[c-nsp] modify cisco router config with scripting?

[d tbsky]

hi:
   I want to write a script to modify the acl entry for cisco 3725 and
cisco 3750G.
I find now cisco can use ssh pub key authentication to execute
command. but it needs IOS version 15 which my platforms don't support.
I can also use perl cisco module to emulate the cli interaction, but I
think the method seems not very safe.

  are there other ways to do this kind of work? can I use snmpset to
modify acl or use snmpset to run some tclsh script on the
router/switch?

  thanks a lot for your information!!

Regards,
tbskyd