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	<title>Vasilis Giotsas &#8211; Noise</title>
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		<title>One IP address, many users: detecting CGNAT to reduce collateral effects</title>
		<link>https://noise.getoto.net/2025/10/29/one-ip-address-many-users-detecting-cgnat-to-reduce-collateral-effects/</link>
		
		<dc:creator><![CDATA[Vasilis Giotsas]]></dc:creator>
		<pubDate>Wed, 29 Oct 2025 13:00:00 +0000</pubDate>
				<category><![CDATA[Better Internet]]></category>
		<category><![CDATA[bots]]></category>
		<category><![CDATA[IPv4]]></category>
		<category><![CDATA[Network Services]]></category>
		<category><![CDATA[research]]></category>
		<category><![CDATA[security]]></category>
		<category><![CDATA[waf]]></category>
		<category><![CDATA[web application firewall]]></category>
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					<description><![CDATA[IPv4 scarcity drives widespread use of Carrier-Grade Network Address Translation, a practice in ISPs and mobile networks that places many users behind each IP address, along with their collected activity and volumes of traffic. We introduce the method we’ve developed to detect large-scale IP sharing globally and mitigate the issues that result.]]></description>
		
		
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		<title>A framework for measuring Internet resilience</title>
		<link>https://noise.getoto.net/2025/10/28/a-framework-for-measuring-internet-resilience/</link>
		
		<dc:creator><![CDATA[Vasilis Giotsas]]></dc:creator>
		<pubDate>Tue, 28 Oct 2025 13:00:00 +0000</pubDate>
				<category><![CDATA[Better Internet]]></category>
		<category><![CDATA[Insights]]></category>
		<category><![CDATA[research]]></category>
		<category><![CDATA[Routing Security]]></category>
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					<description><![CDATA[We present a data-driven framework to quantify cross-layer Internet resilience. We also share a list of measurements with which to quantify facets of Internet resilience for geographical areas.]]></description>
		
		
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		<title>“Look, Ma, no probes!” — Characterizing CDNs’ latencies with passive measurement</title>
		<link>https://noise.getoto.net/2021/10/15/look-ma-no-probes-characterizing-cdns-latencies-with-passive-measurement/</link>
		
		<dc:creator><![CDATA[Vasilis Giotsas]]></dc:creator>
		<pubDate>Fri, 15 Oct 2021 13:02:06 +0000</pubDate>
				<category><![CDATA[research]]></category>
		<category><![CDATA[Speed & Reliability]]></category>
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					<description><![CDATA[A challenge with measuring and comparing network performance is the lack of large-scale global performance metrics, like RTT measurements. In this article we describe an alternative approach to active measurements, which accurately predicts network latencies using only passively collected data.]]></description>
		
		
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