26 citations · 123 across the 30 of their papers we have counts for
25 papers · 1 filter
Internet Quality Barometer (IQB): A preliminary data-driven evaluation of the IQB framework
Pavlos Sermpezis, Zeynep Arslan
The Internet Quality Barometer (IQB) framework was designed to transform raw Internet measurement data into actionable insights about Internet quality. Specifically, the framework…
Poster: ChatIYP: Enabling Natural Language Access to the Internet Yellow Pages Database
Vasilis Andritsoudis, Pavlos Sermpezis, Ilias Dimitriadis +1
The Internet Yellow Pages (IYP) aggregates information from multiple sources about Internet routing into a unified, graph-based knowledge base. However, querying it requires knowle…
Poster: The Internet Quality Barometer Framework
Lai Yi Ohlsen, Pavlos Sermpezis, Melissa Newcomb
In this paper, we introduce the Internet Quality Barometer (IQB), a framework aiming to redefine Internet quality beyond ``speed''. IQB (i) defines Internet quality in a user-centr…
Bias in Internet Measurement Platforms
Pavlos Sermpezis, Lars Prehn, Sofia Kostoglou +3
Network operators and researchers frequently use Internet measurement platforms (IMPs), such as RIPE Atlas, RIPE RIS, or RouteViews for, e.g., monitoring network performance, detec…
Benchmarking Graph Neural Networks for Internet Routing Data
Dimitrios Panteleimon Giakatos, Sofia Kostoglou, Pavlos Sermpezis +1
The Internet is composed of networks, called Autonomous Systems (or, ASes), interconnected to each other, thus forming a large graph. While both the AS-graph is known and there is…
Network Friendly Recommendations: Optimizing for Long Viewing Sessions
Theodoros Giannakas, Pavlos Sermpezis, Thrasyvoulos Spyropoulos
Caching algorithms try to predict content popularity, and place the content closer to the users. Additionally, nowadays requests are increasingly driven by recommendation systems (…
Estimating the Impact of BGP Prefix Hijacking
Pavlos Sermpezis, Vasileios Kotronis, Konstantinos Arakadakis +1
BGP prefix hijacking is a critical threat to the resilience and security of communications in the Internet. While several mechanisms have been proposed to prevent, detect or mitiga…
Fairness in Network-Friendly Recommendations
Theodoros Giannakas, Pavlos Sermpezis, Anastasios Giovanidis +2
As mobile traffic is dominated by content services (e.g., video), which typically use recommendation systems, the paradigm of network-friendly recommendations (NFR) has been propos…
Network-aware Recommendations in the Wild: Methodology, Realistic Evaluations, Experiments
Savvas Kastanakis, Pavlos Sermpezis, Vasileios Kotronis +2
Joint caching and recommendation has been recently proposed as a new paradigm for increasing the efficiency of mobile edge caching. Early findings demonstrate significant gains for…
O Peer, Where Art Thou? Uncovering Remote Peering Interconnections at IXPs
George Nomikos, Vasileios Kotronis, Pavlos Sermpezis +6
Internet eXchange Points (IXPs) are Internet hubs that mainly provide the switching infrastructure to interconnect networks and exchange traffic. While the initial goal of IXPs was…
The Order of Things: Position-Aware Network-friendly Recommendations in Long Viewing Sessions
Theodoros Giannakas, Thrasyvoulos Spyropoulos, Pavlos Sermpezis
Caching has recently attracted a lot of attention in the wireless communications community, as a means to cope with the increasing number of users consuming web content from mobile…
Inferring Catchment in Internet Routing
Pavlos Sermpezis, Vasileios Kotronis
BGP is the de-facto Internet routing protocol for exchanging prefix reachability information between Autonomous Systems (AS). It is a dynamic, distributed, path-vector protocol tha…
CABaRet: Leveraging Recommendation Systems for Mobile Edge Caching
Savvas Kastanakis, Pavlos Sermpezis, Vasileios Kotronis +1
Joint caching and recommendation has been recently proposed for increasing the efficiency of mobile edge caching. While previous works assume collaboration between mobile network o…
Show me the Cache: Optimizing Cache-Friendly Recommendations for Sequential Content Access
Theodoros Giannakas, Pavlos Sermpezis, Thrasyvoulos Spyropoulos
Caching has been successfully applied in wired networks, in the context of Content Distribution Networks (CDNs), and is quickly gaining ground for wireless systems. Storing popular…
A Survey among Network Operators on BGP Prefix Hijacking
Pavlos Sermpezis, Vasileios Kotronis, Alberto Dainotti +1
BGP prefix hijacking is a threat to Internet operators and users. Several mechanisms or modifications to BGP that protect the Internet against it have been proposed. However, the r…
ARTEMIS: Neutralizing BGP Hijacking within a Minute
Pavlos Sermpezis, Vasileios Kotronis, Petros Gigis +4
BGP prefix hijacking is a critical threat to Internet organizations and users. Despite the availability of several defense approaches (ranging from RPKI to popular third-party serv…
Re-mapping the Internet: Bring the IXPs into Play
Pavlos Sermpezis, George Nomikos, Xenofontas Dimitropoulos
The Internet topology is of high importance in designing networks and architectures, evaluating performance, and economics. Interconnections between domains (ASes), routers, and po…
ARTEMIS: Real-Time Detection and Automatic Mitigation for BGP Prefix Hijacking
Gavriil Chaviaras, Petros Gigis, Pavlos Sermpezis +1
Prefix hijacking is a common phenomenon in the Internet that often causes routing problems and economic losses. In this demo, we propose ARTEMIS, a tool that enables network admini…
Femto-Caching with Soft Cache Hits: Improving Performance through Recommendation and Delivery of Related Content
Pavlos Sermpezis, Thrasyvoulos Spyropoulos, Luigi Vigneri +1
Pushing popular content to cheap "helper" nodes (e.g., small cells) during off-peak hours has recently been proposed to cope with the increase in mobile data traffic. User requests…
Can SDN Accelerate BGP Convergence? A Performance Analysis of Inter-domain Routing Centralization
Pavlos Sermpezis, Xenofontas Dimitropoulos
The Internet is composed of Autonomous Systems (ASes) or domains, i.e., networks belonging to different administrative entities. Routing between domains/ASes is realised in a distr…
Soft Cache Hits and the Impact of Alternative Content Recommendations on Mobile Edge Caching
Thrasyvoulos Spyropoulos, Pavlos Sermpezis
Caching popular content at the edge of future mobile networks has been widely considered in order to alleviate the impact of the data tsunami on both the access and backhaul networ…
Monitor, Detect, Mitigate: Combating BGP Prefix Hijacking in Real-Time with ARTEMIS
Pavlos Sermpezis, Gavriil Chaviaras, Petros Gigis +1
The Border Gateway Protocol (BGP) is globally used by Autonomous Systems (ASes) to establish route paths for IP prefixes in the Internet. Due to the lack of authentication in BGP,…
Analysing the Effects of Routing Centralization on BGP Convergence Time
Pavlos Sermpezis, Xenofontas Dimitropoulos
Software-defined networking (SDN) has improved the routing functionality in networks like data centers or WANs. Recently, several studies proposed to apply the SDN principles in th…
Effects of Content Popularity on the Performance of Content-Centric Opportunistic Networking: An Analytical Approach and Applications
Pavlos Sermpezis, Thrasyvoulos Spyropoulos
Mobile users are envisioned to exploit direct communication opportunities between their portable devices, in order to enrich the set of services they can access through cellular or…