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2. Fail2ban - Wikipedia

   en.wikipedia.org/wiki/Fail2ban

   Fail2Ban is an intrusion prevention software framework. Written in the Python programming language, it is designed to prevent brute-force attacks . [ 2 ] It is able to run on POSIX systems that have an interface to a packet-control system or firewall installed locally, such as iptables or TCP Wrapper .

3. List of assigned /8 IPv4 address blocks - Wikipedia

   en.wikipedia.org/wiki/List_of_assigned_/8_IPv4...

   Some large / 8 blocks of IPv4 addresses, the former Class A network blocks, are assigned in whole to single organizations or related groups of organizations, either by the Internet Corporation for Assigned Names and Numbers (ICANN), through the Internet Assigned Numbers Authority (IANA), or a regional Internet registry.

4. IP address blocking - Wikipedia

   en.wikipedia.org/wiki/IP_address_blocking

   Unix-like operating systems commonly implement IP address blocking using a TCP wrapper, configured by host access control files /etc/hosts.deny and /etc/hosts.allow.. Both companies and schools offering remote user access use Linux programs such as DenyHosts or Fail2ban for protection from unauthorized access while allowing permitted remote access.

5. DNS blocking - Wikipedia

   en.wikipedia.org/wiki/DNS_blocking

   Instead of returning the valid IP address of a requested site (for example, instead of 198.35.26.96 being returned by the DNS when "www.wikipedia.org" is entered into a browser, [2] if this IP were on a block list, the DNS might reply that the domain is unknown or with a different IP address that directs to a site with a page stating that the ...

6. Block (Internet) - Wikipedia

   en.wikipedia.org/wiki/Block_(Internet)

   Ban evasion can be detected by tracing a user's IP address. If two accounts are using the same IP address, it could be a sign of ban evasion. Also, the use of a VPN, shown by rapid, drastic changes of IP address by the same user in a short period of time, can also be a sign that the user was trying to get around a ban. Ban evasion can also be ...

7. TCP Wrappers - Wikipedia

   en.wikipedia.org/wiki/TCP_Wrappers

   This makes it easy to use for anti-worm scripts, such as DenyHosts or Fail2ban, to add and expire client-blocking rules, when excessive connections and/or many failed login attempts are encountered. While originally written to protect TCP and UDP accepting services, examples of usage to filter on certain ICMP packets exist too, such as 'pingd ...

8. Blacklist (computing) - Wikipedia

   en.wikipedia.org/wiki/Blacklist_(computing)

   Screenshot of a website blocking the creation of content which matches a regular expression term on its blacklist. In computing, a blacklist, disallowlist, blocklist, or denylist is a basic access control mechanism that allows through all elements (email addresses, users, passwords, URLs, IP addresses, domain names, file hashes, etc.), except those explicitly mentioned.

9. Wikipedia : Database reports/Indefinitely blocked IPs

   en.wikipedia.org/wiki/Wikipedia:Database_reports/...

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