I have a linksys WRT54GS, with enabled firewall protection, Wireless SSID Broadcast enabled, SES Security Parameters Configured. WPA personal security mode TKIP algorithm. No mac filtering, and no time-day access restrictions. With this my neighbor claims he can get on my network and peek at my files. Is it possible he can get on my network, with all this security enabled. I know when I try to access a security enabled wireless network I need a network key???? Another question, when I enter my router setting I enter the router ip address, then I'm prompted to enter username and password, but as a default all I have to do is enter admin as a password. How do I change my username and password for router access?