posted to a monitoring StruxureWare Data Center Expert server.

Configuring IP filters

The IP filter has four behaviors when dealing with incoming network packets:

•If there are no filter entries, all packets are accepted by the appliance.

•If there are filter entries, those filter entries are evaluated in order from first to last as they appear in the entry list.

•If a filter matches the corresponding packet data, the network packet is either accepted or rejected by the appliance based on that rule.

•If no filter is matched, the network packet is accepted. If this is not the desired behavior, a "catch-all" filter must be placed at the end of the list, which will block all undesired IP addresses.

As soon as the IP Filter finds a filter that applies to the network packet, it stops evaluating filters and applies the behavior (accept or reject) specified by the current filter entry. Therefore, a rule rejecting all IP addresses must be placed at the end of the list.

Since rules are applied from top-to-bottom, any rules listed after the all-IP filter are ignored. For example, you cannot deny access to all IP addresses, then open up exceptions later in the list. Only the first rule that applies to the IP address is resolved.

WARNING: If you are overly restrictive when setting up your IP filters, it is possible to lock out all web access to the appliance! Exercise caution when setting up your IP filters.

Using CIDR bit-masks

An IP address can contain the CIDR bit-mask syntax for address segments that are specified as "0", for example:

192.168.0.0/16 means all segments and nodes on 192.168. 192.168.0.0/24 means all nodes on 192.168.0.

192.168.0.0/32 means the specific node at 192.168.0.0, and is the same as not specifying a CIDR bit-mask.

Note: To specify all IP addresses, use the syntax "Exclude 0.0.0.0/32".

Warning: Setting the action to "Exclude" can lock out access to the appliance through the Web Client and Advanced View.

NetBotz Appliance User’s Guide

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APC NBRK0450, NBRK0550, NBRK0570 manual Configuring IP filters, Using Cidr bit-masks
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NBRK0550, NBRK0450, NBRK0570 specifications

APC offers a range of high-quality uninterruptible power supplies (UPS) designed to provide reliable power protection. Among these options are the NBRK0550, NBRK0450, and NBRK0570 models, each equipped with advanced features aimed at ensuring continuous power availability for critical devices.

The APC NBRK0550 is built to offer 550 VA / 330 W of output power. It boasts a compact design, making it suitable for both home and small office use. One of its main features includes Automatic Voltage Regulation (AVR), which stabilizes voltage levels to protect connected equipment from surges, spikes, and brownouts. The device includes several outlets for easy connection of multiple devices, and its LCD display provides real-time information about power conditions, battery status, and estimated runtime.

Next in line is the APC NBRK0450 model, which provides 450 VA / 270 W of power. This model is highly efficient and also integrates AVR technology. Its lightweight design facilitates easy movement, making it a preferred choice for users who need portable power solutions. The NBRK0450 offers a user-friendly interface, featuring LED indicators that will alert users about battery charge levels and operational status. The unit ensures reliable performance, ideal for protecting networking equipment, personal computers, and other sensitive electronics.

Lastly, the APC NBRK0570 stands out with its impressive output of 570 VA / 340 W. Like its counterparts, it features AVR technology for enhanced voltage stability. The NBRK0570 is designed for scalability, perfectly accommodating additional devices with its multiple outlets. The model is equipped with a USB port, allowing for easy connectivity with monitoring software for real-time tracking of power usage and battery health. Its advanced battery management system extends battery life and optimizes performance, ensuring that users remain connected during outages.

All three APC models—NBRK0550, NBRK0450, and NBRK0570—are designed with user-friendly interfaces, making them easy to manage. They prioritize essential features such as surge protection, battery health monitoring, and smart shutdown capabilities. The integration of robust technologies in these products ensures a reliable power supply, safeguarding electronic devices against unexpected power failures and contributing to seamless operation in both home and office environments.
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