Further NMAP testing shows the following: (IPTables 1.2.4/Kernel 2.4.18)
nmap -P0 -sT -p 21,80 IP 21/tcp filtered ftp 80/tcp filtered http nmap -P0 -sF -p 21,80 IP 21/tcp open ftp 80/tcp open http nmap -P0 -sX -p 21,80 IP 21/tcp open ftp 80/tcp open http nmap -P0 -sN -p 21,80 IP 21/tcp open ftp 80/tcp open http
