≡ Menu

Openbsd

CentOS Linux: Start / Stop / Restart SSHD Command

I'm a new CentOS Linux server user. How can I start, stop, or restart the OpenSSH (SSHD) server on a CentOS Linux? How can I start SSHD on boot time on a CentOS Linux?
[click to continue…]

OpenBSD: Boot / Install Using PXE (Preboot Execution Environment)

How do I boot and Install OpenBSD operating system using Preboot Execution Environment (PXE)? Do I need to use an existing OpenBSD host to install OpenBSD using PXE?
[click to continue…]

OpenBSD / FreeBSD / NetBSD: PF Firewall List Rules

I can use iptables -L -n command with Linux operating system to list the current firewall rules. How do I list all the current firewall rules under OpenBSD / FreeBSD / NetBSD operating systems? How can I see all pf firewall rules using command line tool?
[click to continue…]

OpnBSD PPTP Client: Install and Create a VPN

I work form home, and I need to login into our corporate network (Microsoft based PPTP server) using a pptp based vpn. How do I configure and setup up a PPTP VPN client under OpenBSD desktop / laptop or router / server operating systems?
[click to continue…]

OpenBSD: Configure Ralink USB IEEE 802.11a/g/n Wireless Network Adapter

I brought a USB 2.0 wireless adapters based on the Ralink RT2700U, RT2800U and RT3000U chipsets. How do I configure and use it under OpenBSD operating systems?
[click to continue…]

OpenBSD: HowTO Install Sets After Installation

How do I install a package set after install under OpenBSD operating systems? I forgot to add a file set comp52.tgz package. How do I install the same after installing the operating system?
[click to continue…]

Linux / Unix ssh-keygen: Create A Host Key File

How do I create a host key file to use with my applications as I can not use system defined /etc/ssh/ssh_host_rsa_key for non-root account under Linux / Unix / Apple OS X / *BSD operating systems?
[click to continue…]

Ubuntu / Debian Linux Server Install Keychain SSH Key Manager For OpenSSH

I do not want to start ssh-agent and ssh-add as described here to manage my ssh keys for password less login. How do I install keychain software to manage my keys running on a Debian or Ubuntu based cloud server?
[click to continue…]

HowTo: Unix / Linux Remove (Delete) OpenSSH Server

I'm new to Linux and my boss told me to remove ssh server as we don't need to provide the remote login and file transfer capabilities of SSH. How do I disable and remove OpenSSH server?
[click to continue…]

OpenSSH: ssh-add / ssh-agent Command Set Maximum Lifetime In Seconds

I'm using a Mac OS X and combination of ssh-agent+ssh-add to adds RSA or DSA identities to the authentication agent. ssh-agent provides me a secure way of storing the private key. However, I'd like to expire identities added to the agent within half an hour. How do I set lifetime of identities added to the agent under Unix / Linux / BSD / Apple OS X operating systems?
[click to continue…]