Howto install snmpd This article describes how to install snmpd an a Linksys WRT54 router running FreifunkFirmware (fff) 1.2 or later.
update your packages Update your lists of available and latest packeges for OpenWRT (whis is the base of fff). To do so use
root@gw2-wrt54g:~# ipkg update
install snmpd with ipkg To install snmp package and all dependencies also use ipkg as follows:
root@gw2-wrt54g:~# ipkg install snmpd
start snmpd at boot time After snmpd and all dependencies (libraries etc…) is installed we need to take care snmpd will be started during the boot process. All we need to do is copy (or move) /etc/init.d/snmpd to e.g. /etc/init.d/S52snmpd. The following command does the trick:
root@gw2-wrt54g:~# mv /etc/init.d/snmpd /etc/init.d/S52snmpd
disable the write community The default setting is to allow snmp access to read and write. The default community string to read is “public” and to write is “private”. If you don't want somebody else just reconfigures your WRT you should change the community string to something not easy to guess or bruteforce and never using it (since it is send in cleartext via the network), or even better just disable the community for writing to your WRT. To do so it is neccessary to delete all lines where the word “private” appears in /etc/snmpd/snmpd.conf. you can do that be hand with an editor of your choice or with the following command line:
root@gw2-wrt54g:~# cat /etc/snmpd/snmpd.conf | grep -v private > /etc/snmpd/snmpd.conf
reboot your device After you did all of the above you should reboot your device to see if everything works. The reboot command makes your WRT reboots. After rebooting your device use ssh to login and check with ps ax | grep snmp if your snmp deamon was started and is running. See sample output below:
root@gw2-wrt54g:~# ps ax | grep snmp 7264 root 1368 S snmpd -Lf /dev/null -p /var/run/snmpd.pid 7266 root 272 S grep snmp root@gw2-wrt54g:~#
Insead of a reboot you can also just start snmpd with:
root@gw2-wrt54g:~# /etc/init.d/S52snmpd start
source : http://blog.sredzki40.de/2006/03/freifunk-firmware-howto-install-snmpd.html
