1. A system having more than one network connection. An example could be a private network within your home, where one system also has a dial-up line. Contrast: The word dual-homed could refer to a router, but is usually used to clarify that the system has multiple network connection, but it NOT supposed to provide briding/routing/interconnection services between them. Dual-home systems are a prime target of hackers because when they are subverted, they provide a prime way to compromise networks. Examples: elliptic curves (ANSI x962, IEEE P1363)[5] Elliptic curves have been found useful for public key cryptography. Contrast: An elliptic curve key of roughly 160-bits is equivalent in security to a RSA or DH key of 1024-bits. Elliptic curve systems are dramatically faster than RSA or DH, which makes them useful in smart-card applications that have anemic CPUs. Certicom (the owner of many elliptic curve patents) recommends a public-key size of roughly twice the size of the symmetric-key to provide equivalent security. Point: While elliptic curves have many advantages (size, speed) over other techniques, they are a lot newer and therefore not trusted. From Hacking-Lexicon