• License
• Support
• Upgrading The Firmware
• Changelog
• Cisco / SES Button
• DNS, DHCP & Dnsmasq
• Kai
• LED Command
• NVRAM
• STA, WDS & WET Configurations
• Syslog
• Building The Firmware

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Click to read the The GNU General Public License

• Avoid upgrading over a wireless connection since they can drop out.
• If you're using DHCP on your computer, renew the lease early or reboot your computer to make sure it doesn't try to renew (and possibly unbind) in the middle of the upgrade. In Windows, you can renew the lease by running "ipconfig /renew".
• Do not hit stop, or navigate away from the upgrade page. Do not reboot, or unplug the router. Do not do anything to interrupt the upgrade or you may end up with a dead brick.
• It will take a few minutes for the firmware to upload. Upload progress bars are based on time, not the amount of data uploaded so don't worry if it goes past 100% and loops back again, or if it doesn't reach 100% at all.
• Once the upgrade is finished, you will see a page indicating the result and then router will reboot on its own. If the page appears broken or empty, wait for one minute, make sure the router doesn't have a flashing diag or power light, then load http://192.168.1.1/ manually.
• If you upgraded from a different firmware, erase any left over settings and restore the defaults by going to Administration:Factory Defaults and choosing Clear NVRAM. Manually re-enter the settings, do not use the Restore feature.

• Dropbear upgraded to 0.47.
• sshd now stops immediately when disabled from the GUI.
• Remote sshd and remote http access can now be enabled separately.
• Misc cleanup of sshd related code.
• Fixed tz-set timezone not being used in some cases. This is now written in /etc/TZ.
• Fixed telnet-launched shell not loading profiles.
• Device list now also linked to OUI search.

• Fixed /usr/sbin/ missing from ash's default PATH.

• Fixed SSHD remote port wasn't saved.
• Afterburner setting removed (it wasn't supposed to be there and doesn't really do anything).

• Dropbear added thanks to Ewrt project and Thibor.
• WOL support added thanks to qwerty.
• BSSID in site survey is now linked to the OUI search in ieee.org.
• Some QoS adjustments. ACK and ICMP packets can now be prioritized. Preset ports re-enabled, added a generic range of low ports and high ports. The Low priory setting is now usable and unclassified traffic is now placed in between Medium and Low rates.
• Dnsmasq updated to 2.26.
• Various GUI cleanups.

echo "#!/sbin/reboot" > /tmp/ses_button
chmod +x /tmp/ses_button

echo "#!/bin/sh
killall telnetd || telnetd" > /tmp/ses_button
chmod +x /tmp/ses_button

By default all DNS requests are handled by Dnsmasq (192.168.1.1). Dnsmasq then forwards the requests to the proper DNS servers and caches the results. This is also how the names entered in the Static DHCP/Domain Name page are able to work. You can disable this behavior by disabling "Use Dnsmasq for DNS" in the Basic Setup page.

Dnsmasq does not give sequentially ordered IP addresses. The addresses are calculated based on your computer's MAC address and "a variable." This is normal and your computers will still get an address within the range you defined. It's just a little different from the way the original Linksys firmware worked.

For those who want the details, it's calculated using something like [lease_start + [[mac_hash + variable] % lease_max]]. The "variable" changes whenever Dnsmasq sees a conflict.

The lease table is cleared when the router is upgraded, unplugged, rebooted, and in situations where a config change requires a reboot. If your computer is already connected when this happens, it will remain connected but will not be in the lease table until the next time it tries to renew.

led <white/amber/dmz/diag/wl> <on/off> [...]

led white on -- white Cisco logo
led diag on -- flashes the power light on my v4.

led wh on am on wl of -- turn on the white and amber leds, and turn off the wlan led

#!/bin/sh
while true; do
  led wh on am of
  usleep 200000
  led wh of am on
  usleep 200000
done

#!/bin/sh
I=`nvram get wl0_ifname`
while sleep 1; do
  if [ "`wl assoclist`" != "" ]; then
    XFER=`ifconfig $I|grep bytes`
    if [ "$XFER" != "$PXFER" ]; then
      LED="am on wh on"
      PXFER=$XFER
    else
      LED="am on wh of"
    fi
  else
    LED="am of wh of"
  fi
  if [ "$LED" != "$PLED" ]; then
    led $LED
    PLED=$LED
  fi
done

• 0 (zero) usually means off, and 1 (one) usually means on.
• To set an nvram variable, use telnet or click the Administration tab, then the Run Command button. Use the following format: "nvram set key=value". Ex: "nvram set capfix=1".
• To remove an nvram variable and use the default setting, use "nvram unset key". Ex: "nvram unset capfix".
• To get a list of all the nvram settings, use "nvram show".
• To permanently save the changes, use "nvram commit".
• A reboot may be needed before some changes go into effect.

1. Install a syslog daemon on your computer like Kiwi Syslog Daemon or WallWatcher for Windows.
2. Go to Administration, Log, then enter your computer's IP address.

• ftp://ftp.linksys.com/opensourcecode/wrt54gl/4.30.1-DE/WRT54GL_v4.30.1_DE.tgz (~180MB)
• HyperWRT_G_tofu##s.tar.bz2

• Extract Linksys' source code.
  
• Link, copy or move tools/brcm to /opt/brcm.
• Add /opt/brcm/hndtools-mipsel-linux and /opt/brcm/hndtools-mipsel-uclibc to your PATH.
• Remove the existing busybox, udhcpd, dnsmasq, ntpclient, and iptables directory. They will be replaced.
• Extract the tofu source code into release/ and overwrite the existing files.

Run "make menuconfig" from release/src/router/busybox/ and release/src/router/. You don't have to change anything here since the default options are ok, but you should still run both and save the settings.

Go to release/src/ and run make.