Is FTP (21/TCP) enabled? Is anonymous FTP login allowed? Is TFTP enabled and not necessary? Is DHCP enabled and not necessary? Is DNS enabled and not necessary? Are unnecessary routing protocols (e.g. BGP, EIGRP, OSPF, RIP, VRRP, GLBP, VTP, DTP) enabled? Are other unnecessary protocols (e.g. echo, finger, chargen) enabled?