Question about locking down SB51xx

[geoneo111]

Hi guys,

I was trying to do the following commands to lock down my SB5101 but it appears as if the directories/folders after nonvol doesn't exist. I can't get into msg-log or snmp. Any ideas why?

(disable remote telnet)
cd non-vol
cd msg-log
telnet_ipstacks 2

(block all remote updates)
cd \
cd non-vol
cd snmp
max_dload_tries 0
write

(hide your ip)
cd non-vol
cd snmp
hide_ipstack_ifentries true
write