DirectAdmin x509: certificate has expired

License check failure See the Debug GuideReason: request failed: Post “https://licensing.directadmin.com/start”: x509: certificate has expired or is not yet valid: current time 2022-10-26T11:51:22+03:00 is after 2021-09-30T14:01:15Z The issue is likely due to server CA root certificates being too old. If you are using Centos 7 which is still supported –…

Getting rid of “kernel:nf_ct_ftp” messages

Sometimes firewall drops nf_ct_ftp messages to console and disturbs the work during increased amount of traffic to FTP port. Message from syslogd@web1 at Jan 27 12:28:40 … kernel:nf_ct_ftp: dropping packetIN= OUT=eth0 SRC=94.23.15.229 DST=36.252.2.15 LEN=53 TOS=0x10 PREC=0x00 TTL=64 ID=62620 DF PROTO=TCP SPT=21 DPT=61868 SEQ=256869292 ACK=3387663834 WINDOW=14600 RES=0x00 ACK PSH FIN URGP=0…

Yubikey

1. What is Yubikey? A YubiKey is a small hardware device that offers two-factor authentication with a simple touch of a button. YubiKeys are built strong enough for the largest enterprises, while remaining simple enough for anyone to use. The YubiKey NEO offers both contact (USB) and contactless (NFC, MIFARE) communications. YubiKeys…