|  | # | 
|  | # allow any TCP packets from the same subnet as foo is on through to host | 
|  | # 10.1.1.2 if they are destined for port 6667. | 
|  | # | 
|  | pass in proto tcp from 10.2.2.2/24 to 10.1.1.2/32 port = 6667 | 
|  | # | 
|  | # allow in UDP packets which are NOT from port 53 and are destined for | 
|  | # localhost | 
|  | # | 
|  | pass in proto udp from 10.2.2.2 port != 53 to localhost | 
|  | # | 
|  | # block anything trying to get to X terminal ports, X:0 to X:9 | 
|  | # | 
|  | block in proto tcp from any to any port 5999 >< 6010 | 
|  | # | 
|  | # allow any connections to be made, except to BSD print/r-services | 
|  | # this will also protect syslog. | 
|  | # | 
|  | block in proto tcp/udp all | 
|  | pass in proto tcp/udp from any to any port 512 <> 515 | 
|  | # | 
|  | # allow any connections to be made, except to BSD print/r-services | 
|  | # this will also protect syslog. | 
|  | # | 
|  | pass in proto tcp/udp all | 
|  | block in proto tcp/udp from any to any port 511 >< 516 |