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What are the vulnerabilities of Debian OpenSSL

OpenSSL, as an open source library widely used in secure communications, provides encryption algorithms, keys and certificate management functions. However, there are some known security vulnerabilities in its historical version, some of which are extremely harmful. This article will focus on common vulnerabilities and response measures for OpenSSL in Debian systems. DebianOpenSSL known vulnerabilities: OpenSSL has experienced several serious vulnerabilities, such as: Heart Bleeding Vulnerability (CVE-2014-0160): This vulnerability affects OpenSSL 1.0.1 to 1.0.1f and 1.0.2 to 1.0.2 beta versions. An attacker can use this vulnerability to unauthorized read sensitive information on the server, including encryption keys, etc.

Apr 02, 2025 am 07:30 AM

加密通信

PostgreSQL monitoring method under Debian

This article introduces a variety of methods and tools to monitor PostgreSQL databases under the Debian system, helping you to fully grasp database performance monitoring. 1. Use PostgreSQL to build-in monitoring view PostgreSQL itself provides multiple views for monitoring database activities: pg_stat_activity: displays database activities in real time, including connections, queries, transactions and other information. pg_stat_replication: Monitors replication status, especially suitable for stream replication clusters. pg_stat_database: Provides database statistics, such as database size, transaction commit/rollback times and other key indicators. 2. Use log analysis tool pgBadg

Apr 02, 2025 am 07:27 AM

工具 red

What to do if Tigervnc connection fails on Debian

In Debian system, if the TigervNC connection fails, please follow the following steps to troubleshoot: 1. Check the status of the VNC server First, confirm whether the VNC server is up and running. Use the command ps-ef|grepvnc to view the VNC server process. 2. To confirm the port number, please check whether the port number you are using is correct. TigervNC uses TCP port 5900 n by default (n is the monitor number, for example: display 1 corresponds to port 5901). 3. Firewall settings If a firewall (such as ufw) is enabled, make sure that the VNC port is allowed to pass. Use the following command to open port 5901 (please modify the port number according to your monitor number): s

Apr 02, 2025 am 07:24 AM

How to ensure high availability of MongoDB on Debian

This article describes how to build a highly available MongoDB database on a Debian system. We will explore multiple ways to ensure data security and services continue to operate. Key strategy: ReplicaSet: ReplicaSet: Use replicasets to achieve data redundancy and automatic failover. When a master node fails, the replica set will automatically elect a new master node to ensure the continuous availability of the service. Data backup and recovery: Regularly use the mongodump command to backup the database and formulate effective recovery strategies to deal with the risk of data loss. Monitoring and Alarms: Deploy monitoring tools (such as Prometheus, Grafana) to monitor the running status of MongoDB in real time, and

Apr 02, 2025 am 07:21 AM

mongodb 工具高可用架构数据丢失