OpenWrt

See also Single board computers

At home I use this router from Newegg ($66)

BUFFALO WZR-HP-G300NH 802.11b/g/n Nfiniti Wireless High Power Gigabit Router up to 300Mbps/ Open Source DD-WRT Support

I just got a BUFFALO WZR-HP-G300NH2 to use at work as a firewall.

I have also used the classic Linksys WRT54G routers and a RouterBoard with OpenWRT.

Buffalo notes

I have one minor problem, it won't start OpenVPN for me after reboots, I worked around this by simply adding a line to start it in /etc/rc.local

openvpn /etc/openvpn/alseageo.conf &

Interesting things about this router:

1. It has a USB port to which you can connect an external drive.
2. It has an internal TTL level serial port. Have not tried it yet.
3. It has some buttons that you can access programmatically.
4. It has some LEDs that you can control

There is bug in the WZR-HP-G300NH where it holds onto a WAN IP address even when the cable modem is swapped out. See the end of this page. http://wiki.openwrt.org/toh/buffalo/wzr-hp-g300h#supported.versions

Which version?

G300NH has an Atheros AR9132 SoC OpenWRT page

G300NH2 has an Atheros AR7242 OpenWRT page

They are both MIPS processors

3/8/2012 I used this image: http://downloads.openwrt.org/backfire/10.03.1/ar71xx/openwrt-ar71xx-wzr-hp-g300nh-squashfs-tftp.bin

4/24/2013 I grabbed the nh2 image and that was a big mistake, I bricked my Buffalo. Now I have to try to unbrick the device with this one. http://downloads.openwrt.org/attitude_adjustment/12.09-rc2/ar71xx/generic/openwrt-ar71xx-generic-wzr-hp-g300nh-squashfs-tftp.bin

http://g300nh.blogspot.com/2010/06/firmware-flash-and-brick-recovery.html

10/26/2014 Installing 14.07 aka Barrier Breaker.

Set up

FAQ page: http://wiki.openwrt.org/Faq

Configuration page: http://wiki.openwrt.org/OpenWrtDocs/KamikazeConfiguration

Services running

• dropbear (ssh) server
• httpd server
• telnet server
• dhcp client
• dnsmasq (dns cache, server, dhcp server)

Available tools

iptables (netfilter)

The usual plethora of busybox tools.

       [, [[, arping, ash, awk, awx, basename, bunzip2, bzcat,                 
       cat, chgrp, chmod, chown, chroot, clear, cp, crond, crontab,            
       cut, date, dd, df, dirname, dmesg, du, echo, egrep, env,                
       expr, false, fgrep, find, free, grep, gunzip, gzip, halt,               
       head, hexdump, hostid, httpd, id, ifconfig, init, insmod,               
       ipkg, kill, killall, killall5, klogd, length, less, ln,                 
       lock, logger, logread, ls, lsmod, md5sum, mesg, mkdir,                  
       mkfifo, mknod, mktemp, mount, mv, nc, netmsg, netstat,                  
       nslookup, passwd, pidof, ping, ping6, pivot_root, poweroff,             
       printf, ps, pwd, rdate, reboot, reset, rm, rmdir, rmmod,                
       route, sed, seq, sh, sleep, sort, strings, switch_root,                 
       sync, sysctl, syslogd, tail, tar, tee, telnet, telnetd,                 
       test, time, top, touch, tr, traceroute, true, udhcpc,                   
       umount, uname, uniq, uptime, vconfig, vi, watchdog, wc,                 
       wget, which, xargs, yes, zcat