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Linux Time
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Knowledge Base
Disk Utility
Managing Journal Systemd Ubuntu
Feri Setyawan
-
October 9, 2020
Knowledge Base
Monitoring Cisco ASA Firewall With Nagios Web Application
Feri Setyawan
-
August 8, 2020
Email
Reading and Understanding the exim main_log
Feri Setyawan
-
August 4, 2020
Knowledge Base
List of Free E-Commerce
Feri Setyawan
-
June 23, 2020
Knowledge Base
SaaS vs PaaS vs IaaS: What’s The Difference
Feri Setyawan
-
May 6, 2020
How to
Proxmox 6.0 Bug, hung kernel and how to fix it.
Feri Setyawan
-
March 30, 2020
0
We have been running Proxmox 6.0 in some servers and after a few weeks, they were having a hung issue. one-by-one all...
Read more
Disk Utility
How to enable write cache for 3ware Raid controller
Feri Setyawan
-
March 24, 2020
0
You can check the current cache status and then enable or disable it using the 3ware command line utility tw_cli. First lets see how...
Read more
How to
Delete OLD data from Zabbix database
Feri Setyawan
-
March 24, 2020
0
If you are using Zabbix for a long time, then you might notice that the database size of Zabbix is increasing every day. Then...
Read more
Knowledge Base
HTTP/2 Vulnerabilities in Nginx
Feri Setyawan
-
March 24, 2020
0
In August 2019, NGINX Updates Mitigate in many implementations of HTTP/2. NGINX and Cloudflare are aware in this Mandatory case, Fortunately, For...
Read more
Firewall
Ubuntu updates for TCP SACK Panic vulnerabilities
Feri Setyawan
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March 24, 2020
0
14.04 , 16.04 , 18.04 , ESM , Extended Security Maintenance , livepatch , sack panic , Security , TCP Sack Panic , Trusty Tahr Issues have been identified in the way the Linux kernel’s TCP implementation...
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Knowledge Base
Security Advisory – TCP SACK PANIC – Kernel vulnerabilities – CVE-2019-11477, CVE-2019-11478 & CVE-2019-11479
Feri Setyawan
-
March 24, 2020
0
Redhat Ubuntu reference:https://access.redhat.com/security/vulnerabilities/tcpsackhttps://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-11477.htmlhttps://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Primarily Impacted Products Red Hat...
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Knowledge Base
Active-Active vs Active-Passive High Availability Cluster
Feri Setyawan
-
March 24, 2020
0
Overview The two most commonly used high availability (HA) cluster configurations are active-active and active-passive. What’s the difference between...
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Database
Disable MySQL Strict Mode
Feri Setyawan
-
March 24, 2020
0
This is enabled by default, but you can disable it in one of a couple ways.
Read more
Knowledge Base
Bash For Loop Examples
Feri Setyawan
-
March 24, 2020
0
for loop syntax How do I use bash for loop to repeat certain task...
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Knowledge Base
Vim Cheat Sheet
Feri Setyawan
-
March 24, 2020
0
Global :help keyword – open help for keyword:saveas file – save file as:close – close current paneK – open man page for word under the cursor
Read more
Email
The 3 Pillars of Email Authentication: SPF, DKIM, DMARC
Feri Setyawan
-
March 24, 2020
0
If you’re an email marketer or maybe troubleshooting with email issue, you’ve probably heard acronyms like “SPF,”...
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Knowledge Base
March 13, 2019: End-of-Life for All TLS-SNI-01 Validation Support
Feri Setyawan
-
March 24, 2020
0
Let’s Encrypt allows subscribers to validate domain control using any one of a few different validation methods....
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Most Read
Proxmox 5x “e1000 driver hang” fix
How to
Feri Setyawan
-
March 18, 2021
0
Problem: I started to experience proxmox servers going up and down, an intermittent response on the network (SSH),...
Read more
How To Fix “Device eth0 does not seem to be present, delaying initialization” Error on Centos
How to
Feri Setyawan
-
February 24, 2021
0
check network: # ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP...
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Create Blocking Bad Bots Through Apache in WHM/cPanel
How to
Feri Setyawan
-
February 4, 2021
0
we see a lot of traffic from 'bad robots', these bots cause problems such as high server load, server instability and can...
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Tools for load-testing HTTP servers
How to
Feri Setyawan
-
January 21, 2021
0
Knowing how much traffic your web server can handle when under stress is essential for planning future grow of your website or...
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