VMware Workstation: Generate a new selfsigned SSL/TLS certificate


the VMware Workstation does not provide a program or script to generate a new pair of key and selfsigned certificate.

If’ve written a batch file which builds a new one. The scripts assumes that the Workstation is installed in the default folder C:\Program Files (x86)\VMware\VMware Workstation and uses the openssl command delivered with the program.

Adjust the Countryname, State, etc. to your own needs. Config is based on the VMware Docs.

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Windows: Renew a machine certificate


in most Active Directory Enviroments the Certificate Enrollment is active which generates and enrolls a certificate for each client. This can be used for Radius authentication or as certificate for an IIS webserver.

Typically the client renews this certificate itself.
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DHCP: dhtest a tool to send customized packets to a DHCP Server


dhtest is a tool to generate DHCP packets and send it to a DHCP server.
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Linux: Regenerate sshd host keys


to generate sshd host keys, for example in case of cloning a virtual linux instance, do the following steps:

Checkout the key file names

root@debdevt:~# grep HostKey /etc/ssh/sshd_config
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key

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