How to determine how many computers a hardware firewall can take!

In today's hacker-ridden era, the router firewall function chosen by the university has not been able to well defend the network hacker attacks, choose a better dedicated hardware firewall will become the major universities and colleges to defend against network hacker attacks important means. Hardware firewalls on the market can be described as a variety of different functions, and suitable for campus networks must have the following characteristics of hardware firewalls. The number of user connections is a campus hardware firewall must have the characteristics. At present, the number of major colleges and universities has increased dramatically, in these colleges and universities, although not each a computer, but the number of computers is also considerable, coupled with various types of computer rooms in schools, colleges and universities, the network is very large. Therefore, the hardware firewall needs to drive a large number of computers online. Now there are already many hardware firewalls on the market with no limit on the number of people, which fundamentally solves this problem. Hardware firewalls suitable for campuses should have the ability to connect to 100 megabit networks and gigabit networks. Since the hardware firewall is located in the next layer of the router, nowadays the campus network usually adopts the network of 100 megabytes or more than one gigabit, so we need to connect the hardware firewall with high bandwidth. Hardware firewalls suitable for campuses must have strong anti-hacking capabilities and intrusion monitoring capabilities, which are also the basic characteristics of hardware firewalls. At present, the main means of network hacking attacks are DOS (DDOS) attacks, IP address spoofing, Trojan horse, password word attack, e-mail fraud and so on. These attacks come not only from external networks but also from internal networks. Hardware firewalls suitable for campuses must have the ability to prevent these attacks from both external and internal networks. Hardware firewalls are made up of software and hardware, where the software provides upgrades so that it helps us to patch the vulnerabilities that are constantly being discovered. Since there are some illegal websites accessed within the campus network, in order to prohibit access to illegal websites, the hardware firewall not only needs to have the function of preventing the intranet from accessing illegal websites, but also needs to have the function of monitoring the network, because nowadays there are some undesirable websites appearing every day, and it is only through the monitoring that we can block these illegal websites according to the relevant information. Hardware firewalls suitable for campus networks should be easy for administrators to manage, after all, schools do not hire professional administrators to manage hardware firewalls. This easy to manage the performance of the hardware firewall with the software, the current market mainly with professional software hardware firewall and with Linux or Unix operating system hardware firewall, users can choose according to their own actual situation. For the purchase of any product, we will require cost-effective, so the campus hardware firewall also needs a high performance and more appropriate price to attract users to buy. The above are the basic characteristics of hardware firewalls for campus networks. In view of the uneven quality of hardware firewalls on the market, campus users are difficult to buy the situation, we IT World Network Channel to campus users to introduce several hardware firewalls for reference. Cisco PIX-515E-R-BUN (choice for small campus network) Cisco PIX-515E-R-BUN firewall, which is located in the low-end market, has a high cost-effective. This hardware firewall uses Intel Celeron processor, main frequency of 433MHZ, with 32MB RAM and 16MB flash memory, the maximum number of concurrent connections for 130,000, 170Mpps of data throughput, 100MB of security filtering bandwidth and no limit on the number of users fully explains this hardware firewall is suitable for small campus networks. At the heart of this hardware firewall system is an Adaptive Security Algorithm (ASA)-based protection mechanism against common Denial of Service (DOS) attacks. The Cisco PIX-515E-R-BUN provides support for VPNs, which allows for the secure transmission of data within the campus network. The Cisco PIX-515E-R-BUN provides intrusion monitoring to provide appropriate policies to prevent network hacking in the event of an intrusion. This hardware firewall has a failover bundle feature that will allow a failed Cisco PIX-515E-R-BUN to quickly switch to another backup firewall if there is another backup firewall in the network to prevent network hacking. The Cisco PIX-515E-R-BUN firewall utilizes the Cisco PIX operating system, giving this hardware firewall greatly improved security and the ability to be upgraded online to patch future vulnerabilities. Comments: The overall performance of Cisco PIX-515E-R-BUN is satisfactory if applied in small campus networks, plus the ASA protection mechanism and failover bundling function, which still makes this hardware firewall add a lot of color. Netnifty ES903 (Small and Medium Campus Network Application)Netnifty ES903 is a firewall with ASIC hardware design, which has 200Mpps data throughput and 70MB security filtering bandwidth, and the number of concurrent connections reaches 500,000, which makes the overall performance more satisfactory for small and medium-sized campus networks. This hardware firewall has WEB content filtering function, the campus network administrator can add the website address that needs to be blocked in the no-blocking list, and by setting another legal URL in the WEB manager, it can achieve that when the campus users visit the illegal website, it will automatically connect to the legal address set in the WEB manager. Netnifty ES903 provides intrusion detection function, when the hacker attacks the campus network, the firewall will record the attack information in the system log and warn the hacker. The user authentication function improves the security of the campus network. This hardware firewall provides a comprehensive defense against DoS, port scanning, buffer overflow, brute force attacks, Trojan horses and other attacks. Like other hardware firewalls, Nethub ES903 provides traffic control, VPN, IP address and MAC address binding, etc., so that campus network users can have a more secure network environment. Netnifty ES903 with its dedicated ESOS operating system, both in terms of performance and functionality, this hardware firewall has been greatly utilized. Comments:This hardware firewall is very powerful, and with the ASIC hardware design, there is a great improvement in performance. However, the 70MB security filtering bandwidth is below par. Cisco PIX-525-UR-GE-BUN (Small to Medium Campus Network Option)The Cisco PIX-525-UR-GE-BUN is an enterprise-oriented firewall that also caters to some small to medium-sized campus networks. This hardware firewall uses an Intel Pentium III processor with a main frequency of 600MHZ and is equipped with 256MB of randomized memory and 16MB of flash memory, supporting a maximum of 280,000 concurrent connections, with a network data throughput of 370Mpps and a security filtering bandwidth of 100MB, with no user limitations, making it a strong overall performer that is well suited for Small and medium-sized campus networks. This hardware firewall provides Adaptive Security Algorithms (ASA) for static connection firewall functionality, enabling packet filtering and tracking of source and destination addresses, TCP sequence numbers, port numbers, and TCP flags appended to each packet during data transmission, thus ensuring that the internal campus network is not vulnerable to attacks by unauthorized users. The Cisco PIX-525-UR-GE-BUN supports VPN functionality and can encrypt data transmitted over the campus network to prevent theft by other users. The Cisco PIX-525-UR-GE-BUN provides Network Address Translation (NAT) function, which can save IP address resources and hide the IP address from external networks, providing a strong guarantee for the security of the internal campus network. The Cisco PIX-525-UR-GE-BUN has a Denial of Service Attack Prevention feature that prevents computers within the campus network from being attacked by hackers, and a Java Applet Filtering feature that puts an end to the potential dangers associated with the use of Java by users within the campus network. The email protection feature and URL filtering feature keep campus network users largely safe from email attacks and from accessing illegal sites. The Cisco PIX-525-UR-GE-BUN is also very easy to operate, requiring only six commands to complete the basic security settings, which makes it very convenient for campus networks. Comments:The performance of this hardware firewall is relatively satisfactory, and Cisco's ASA algorithm allows the Cisco PIX-525-UR-GE-BUN to provide a higher level of security for campus users. 370Mpps and 100MB of security filtering bandwidth make this hardware firewall suitable for only small and medium-sized campus networks. Positioned at the lower end of the market, the Cisco PIX-515E-R-BUN firewall offers a high price/performance ratio. This hardware firewall adopts Intel Celeron processor with a main frequency of 433MHZ, 32MB RAM and 16MB flash memory, the maximum number of concurrent connections is 130,000, 170Mpps data throughput, 100MB security filtering bandwidth and no user limitations fully demonstrates that this hardware firewall is suitable for small campus networks. At the heart of this hardware firewall system is an Adaptive Security Algorithm (ASA)-based protection mechanism against common Denial of Service (DOS) attacks. The Cisco PIX-515E-R-BUN provides support for VPNs, which allows for the secure transmission of data within the campus network. The Cisco PIX-515E-R-BUN provides intrusion monitoring, which can provide appropriate policies to prevent network hacking in the event of a hacker attack. This hardware firewall has a failover bundle feature that will allow a failed Cisco PIX-515E-R-BUN to quickly switch to another backup firewall if there is another backup firewall in the network to prevent network hacking. The Cisco PIX-515E-R-BUN firewall utilizes the Cisco PIX operating system, which gives this hardware firewall greatly improved security, and can be upgraded online to patch future vulnerabilities. Comments:The overall performance of Cisco PIX-515E-R-BUN is still satisfactory if it is applied in a small campus network, plus it has ASA protection mechanism and failover bundling function, which still makes this hardware firewall add a lot of color. LX-320 (Medium and Large Campus Network Applications)The LX-320 firewall is a high-performance product with a data throughput of 1056Mbps and a maximum of 1 million concurrent connections, which is a very strong overall performance that can meet the needs of large-scale campus network applications.The LX-320 has AAA authentication access control function that can set up Internet rules to prevent illegal users from logging on the campus internal network. LX-320 has the AAA authentication access control function to set up Internet rules to prevent illegal users from logging into the campus internal network. The URL filtering function prevents users from accessing illegal websites, and the malicious code detection function prevents malicious code attacks such as ActiveX, Java, etc. The IP address and MAC address binding function of the LX-320 prevents the internal IP address from being stolen, and the intrusion defense and alarm function reduces the danger of hacker attacks. The LX-320 can protect internal data by digital signature to prevent hackers from tampering with the data, which is very important for the protection of the homepage of the campus.In addition to these functions, the LX-320 also has VPN function, traffic management, dual-machine backup, VLAN, and NAT network address translation, which are all functions that can be very helpful for some applications of the campus.The LX-320 adopts the special NOS operating system of China Networks. The LX-320 adopts ChinaNet's specialized NOS operating system, which has a friendly WEB GUI interface and is relatively easy to use. Comments:The strong performance of this hardware firewall, coupled with its powerful features and easy-to-use interface, provides a very good defense platform for campus users. RG-WALL 1000 Gigabit Firewall (Large Campus Network Application)As a new generation firewall product of Ruijie, RG-WALL 1000 has extremely good performance. It has 1.8Gbps data throughput and 2 million maximum concurrent connections, VPN throughput of 400Mbps, maximum number of policies of 65,535, MTBF of more than 50,000 hours, and unlimited number of users, which makes the overall performance very strong and suitable for large campus networks. The most important feature of this hardware firewall is that it adopts Ruijie's unique classification algorithm, which makes the RG-WALL 1000 independent of the number of policies and the number of sessions, and does not affect the speed of the campus network after installation. the RG-WALL 1000 handles the reception, classification and forwarding of packets at the core layer, and does not cause bottlenecks in the network traffic. This hardware firewall has an intrusion monitoring function and can determine the way of hacker attacks and provide solutions to prevent hacker attacks.The RG-WALL 1000 does not affect the performance of the firewall when performing intrusion monitoring.The RG-WALL 1000 provides URL filtering function to control campus users' access to illegal sites. It enables IP address and MAC address binding to prevent campus internal network users from changing their IP addresses and carrying out malicious attacks. This hardware firewall has a traffic control function that can allocate reasonable bandwidth to campus users.The RG-WALL 1000 also has HTTP transparent proxy, NAT function and VPN, which can fully meet the needs of the campus network.The RG-WALL 1000 has two 10/100MB ports and two 1000MB ports, and it has four expansion slots for The RG-WALL 1000 has two 10/100MB ports and two 1000MB ports, and has four expansion slots for connecting other modules provided by Ruijie to achieve expansion. This hardware firewall supports Ruijie's special GUI software, which is very convenient to use and easy for campus users to manage. Comments:The overall performance of RG-WALL 1000 is strong, and its unique classification algorithm technology greatly improves the performance of this hardware firewall. This hardware firewall is also very rich in features, can block many attack methods, and can be upgraded through the online software, patching a variety of vulnerabilities, for large and medium-sized colleges and universities, is undoubtedly an excellent choice.