Abstract: An Access Control List management tool for use in distributed communications networks, compares Access Control Entries for conflicts and optimizes the ACE order by frequency of use, thus by detecting errors in the construction of ACLs and reducing the number, on average, of access entries that must be maintained and processed greatly improves the efficiency of transfers.

Abstract: An Access Control List management tool for use in distributed communications networks, compares Access Control Entries for conflicts and optimizes the ACE order by frequency of use, thus by detecting errors in the construction of ACLs and reducing the number, on average, of access entries that must be maintained and processed greatly improves the efficiency of transfers.

Abstract: Distributed compression of a data file can comprise a master server module for breaking the data file into data blocks and for transmitting the data blocks to worker server modules. A first worker server module can compress a first data block using a first compression algorithm, resulting in a first compressed data block. A second worker server module can compress the second data block using a second compression algorithm, resulting in a second compressed data block. The first and second compression algorithms can comprise the same algorithm or different algorithms. An archive module can save the first and second compressed data blocks in an archive file for storage or for transmission over a communication network. The worker server modules also can compress the respective data blocks using multiple compression algorithms and can choose the highest compressed result.

Abstract: A method and system of network access security utilizes identifying the router devices in the network path or other such router devices as may be encountered in protecting a particular portion of the inter-networked system to determine the variation in ACL format and content with each ACL format being then analyzed to determine a paradigm set of packet fields common to all identified ACL formats in which each ACL is then re-written entry by entry to form a paradigm ACL corresponding as nearly as possible to the original ACL. The paradigm ACL for each non-homogenous network device is then merged with each other paradigm ACL to create a common paradigm ACL which can be distributed to each non-homogenous router device to provide common filtering across all of the routers.

Abstract: Protecting a host network from a flood-type denial of service attack by performing statistical analysis of data packets in the network. The statistical analysis comprises comparing evaluated items in the data packets to threshold values and detecting the attack when the statistical items exceed the threshold value. A countermeasure can be initiated to protect the host network from the attack.

Abstract: Distributed compression of a data file can comprise a master server module for breaking the data file into data blocks and for transmitting the data blocks to worker server modules. A first worker server module can compress a first data block using a first compression algorithm, resulting in a first compressed data block. A second worker server module can compress the second data block using a second compression algorithm, resulting in a second compressed data block. The first and second compression algorithms can comprise the same algorithm or different algorithms. An archive module can save the first and second compressed data blocks in an archive file for storage or for transmission over a communication network. The worker server modules also can compress the respective data blocks using multiple compression algorithms and can choose the highest compressed result.