ttl
Description
| Specifies a value in the time to live (ttl) field of an IP packet header. This value specifies a timeout for received fragments. |
Synopsis
{block | pass} {in| out} ttl ttl_value address_scope| ttl_value ranges from 0-255. |
| address_scope can be a unique IP address, an address space, or the keywords !, all, me, or any. |