Circuit Caches

Start a TCP circuit cache named tcpcache

                # ipfwcircuit -T tcpcache -F -n 128 -t 4725 -N 100000

        	tcp {
        		ipoffset(>=20) { accept; }
        		not ipoffset(0) || ipdatalen(<20) {
        			reject;
        		}
        		established {
                                call("tcpcache") { accept; }
                                reject;
                        }
        		not tcpflags(syn) { reject; }
        		dstport(http/tcp) {
        			dstaddr(www.windriver.com) {
                                        call("tcpcache" : 1);
                                        accept;
        			}
        			reject;
        		}
        	}