This is the result:
$ python poc.py --ip 192.168.200.253
probably not vulnerable (error: [Errno 111] Connection refused)

With stock official Firmware ver. 1.01.58 and with Version 0.1 and 0.2 of Neptune354 http://wiki.techesolution.com. Pay attention at the Hardware revision because Linksys made two type of WAG354G. Mine is of course V2.