Match Address for root login

# vi /etc/ssh/sshd_config
Match Address 127.0.0.1
 PermitRootLogin yes

REF: http://blog.dhampir.no/content/ssh-how-to-permit-root-login-only-from-local-network-ip

install m:tier thin client

0) Download the thin client python code:

http://www.mtier.org/products/thin-client/

1) install from pkg_add: gtk+3 , python3.

2) install from src: pycairo, pygobject .

PYTHON=python3.2 ./configure

(http://stackoverflow.com/questions/7065310/how-to-install-pygobject-with-python-3-support)

Makefile err may need to be corrected manually.

3) modify /etc/X11/xinit/xinitrc for startx automatically.

p.s. *.pc files for pkg-config  need to be linked to /usr/lib/pkg-config .

(http://people.freedesktop.org/~dbn/pkg-config-guide.html)

snmpd setup (renewed)

1) edit /etc/snmpd.conf and modify listen_addr
2) enable snmpd in /etc/rc.conf on startup
3) apply access control via /etc/pf.conf

Reverse ftp-proxy setup

use ftp-proxy -R internal.server.ip -D7 -v can easily setup a reverse FTP proxy on OpenBSD.

Remember to allow packet forwarding in sysctl.conf, and also turn on the ftp-proxy anchor in pf.conf.

OpenBSD on USB drive with boot loader

if you install OpenBSD on a USB drive but cannot boot from it, you may try install GAG boot loader into the MBR. Remember to make your USB drive the first boot disk because GAG can only install to the first drive!

running scim input method with built-in fvwm

1) edit ~/.xsession
export LC_CTYPE=en_US.UTF-8
export XMODIFIERS=@im=scim
export GTK_IM_MODULE="scim"
scim -d&
/usr/X11R6/bin/xterm &
exec dbus-launch /usr/X11R6/bin/fvwm

2) Exit and login again via xdm.

install OpenBSD on USB drive

1) if you want to keep a FAT partition for using on Windows, make the FAT partition the first one, otherwise Windows cannot read it.

2) Install OpenBSD on the selected USB drive as the normal installation process. Remember to make the OpenBSD MBR active, or use tools such as Linux GParted to flag it as boot.

3) Soft update set in /etc/fstab could make I/O much faster: rw,softdep.

REFERENCE:
http://openbsd.org/faq/faq14.html#flashmemLive
http://openbsd.org/faq/faq14.html#flashmemBoot
http://openbsd.org/faq/faq14.html#SoftUpdates