BCD rebuild 0xc000000e

• use rufus create usb win os
• use this usb to start and into fix your computer
• open cmd mode, start fix
• diskpart
• list disk
• select disk 0 (target disk)
• list volume
• select volume 4 (target area, FAT32)
• assign letter Z
• exit
• rd /s /q “Z:\EFI\”
• bootrec /fixboot 
• bcdboot “C:\Windows” /l zh-tw /s Z: /f UEFI
• reboot and start your os on hdd
• if happen access is denied, keep in cmd mode
• format Z: /FS:FAT32 /y
• bcdboot "C:\Windows" /s Z: /f UEFI /l zh-tw
• reboot and start your os on hdd

link: https://thinker-evans.blogspot.com/2020/02/windows-10-uefi-bootloaderwindows-10.html

fail2ban for xrdp

 jail.conf

[rdp]

enabled = true

filter = rdp

action = iptables-multiport[name=rdp, port="3389", protocol=tcp]

logpath = /var/log/xrdp.log

maxretry = 5

filter.d/rdp.conf

[Definition]

failregex = connection received from <HOST>

ignoreregex =

datepattern = %%Y%%m%%d-%%H:%%M:%%S

link: https://stackoverflow.com/questions/65491510/regexp-for-fail2ban-for-xrdp-log

jail.local

[rdp]

enabled  = true

port     = rdp

filter   = rdp

logpath = /var/log/xrdp.log

maxretry = 5

findtime = 1d

bantime  = 1d

iredadmin Internal Server Error

 pip3 install web.py

restart 

centos steam iredmail

del pem to create new

amavisd -c /etc/amavisd/amavisd.conf genrsa /var/lib/dkim/domain.com.pem 1024

chown amavis:amavis /var/lib/dkim/domain.com.pem

chmod 0400 /var/lib/dkim/domain.com.pem

amavisd -c /etc/amavisd/amavisd.conf showkeys

amavisd -c /etc/amavisd/amavisd.conf testkeys

centos 8 to steam

 sudo dnf update

sudo dnf in centos-release-stream

sudo dnf repolist

sudo dnf distro-sync

cat /etc/centos-release

reboot

dnf yum update

link: https://www.cyberciti.biz/howto/upgrade-migrate-from-centos-8-to-centos-stream-conversion/

centos rdp

for centos 8

sudo dnf groupinstall "Server with GUI"

sudo dnf install epel-release

sudo dnf install xrdp

sudo systemctl enable xrdp --now

sudo systemctl status xrdp

sudo firewall-cmd --add-port=3389/tcp --permanent

sudo firewall-cmd --reload

Change Port: /etc/xrpd/xrdp.ini and restat service

link: https://www.myfreax.com/how-to-install-xrdp-on-centos-8/

Centos not support for update/upgrade

 INFO: Error: Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: No URLs in mirrorlist

Run:

• sudo sed -i -e "s|mirrorlist=|#mirrorlist=|g" /etc/yum.repos.d/CentOS-*
• sudo sed -i -e "s|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g" /etc/yum.repos.d/CentOS-*
• link: https://www.cnblogs.com/axinno1/p/15884647.html

or

• sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
• sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*
• link: https://www.tecmint.com/error-failed-to-download-metadata-for-repo-appstream/