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can complicate IP address blocking by making it difficult to block a specific user without blocking many IP addresses (blocks of IP address ranges), thereby creating collateral damage. For websites with low-enough popularity (often intentionally, with explicitly declaring the majority of potential
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Logging the IP address can, for example, monitor if a person has visited the site before, for example, to vote more than once, as well as to monitor their viewing pattern, how long since they performed any activity on the site (and set a time out limit), besides other things.
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and other methods can be used to bypass the blocking of traffic from IP addresses. However, anti-proxy strategies are available. Consumer-grade internet routers can sometimes obtain a new public IP address on-demand from the ISP using
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renewal to circumvent individual IP address blocks. This, however, can be countered by blocking the range of IP addresses from which the internet service provider is assigning new IP addresses, which is usually a shared
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visitors as out-of-scope) the large-scale collateral damage is often tolerable: most of website accesses, for addresses belong to the same IP range, are accesses of persons just having a dynamic IP address, but the same
105:, which is needed to enable devices to communicate with each other. With appropriate software on the host website, the IP address of visitors to the site can be logged and can also be used to determine the visitor's
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and to prevent access by a disruptive address. It can also be used to restrict access to or from a particular geographic area; for example, syndicating content to a specific region through the use of
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for protection from unauthorized access while allowing permitted remote access. This is also useful for allowing remote access to computers. It is also used for
Internet censorship.
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On a website, an IP address block can prevent a disruptive address from access, though a warning and/or account block may be used first. Dynamic allocation of IP addresses by
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indicates, besides other things, the visitor's country. In some cases, requests from or responses to a certain country would be blocked entirely.
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usually reserve the right of their admins to block access at own discretion, enabling them to create collateral damage this way.
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Internet users may circumvent geo-blocking and censorship and protect their personal identity using a
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held that circumventing an address block to access a website is a violation of the
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shows deemed inappropriate. This is especially frequent in places such as
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has been used, for example, to block shows in certain countries, such as
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For information about blocking IP addresses on
Knowledge (XXG), see
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operating systems commonly implement IP address blocking using a
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337:"How cookies track you around the web & how to stop them"
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operating systems). It can be bypassed using methods such as
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Every device connected to the
Internet is assigned a unique
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The John
Marshall Journal of Computer & Information Law
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Both companies and schools offering remote user access use
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IP address blocking is possible on many systems using a
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for "unauthorized access", and is thus punishable by
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419:"[Community] The Trouble with IP Bans"
69:IP address blocking can be implemented with a
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365:"What Is Geo-Blocking and How to Bypass It"
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27:Access restrictions based on IP address
448:"How to: Circumvent Online Censorship"
32:Knowledge (XXG):Blocking IP addresses
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375:from the original on 2023-01-03
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398:Council on Foreign Relations
255:Computer Fraud and Abuse Act
394:"Media Censorship in China"
216:(FSB) about IP blocking of
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212:A letter from the Russian
50:that blocks requests from
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249:(2013), US federal judge
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107:geographical location
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493:Internet security
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282:References
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198:hosts file
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44:IP banning
187:DenyHosts
164:Unix-like
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373:Archived
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369:Avast
183:Linux
130:China
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
