Host name
1 - 66 characters, can be one or more character strings, separated by dots (periods).
- Input must consist of one or more tokens, separated by a period.
- Each token must begin with a letter and have at least 2 characters.
- Every character after the first must be a letter, number or hyphen.
- Wild cards can be specified in two ways:
- Use a single asterisk (*) to indicate that any value is acceptable for a particular token in a particular
position within the host name. For example, *.*.IBM.COM matches USER1.RALEIGH.IBM.COM, but does not match USER1.TCP.RALEIGH.IBM.COM because this name includes an extra token.
- Use a double asterisk (**) to indicate that any number of tokens are acceptable to the left of the asterisks. For example, **.IBM.COM matches USER1.IBM.COM, USER1.RALEIGH.IBM.COM, and USER1.TCP.RALEIGH.IBM.COM.
Both wildcard techniques require that the entire token be wildcarded. For example, *USER.IBM.COM is not a valid use of a wildcard. In this case, use *.IBM.COM instead.
- The name must be fully qualified (it must have a domain name and a host name concatenated together.)
- Host names that are not fully qualified are rejected.
An example is:
mycomputer.city.company.com