Windows based operating systems offer the TCP/IP stack, which contains the troubleshooting and diagnostic utilities such as PING, IPCONFIG, Hostname, ARP, Telnet, NSLOOKUP, Tracert and many others. Pinging a network computer is the first troubleshooting step as it checks the connectivity with the destination computer. Additionally, you can use the other troubleshooting tools such as Ethereal, IP Sniffer, LanGuard, Packeteer and many others. These tools help to diagnose the cause of the problem and troubleshoot them.
Performance :
To get the optimized performance from your computer network, you need to perform the following actions on every computer of your network.
Use System Tools :
Delete Unnecessary Files
Update Device Drivers
Update BIOS
Uninstall Unused Programs
Update Operating System
Wireless Networking Security Tips
The following tips are very helpful in securing your wireless computer network.
Change the Default SSID
Change the Default Administrator’s password
Disable SSID broadcast.
Enable Mac Address Filtering
Assign Static IP address to the Network devices and computers.
Turn on and configure the firewall on every computer in your network.
Enable IPSec, SSL, Encryption, WPA and WPE according to your security requirements.
Computer networks are used to share the data and resources and for the communications. To get the optimized performance, data protection, maintenance, improved reliability and the security, every system administrator and network administrator should know the basic maintenance, troubleshooting and security techniques. Downtime is very dangerous for the critical network business applications and servers. In this article, you will learn some of the best networking tips and by using them you can get the optimized performance from your network.
Security :
A compute network is susceptible to the internet and external security related threats, which includes viruses, spyware, adware, Trojan horses, rootkits, web worms, intruders and hackers. To keep your network secure
Firewall :
Install and configure a software/hardware firewall on your gateway and all other computers in your network. Firewall is used monitor the inbound and outbound traffic and block the unauthorized access and hackers’ attacks.
Antivirus: Install antivirus software such as Norton Antivirus, Trend Micro Office Scan, Panda Antivirus or McAfee and regularly scan your computer with an antivirus program.
Anti spyware :
Install and configure an up-to-dated anti spyware software in your network.
Updated Operating System :
Update your Windows based operating systems with the latest service packs, hot fixes and security patches.
Browser Security :
Raise the level of security of your web browsers.
Connectivity :
Computer networking sometimes considered to be complex and seems to hard to troubleshoot. The connectivity problems occur in the computer network due to the devices conflicts, outdated LAN card’s driver, faulty hardware, faulty cable or connectors and misconfigurations. To troubleshoot the connectivity related issues, you need to perform the following tasks.
Check the LEDs of your LAN card.
Update the driver of your LAN card.
Scan your computer for the viruses and spyware.
Check the UTP/STP cable, the both end of the cable should be properly inserted i.e. one end in the LAN card and one end in the hub/switch or router.
Check the configurations of the LAN card.
PING the destination computer and check the status.
If your problem is still not resolved, replace the LAN card and reconfigure it.
Maintenance :
Computer network availability and security is very critical for the businesses. Maintenance include the domain setup, dealing with the internal and external security threats, assigning IP addresses to the computes, enabling/disabling network services like DHCP, FTP SMTP, SNMP, taking data backup, adding/removing users, troubleshooting the software/hardware, configuring the firewall and implementing the security in the overall IT infrastructure. To perform the maintenance related tasks in your compute network, you need the perfect tools.
Troubleshooting :
You can troubleshoot the computer network related problems by using the right tools and techniques. Be default, Windows based operating systems offer the TCP/IP stack, which contains the troubleshooting and diagnostic utilities such as PING, IPCONFIG, Hostname, ARP, Telnet, NSLOOKUP, Tracert and many others. Pinging a network computer is the first troubleshooting step as it checks the connectivity with the destination computer. Additionally, you can use the other troubleshooting tools such as Ethereal, IP Sniffer, LanGuard, Packeteer and many others. These tools help to diagnose the cause of the problem and troubleshoot them.
Performance :
To get the optimized performance from your computer network, you need to perform the following actions on every computer of your network.
Use System Tools :
Delete Unnecessary Files
Update Device Drivers
Update BIOS
Uninstall Unused Programs
Update Operating System
Wireless Networking Security Tips
The following tips are very helpful in securing your wireless computer network.
Change the Default SSID
Change the Default Administrator’s password
Disable SSID broadcast.
Enable Mac Address Filtering
Assign Static IP address to the Network devices and computers.
Turn on and configure the firewall on every computer in your network.
Enable IPSec, SSL, Encryption, WPA and WPE according to your security requirements.
Networking hardware
Networking hardware
Networking hardware typically refers to equipment facilitating the use of a computer network. Typically, this includes routers, switches, hubs, gateways, access points, network interface cards, Networking cables, network bridges, modems, ISDN adapters, firewalls and other related hardware.
The most common kind of networking hardware today is copper-based Ethernet adapters, helped largely by its standard inclusion on most modern computer systems. Wireless networking has become increasingly popular, however, especially for portable and handheld devices.
Other hardware prevalent within computer networking is datacenter equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email etc) as well as other specific network devices such as content delivery.
Other diverse devices which may be considered Networking hardware include mobile phones, PDAs and even modern coffee machines. As technology grows and IP-based networks are integrated into building infrastructure and household utilities, network hardware becomes an ambiguous statement owing to the increasing number of 'network capable' endpoints.
Networking hardware typically refers to equipment facilitating the use of a computer network. Typically, this includes routers, switches, hubs, gateways, access points, network interface cards, Networking cables, network bridges, modems, ISDN adapters, firewalls and other related hardware.
The most common kind of networking hardware today is copper-based Ethernet adapters, helped largely by its standard inclusion on most modern computer systems. Wireless networking has become increasingly popular, however, especially for portable and handheld devices.
Other hardware prevalent within computer networking is datacenter equipment (such as file servers, database servers and storage areas), network services (such as DNS, DHCP, email etc) as well as other specific network devices such as content delivery.
Other diverse devices which may be considered Networking hardware include mobile phones, PDAs and even modern coffee machines. As technology grows and IP-based networks are integrated into building infrastructure and household utilities, network hardware becomes an ambiguous statement owing to the increasing number of 'network capable' endpoints.
Introduction to Firewall
INTRODUCTINO TO FIREWALL
Firewall is a first line of defense and protective barrier between your network and the outer world. It can be a software or hardware and it is configured and attached with the gateway computer. It encrypts, filters, monitors, permits or denies all the network traffic. A system without the implementation of the firewall can easily be attacked by the viruses, hackers, intruders, unauthorized access and other internal and external threats. It regulates the traffic between the computer network and the internet. It protects the resources of the private network from the internal and external threats.
Windows XP Professional has built-in firewall software that allows the users to filter the incoming and outgoing traffic by applying different rules. The rules can be based on the IP addresses of the source and destination, port number, domain names and specific applications and protocols such as FTP, HTTP, Remote desktop, Telnet, SMTP, POP3 and Https etc. A firewall works closely with the router and many routers has the built-in firewall. The common functionalities include packet filtering, application gateway, proxy server and circuit relay.
Firewall Features
The common features of a firewall program include the following.
Packet filtering
Ports blocking and scanning
Web filtering
URL Screening
Web caching
User blocking
Domain blocking
Antivirus
Spam Filtering
Email Scanning
Network Access Rules
Network Address Translation (NAT)
User Authentication
Intrusion Protection
Network Activity Monitoring
Types of Firewall
Firewall can be categorized into the following two major categories.
Software Firewall
There are many software firewall products that are usually installed and configured on the Server computer. The most common software firewall includes Zone Alarm, Wingate, Barracuda spam firewall, Symantec Norton Personal Firewall, McAfee Personal Firewall Plus and Sygate® Personal Firewall PRO.
Hardware Firewall
A hardware firewall is a dedicated device that is usually attached with the gateway computer. Many routers provide have built-in firewall features. It filters the network traffic and blocks the unwanted traffic.
Firewall is a first line of defense and protective barrier between your network and the outer world. It can be a software or hardware and it is configured and attached with the gateway computer. It encrypts, filters, monitors, permits or denies all the network traffic. A system without the implementation of the firewall can easily be attacked by the viruses, hackers, intruders, unauthorized access and other internal and external threats. It regulates the traffic between the computer network and the internet. It protects the resources of the private network from the internal and external threats.
Windows XP Professional has built-in firewall software that allows the users to filter the incoming and outgoing traffic by applying different rules. The rules can be based on the IP addresses of the source and destination, port number, domain names and specific applications and protocols such as FTP, HTTP, Remote desktop, Telnet, SMTP, POP3 and Https etc. A firewall works closely with the router and many routers has the built-in firewall. The common functionalities include packet filtering, application gateway, proxy server and circuit relay.
Firewall Features
The common features of a firewall program include the following.
Packet filtering
Ports blocking and scanning
Web filtering
URL Screening
Web caching
User blocking
Domain blocking
Antivirus
Spam Filtering
Email Scanning
Network Access Rules
Network Address Translation (NAT)
User Authentication
Intrusion Protection
Network Activity Monitoring
Types of Firewall
Firewall can be categorized into the following two major categories.
Software Firewall
There are many software firewall products that are usually installed and configured on the Server computer. The most common software firewall includes Zone Alarm, Wingate, Barracuda spam firewall, Symantec Norton Personal Firewall, McAfee Personal Firewall Plus and Sygate® Personal Firewall PRO.
Hardware Firewall
A hardware firewall is a dedicated device that is usually attached with the gateway computer. Many routers provide have built-in firewall features. It filters the network traffic and blocks the unwanted traffic.
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