ADSL Router User Manual

Firewall

The firewall is a kind of software that interrupts the data between the Internet and your computer. It is the TCP/IP equivalent of a security gate at the entrance to your company. All data must pass through it, and the firewall (functions as a security guard) will allow only authorized data to be passed into the LAN.

What the firewall can do? It can:

…deny or permit any packet from passing through explicitly

…distinguish between various interfaces and match on the following fields:

‹source and destination IP address

‹port

To keep track of the performance of IP Filter, a logging device is used. The device supports logging of the TCP/UDP and IP packet headers and the first 129 bytes of the packet (including headers) whenever a packet is successfully passed through or blocked, and whenever a packet matches a rule being setup for suspicious packets.

An example for firewall setup:

This picture shows the most common and easiest way to employ the firewall. Basically, you can install a packet-filtering router at the Internet gateway and then configures the filter rule in the router to block or filter protocols and addresses. The systems behind the router usually have a direct access to the Internet; however some dangerous services such as NIS and NFS are usually blocked.

For the security of your router, set the firewall is an important issue.

Firewall – IP Filtering

This page allows you to specify the IP packet filtering rules to prevent the services accessed from the Internet hosts or limit the Internet access for local hosts.

Choose Disabled to disable the firewall function. Click Enabled to invoke the settings that you set in this web page.

To initiate the IP Filtering, select the Enabled radio button and click Apply.

Select the direction to filter packets: Inbound means the data is transferred from outside onto your computer. Outbound means the data is transferred from your computer onto outside through Internet. Please choose Outbound traffic or Inbound traffic as the direction for filtering packets.

Click Add to add a new IP Filtering rule.

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Siemens SLI-5310-I IAD manual Firewall IP Filtering
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SLI-5310-I IAD, SLI-5310 specifications

The Siemens SLI-5310 and SLI-5310-I Integrated Access Devices (IAD) are advanced telecommunications solutions designed to facilitate efficient connectivity and high-quality voice services over IP networks. These devices stand at the intersection of traditional telephony and modern IP-based communications, offering a robust solution for businesses requiring integrated voice and data services.

One of the main features of the Siemens SLI-5310 is its ability to support multiple communication protocols, making it versatile for various network environments. This device can handle both TDM (Time Division Multiplexing) and VoIP (Voice over Internet Protocol), allowing organizations to transition smoothly from legacy systems to modern IP solutions. The SLI-5310-I variant extends these capabilities further by offering integrated router functionalities, ensuring reliable data transfer alongside voice services.

The SLI-5310 supports a range of interfaces, including analog and digital ports, enabling connection with various telephone types and devices. This flexibility ensures that businesses can leverage their existing telecommunications infrastructure while upgrading to newer technologies. The device is also equipped with advanced echo cancellation and voice compression technologies, improving voice quality and minimizing latency during calls.

In terms of management and monitoring, the Siemens SLI-5310 series comes with a user-friendly interface, which allows administrators to configure and manage settings seamlessly. Built with advanced security features, these IADs protect against potential threats, ensuring that both voice and data communications remain secure. Encryption protocols and support for VPNs (Virtual Private Networks) further enhance the security framework.

In summary, the Siemens SLI-5310 and SLI-5310-I IADs are versatile communications solutions that combine traditional and modern technologies to deliver high-quality voice and data services. With support for multiple interfaces, advanced voice processing capabilities, and robust security measures, these devices cater to the evolving needs of businesses looking for reliable telecommunications solutions. Their ability to integrate seamlessly into existing networks while offering scalability makes them an ideal choice for enterprises aiming to future-proof their communication systems.
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