p0f fingerprinting tool, 114
packet blaster, 77-86
packet builder functions, 45-73
packet creation (see 35
packet header, 13
packet shaping/creating, 35-86
packet sniffing, 3, 193-198, 302, 331, 343
packet_errors, 40
parallel port scan, 223
passive reconnaissance, 4, 5, 193-215
pattern matching, 302-303
payload interface, 47
pcap descriptor, 13
percent character (%), 144-145
point-to-point destination address, 11
pop operations, 260
port list chain, 41
port list functions, 73-74
port scanning, 217-225
Descry sample program for NIDS in, 303-326
Firewalk security tool and, 328-329, 331-336, 342-343, 352-353, 356-372
Knock sample program for port scanning, 239-256
libnids library and, 89
preventing attacks, 293
private keys, 171
PRNG, 164
program flow, 4
promise, 90
protocol decoders, 195-196
protocol tag identifiers, 40
protocol tags, 48-73
protocols, 45-46
pseudorandom number functions, 76
public key cryptography standard number 12 (PKCS12) in, 296-299
public key infrastructure (PKI) and, 164
public keys, 171
Punch sample program using libdnat functions, 77-86
push operations, 260