rinetd
bindaddress bindport connectaddress connectport
For example:
206.125.69.81 80 10.1.1.2 80
allow pattern
Patterns can contain the following characters: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, . (period), ?, and *. The ? wildcard matches any one character. The * wildcard matches any number of characters, including zero.
For example:
allow 206.125.69.*
This allow rule matches all IP addresses in the 206.125.69 class C domain.