Friday, November 8, 2019
Every Linux System has three options to clear cache without interrupting any processes or services.
1. Clear PageCache only.
# sync; echo 1 > /proc/sys/vm/drop_caches
2. Clear dentries and inodes.
# sync; echo 2 > /proc/sys/vm/drop_caches
3. Clear PageCache, dentries and inodes.
# sync; echo 3 > /proc/sys/vm/drop_caches
[Read more…]
Friday, November 1, 2019
Image does not exist: https://www.techtalkthai.com/wp-content/uploads/2019/10/Paradise-Ransomware-Decryptor.jpg
Emsisoft ໄດ້ແຈກລ້າ ໂປຣແກຣມຖອດລະຫັດ Paradise Ransomware ທີ່ມີຊື່ແມ່ນ: ‘Paradise’ ໃຫ້ດາວໂຫຼດລ້າ ແລ້ວ
Image does not exist: https://www.techtalkthai.com/wp-content/uploads/2019/10/Paradise-Ransomware-Extension.jpg
ສຳລັບວິທີການແຄຣັກຫາກະແຈເຂົ້າລະຫັດຜູ້ໃຊ້ງານຈະຕ້ອງໃຊ້ 1 ຄູ່ຂອງໄຟລ໌ທີ່ຖືກເຂົ້າລະຫັດ ແລະ ໄຟລ໌ທີ່ປົກກະຕິທີ່ມີຂະໜາດໃຫຍ່ກວ່າ 3KB ເຊັ່ນ ໄຟລ໌ຮູບພາບທີ່ເຮົາດາວໂຫຼດມາຈາກອິນເຕີເນັດ (ຂັ້ນຕອນຕາມພາບດ້ານເທິງ) ຫຼັງຈາກ Bruteforcer ເຮັດວຽກສຳເລັດແລ້ວກໍຈະເຂົ້າສູ່ໜ້າ Decryptor ໃຫ້ໃຊ້ກະແຈທີ່ໄດ້ມາໄປຖອດລະຫັດຕໍ່ໄປ
[Read more…]
Tuesday, October 15, 2019
Image does not exist: https://www.bleepstatic.com/images/news/ransomware/decryptors/n/nemty/nemty-decrypted-files.jpg
ຜູ້ຊ່ຽວຊານຈາກ Tesorion ໄດ້ສ້າງເຄື່ອງມີຖອດລະຫັດ Ramsomware ທີ່ມີຊື່ Nemty ອອກມາໃຫ້ຟຣີ ຖ້າທ່ານໃດມີບັນຫາກັບ Nemty Ransomware ກໍ່ສາມາດຕິດຕໍ່ຫາທີມ Tesorion CSIRT ເພື່ອຂໍເຄື່ອງມືດັ່ງກ່າວ
Wednesday, September 25, 2019
IPtables Rules
Saving Rules
Debian Based
netfilter-persistent save
RedHat Based
service iptables save
To Stop / Start / Restart the Firewall,
If you are using RHEL / CentOS / Fedora Linux, the enter the following command.
# service iptables stop
# service iptables start
# service iptables restart
List out all of the active iptables rules with verbose
iptables -n -L -v
List out all of the active iptables rules with numeric lines and verbose
iptables -n -L -v –line-numbers
Print out all of the active iptables rules
iptables -S
List Rules as Tables for INPUT chain
iptables -L INPUT
Print all of the rule specifications in the INPUT chain
iptables -S INPUT
Show Packet Counts and Aggregate Size
iptables -L INPUT -v
To display INPUT or OUTPUT chain rules with numeric lines and verbose
iptables -L INPUT -n -v
iptables -L OUTPUT -n -v --line-numbers
Delete Rule by Chain and Number
iptables -D INPUT 10
Delete Rule by Specification
iptables -D INPUT -m conntrack --ctstate INVALID -j DROP
Flush All Rules, Delete All Chains, and Accept All
iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -t nat -F
iptables -t mangle -F
iptables -F
iptables -X
Flush All Chains
iptables -F
Flush a Single Chain
iptables -F INPUT
[Read more…]
Tuesday, September 24, 2019