Stuff about Linux
Hi,
its possible to catch all DNS host queries to just one IP Address. For example in an open WLAN to redirect a User to a authentication page before he can use the network.
Continue reading DNS: Configure DNS to return the same IP Address for all hostnames
Hi,
the best choice to setup a very tiny dhcp server on linux is the busybox udhcpd DHCP implemention.
root@debdev:~# apt-get install udhcpd
Continue reading Linux: Configure a tiny DHCP Server
Hi,
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
Continue reading Linux: Regenerate sshd host keys
Hi,
these are the steps to build your own CA (Certification Authority) and all requiered certificates for a OpenVPN instance (Client and Server) on Linux.
Define your environment. Always set these variables in the shell before executing openssl commands. Adjust it to your needs.
Continue reading OpenVPN: Built a certification authority from scratch with openssl
Hi,
use the following steps to create a ssh key pair with puttygen and import the public key on a linux hosts.
Start puttygen and generate an 4096 Bit RSA Key.
Set a strong password and save it (D:\temp\private.ppk in this example) at a secure location.
Continue reading Linux: Creating a ssh keypair with puttygen