No wifi adapter found after updating to kernel 5.4.13 in my HP 15-bs 145TU lapotop with ubuntu 18.04

After I updated the kernel of my laptop to 5.4.13, No wifi adapter is found. So I tried the following steps: sudo apt remove bcmwl-kernel-source && sudo apt install git dkms git clone -b extended https://github.com/lwfinger/rtlwifi_new.git sudo dkms add ./rtlwifi_new sudo dkms install rtlwifi-new/0.6 But the fourth step shows the following errors : Kernel preparation…

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High-level overview/help needed for creating small virtual private network

We have the following scenario. Clients ( say 2 Windows machines, 1 Linux ) they are not publicly visible (no public IP) one of the clients running webserver Amazon EC2 access so we can spinup any instance we want (theoreticaly) that is visible from outside What’s needed: clients could access web-server that’s running on another…

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MySQL 8 SHA2 vs. Dovecot SHA256-CRYPT

There’s a long backstory here, but the short story is, I can’t seem to get MySQL 8 and Dovecot to generate the same SHA256 hashes, given the same salt and password. I suspect either a trivial error, or some string encoding problem (or possibly both). Dovecot: $doveadm pw -s SHA256-CRYPT -p apassword {SHA256-CRYPT}$5$h1JEsg1tmnTGS9Ub$Saoi1jr/uddYVD.n5p0hz70H9slnubpG7MQCkzpAiu4 Then, I…

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