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Spring MVC Interceptor HandlerInterceptorAdapter, HandlerInterceptor Example — step-by-step DevOps tutorial on Progressive Robot

Spring MVC Interceptor HandlerInterceptorAdapter, HandlerInterceptor Example

URL: https://www.progressiverobot.com/spring-mvc-interceptor-example-handlerinterceptor-handlerinterceptoradapter/ Spring Interceptor are used to intercept client requests and process them. Sometimes we want to intercept the HTTP Request and do some processing before handing it over to the controller handler methods. That's where Spring MVC Interceptor come handy. Spring Interceptor ![spring interceptor, spring mvc interceptor, HandlerInterceptorAdapter, HandlerInterceptor](images/spring-mvc-interceptor-example-handlerinterceptor-handlerinterceptoradapter-section-1.png) Just like we have [Struts2 […]

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Debian 10 — apache-log4j1.2 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — apache-log4j1.2 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 February 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17571 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to restore default repositories in Ubuntu? — step-by-step Linux tutorial on Progressive Robot

How to restore default repositories in Ubuntu?

URL: https://www.progressiverobot.com/restore-default-repositories-in-ubuntu/ Getting errors while updating system repositories or installing new software? You may get errors because your /etc/apt/source.list file is corrupted which contains the repositories details. In this article, We will see how to restore the default repositories in Ubuntu. There are four standard repositories in Ubuntu: Main Universe Restricted Multiverse Restore default repositories […]

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How to Install Graylog for Centralised Log Management on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Graylog for Centralised Log Management on RHEL 8

Centralised log management is essential for maintaining visibility across distributed infrastructure. Graylog is a powerful open-source log management platform that ingests, indexes, and visualises log data from multiple sources in real time. In this tutorial you will install Graylog on a single RHEL 8 server, configure it to receive syslog messages over UDP and TCP, […]

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openSUSE Tumbleweed — libmad0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — libmad0 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2022:10169-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-8373 CVE-2017-8374 Upstream summary: The mad_layer_III function in layer3.c in Underbit MAD libmad 0.15.1b allows remote attackers to cause a denial of service (heap-based buffer […]

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SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — ruby2.1-rubygem-excon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 February 2020 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:2053-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-16779 Upstream summary: In RubyGem excon before 0.71.0, there was a race condition around persistent connections, where a connection which is interrupted (such as by […]

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How To Map User Location with GeoIP and ELK (Elasticsearch, Logstash, and Kibana) — step-by-step Linux tutorial on Progressive Robot

How To Map User Location with GeoIP and ELK (Elasticsearch, Logstash, and Kibana)

IP Geolocation, the process used to determine the physical location of an IP address, can be leveraged for a variety of purposes, such as content personalization and traffic analysis. In this tutorial, we will show you how to create a visual geo-mapping of the IP addresses of your application’s users, by using a GeoIP database with Elasticsearch, Logstash, and Kibana.

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Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-reportlab — vulnerability — patch and remediation guide (ELSA-2020-0201)

🟠 High   ⏱ 15–60 min  Last verified: 3 February 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-0201 Related CVEs: CVE-2019-17626 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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