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Usable Firewall Rule Sets
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap. (PriSec)ORCID-id: 0000-0001-9203-0773
2017 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Correct functioning is the most important requirement for any system. Nowadays there are a lot of threats to computer systems that undermine confidence in them and, as a result, force a user to abandon their use. Hence, a system cannot be trusted if there is no proper security provided. Firewalls are an essential component of network security and there is an obvious need for their use.

The level of security provided by a firewall depends on how well it is configured. Thus, to ensure the proper level of network security, it is necessary to have properly configured firewalls. However, setting up the firewall correctly is a very challenging task. These configuration files might be hard to understand even for system administrators. This is due to the fact that these configuration files have a certain structure: the higher the position of a rule in the rule set, the higher priority it has. Challenging problems arise when a new rule is being added to the set, and a proper position, where to place it, needs to be found. Misconfiguration might sooner or later be made and that will lead to an inappropriate system's security. This brings us to the usability problem associated with the configuration of firewalls.

The overall aim of this thesis is to identify existing firewall usability gaps and to mitigate them. To achieve the first part of the objective, we conducted a series of interviews with system administrators. In the interviews, system administrators were asked about the problems they face when dealing with firewalls. After having ascertained that the usability problems exist, we turned to literature to get an understanding on the state-of-the-art of the field and therefore conducted a systematic literature review. This review presents a classification of available solutions and identifies open challenges in this area. To achieve the second part of the objective, we started working on one identified challenge. A set of usability metrics was proposed and mathematically formalized. A strong correlation between our metrics and how system administrators describe usability was identified.

Abstract [en]

Network security is an important aspect that must be taken into account. Firewalls are systems that are used to make sure that authorized network traffic is allowed and unauthorized traffic is prohibited. However, setting up a firewall correctly is a challenging task. Their configuration files might be hard to understand even for system administrators.

The overall aim of this thesis is to identify firewall usability gaps and to mitigate them. To achieve the first part of the objective, we conduct a series of interviews with system administrators. In the interviews, system administrators are asked about the problems they face when dealing with firewalls. After having ascertained that the usability problems exist, we conduct a systematic literature review to get an understanding on the state of the art of the field. This review classifies available solutions and identifies open challenges. To achieve the second part of the objective, a set of usability metrics is proposed and mathematically formalized. A strong correlation between our metrics and how system administrators describe usability is identified.

sted, utgiver, år, opplag, sider
Karlstads universitet, 2017. , s. 11
Serie
Karlstad University Studies, ISSN 1403-8099 ; 2017:40
Emneord [en]
Network Security, Usable Security, Firewall Configuration, Systematic Literature Review, Usability Metrics, User Studies
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-64703ISBN: 978-91-7063-817-6 (tryckt)ISBN: 978-91-7063-912-8 (digital)OAI: oai:DiVA.org:kau-64703DiVA, id: diva2:1150051
Presentation
2017-11-27, 9C 204, Rejmersalen, Karlstad, 13:15 (engelsk)
Opponent
Veileder
Forskningsfinansiär
Knowledge FoundationTilgjengelig fra: 2017-11-08 Laget: 2017-10-17 Sist oppdatert: 2018-01-13bibliografisk kontrollert
Delarbeid
1. Challenges in Managing Firewalls
Åpne denne publikasjonen i ny fane eller vindu >>Challenges in Managing Firewalls
2015 (engelsk)Inngår i: Secure IT Systems: 20th Nordic Conference, NordSec 2015, Stockholm, Sweden, October 19–21, 2015, Proceedings, Springer, 2015, Vol. 9417, s. 191-196Konferansepaper, Publicerat paper (Fagfellevurdert)
sted, utgiver, år, opplag, sider
Springer, 2015
Serie
Lecture Notes in Computer Science, ISSN 0302-9743 ; 9417
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
urn:nbn:se:kau:diva-39073 (URN)10.1007/978-3-319-26502-5_13 (DOI)000374098500013 ()978-3-319-26501-8 (ISBN)
Konferanse
The 20th Nordic Conference on Secure IT Systems, NordSec 2015, Stockholm, Sweden, October 19–21, 2015
Tilgjengelig fra: 2016-01-19 Laget: 2016-01-19 Sist oppdatert: 2018-01-10bibliografisk kontrollert
2. Systematic Literature Review on Usability of Firewall Configuration
Åpne denne publikasjonen i ny fane eller vindu >>Systematic Literature Review on Usability of Firewall Configuration
2018 (engelsk)Inngår i: ACM Computing Surveys, ISSN 0360-0300, E-ISSN 1557-7341, Vol. 50, nr 6, artikkel-id 87Artikkel i tidsskrift (Annet vitenskapelig) Published
Abstract [en]

Firewalls are network security components that handle incoming and outgoing network traffic based on a set of rules. The process of correctly configuring a firewall is complicated and prone to error, and it worsens as the network complexity grows. A poorly configured firewall may result in major security threats; in the case of a network firewall, an organization’s security could be endangered, and in the case of a personal firewall, an individual computer’s security is threatened. A major reason for poorly configured firewalls, as pointed out in the literature, is usability issues. Our aim is to identify existing solutions that help professional and non-professional users to create and manage firewall configuration files, and to analyze the proposals in respect of usability. A systematic literature review with a focus on the usability of firewall configuration is presented in the article. Its main goal is to explore what has already been done in this field. In the primary selection procedure, 1,202 articles were retrieved and then screened. The secondary selection led us to 35 articles carefully chosen for further investigation, of which 14 articles were selected and summarized. As main contributions, we propose a taxonomy of existing solutions as well as a synthesis and in-depth discussion about the state of the art in firewall usability. Among the main findings, we perceived that there is a lack (or even an absence) of usability evaluation or user studies to validate the proposed models. Although all articles are related to the topic of usability, none of them clearly defines it, and only a few actually employ usability design principles and/or guidelines.

sted, utgiver, år, opplag, sider
Association for Computing Machinery (ACM), 2018
HSV kategori
Forskningsprogram
Datavetenskap
Identifikatorer
urn:nbn:se:kau:diva-64701 (URN)10.1145/3130876 (DOI)
Prosjekter
High Quality Networked Services in a Mobile World (HITS)
Forskningsfinansiär
Knowledge Foundation
Tilgjengelig fra: 2017-10-17 Laget: 2017-10-17 Sist oppdatert: 2018-06-27bibliografisk kontrollert
3. Measuring the Usability of Firewall Rule Sets
Åpne denne publikasjonen i ny fane eller vindu >>Measuring the Usability of Firewall Rule Sets
(engelsk)Manuskript (preprint) (Annet vitenskapelig)
HSV kategori
Identifikatorer
urn:nbn:se:kau:diva-64702 (URN)
Tilgjengelig fra: 2017-10-17 Laget: 2017-10-17 Sist oppdatert: 2018-06-27

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