A Domain-Specific Language for Filtering in Application-Level Gateways

Hampus Balldin, Christoph Reichenbach

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

45 Nedladdningar (Pure)

Sammanfattning

Application-level packet filtering is a technique for network access control in which an “application-level gateway” intercepts network packets at the application level (e.g., HTTP, FTP), scans them for security concerns and optionally logs, rewrites or discards them. Existing application-level filters express their filtering rules in general-purpose languages, which limits the correctness guarantees available for them. We present the first declarative language for application-level network filtering, developed at Advenica AB. Our DSL uses security assertions to express properties that packets must have to be allowed through the network (e.g., “IMAP packet contains no executable attachment” or “SQL reply contains only explicitly permitted columns”), along with remedies that either reject or rewrite undesirable packets. We have designed the language around the needs of network filter developers, with a focus on correctness: our language can statically verify several properties of filter programs, such as well-formedness of the outcome, confluence, and termination, with the help of an off-the-shelf SMT solver. Our initial results show that the language can express many typical filtering tasks, closely maps to the application domain, and provides strong correctness guarantees.
Originalspråkengelska
Titel på värdpublikationProceedings of the 19th ACM SIGPLAN International Conference on Generative Programming: Concepts and Experiences
UtgivningsortNew York, NY, USA
FörlagAssociation for Computing Machinery (ACM)
Sidor111–123
ISBN (tryckt)9781450381741
DOI
StatusPublished - 2020 nov.
Evenemang19th ACM SIGPLAN International Conference on Generative Programming: Concepts and Experiences, GPCE 2020 - Virtual, USA
Varaktighet: 2020 nov. 162020 nov. 17

Konferens

Konferens19th ACM SIGPLAN International Conference on Generative Programming: Concepts and Experiences, GPCE 2020
Land/TerritoriumUSA
OrtVirtual
Period2020/11/162020/11/17

Ämnesklassifikation (UKÄ)

  • Datavetenskap (datalogi)

Fingeravtryck

Utforska forskningsämnen för ”A Domain-Specific Language for Filtering in Application-Level Gateways”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här