Graceful termination of security-violation client connections in a network protection system (NPS)
US11228607B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Apr 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/10
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network protection system (NPS) is augmented to provide additional functionality—preferably within the SSL/TLS connection at the OSI presentation layer—to enable efficient management and handling of security-violating client connections. When the NPS determines to suspend a suspect application client connection, the NPS modifies the request (the TLS encrypted packet) at a random offset to include a random byte value. When the modified request is then received at the server, a TLS decryption error occurs. In response, the server drops the request gracefully and, in particular, a termination response is returned from the server to the NPS, which then passes the termination response back to the requesting client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.