Annotation of src/etc/pf.os, Revision 1.1
1.1 ! frantzen 1: # $OpenBSD$
! 2: # passive OS fingerprinting
! 3: # -------------------------
! 4: #
! 5: # SYN signatures. Those signatures work for SYN packets only (duh!).
! 6: #
! 7: # (C) Copyright 2000-2003 by Michal Zalewski <lcamtuf@coredump.cx>
! 8: # (C) Copyright 2003 by Mike Frantzen <frantzen@w4g.org>
! 9: #
! 10: # Permission to use, copy, modify, and distribute this software for any
! 11: # purpose with or without fee is hereby granted, provided that the above
! 12: # copyright notice and this permission notice appear in all copies.
! 13: #
! 14: # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 15: # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 16: # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 17: # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 18: # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
! 19: # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
! 20: # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 21: #
! 22: #
! 23: # This fingerprint database is adapted Michal Zalewski's p0f passive
! 24: # operating system package.
! 25: #
! 26: #
! 27: # Each line in this file specifies a single fingerprint. Please read the
! 28: # information below carefully before attempting to append any signatures
! 29: # reported as UNKNOWN to this file to avoid mistakes.
! 30: #
! 31: # We use the following set metrics for fingerprinting:
! 32: #
! 33: # - Window size (WSS) - a highly OS dependent setting used for TCP/IP
! 34: # performance control (max. amount of data to be sent without ACK).
! 35: # Some systems use a fixed value for initial packets. On other
! 36: # systems, it is a multiple of MSS or MTU (MSS+40). In some rare
! 37: # cases, the value is just arbitrary.
! 38: #
! 39: # NEW SIGNATURE: if p0f reported a special value of 'Snn', the number
! 40: # appears to be a multiple of MSS (MSS*nn); a special value of 'Tnn'
! 41: # means it is a multiple of MTU ((MSS+40)*nn). Unless you notice the
! 42: # value of nn is not fixed (unlikely), just copy the Snn or Tnn token
! 43: # literally. If you know this device has a simple stack and a fixed
! 44: # MTU, you can however multiply S value by MSS, or T value by MSS+40,
! 45: # and put it instead of Snn or Tnn.
! 46: #
! 47: # If WSS otherwise looks like a fixed value (for example a multiple
! 48: # of two), or if you can confirm the value is fixed, please quote
! 49: # it literaly. If there's no apparent pattern in WSS chosen, you
! 50: # should consider wildcarding this value.
! 51: #
! 52: # - Overall packet size - a function of all IP and TCP options and bugs.
! 53: #
! 54: # NEW SIGNATURE: Copy this value literally.
! 55: #
! 56: # - Initial TTL - We check the actual TTL of a received packet. It can't
! 57: # be higher than the initial TTL, and also shouldn't be dramatically
! 58: # lower (maximum distance is defined as 40 hops).
! 59: #
! 60: # NEW SIGNATURE: *Never* copy TTL from a p0f-reported signature literally.
! 61: # You need to determine the initial TTL. The best way to do it is to
! 62: # check the documentation for a remote system, or check its settings.
! 63: # A fairly good method is to simply round the observed TTL up to
! 64: # 32, 64, 128, or 255, but it should be noted that some obscure devices
! 65: # might not use round TTLs (in particular, some shoddy appliances use
! 66: # "original" initial TTL settings). If not sure, you can see how many
! 67: # hops you're away from the remote party with traceroute or mtr.
! 68: #
! 69: # - Don't fragment flag (DF) - some modern OSes set this to implement PMTU
! 70: # discovery. Others do not bother.
! 71: #
! 72: # NEW SIGNATURE: Copy this value literally.
! 73: #
! 74: # - Maximum segment size (MSS) - this setting is usually link-dependent. P0f
! 75: # uses it to determine link type of the remote host.
! 76: #
! 77: # NEW SIGNATURE: Always wildcard this value, except for rare cases when
! 78: # you have an appliance with a fixed value, know the system supports only
! 79: # a very limited number of network interface types, or know the system
! 80: # is using a value it pulled out of nowhere. Specific unique MSS
! 81: # can be used to tell Google crawlbots from the rest of the population.
! 82: #
! 83: # - Window scaling (WSCALE) - this feature is used to scale WSS.
! 84: # It extends the size of a TCP/IP window to 32 bits. Some modern
! 85: # systems implement this feature.
! 86: #
! 87: # NEW SIGNATURE: Observe several signatures. Initial WSCALE is often set
! 88: # to zero or other low value. There's usually no need to wildcard this
! 89: # parameter.
! 90: #
! 91: # - Timestamp - some systems that implement timestamps set them to
! 92: # zero in the initial SYN. This case is detected and handled appropriately.
! 93: #
! 94: # - Selective ACK permitted - a flag set by systems that implement
! 95: # selective ACK functionality.
! 96: #
! 97: # - The sequence of TCP all options (MSS, window scaling, selective ACK
! 98: # permitted, timestamp, NOP). Other than the options previously
! 99: # discussed, p0f also checks for timestamp option (a silly
! 100: # extension to broadcast your uptime ;-), NOP options (used for
! 101: # header padding) and sackOK option (selective ACK feature).
! 102: #
! 103: # NEW SIGNATURE: Copy the sequence literally.
! 104: #
! 105: # To wildcard any value (except for initial TTL or TCP options), replace
! 106: # it with '*'. You can also use a modulo operator to match any values
! 107: # that divide by nnn - '%nnn'.
! 108: #
! 109: # Fingerprint entry format:
! 110: #
! 111: # wwww:ttt:D:ss:OOO...:OS:Version:Subtype:Details
! 112: #
! 113: # wwww - window size (can be *, %nnn, Snn or Tnn). The special values
! 114: # "S" and "T" which are a multiple of MSS or a multiple of MTU
! 115: # respectively.
! 116: # ttt - initial TTL
! 117: # D - don't fragment bit (0 - not set, 1 - set)
! 118: # ss - overall SYN packet size
! 119: # OOO - option value and order specification (see below)
! 120: # OS - OS genre (Linux, Solaris, Windows)
! 121: # Version - OS Version (2.0.27 on x86, etc)
! 122: # Subtype - OS subtype or patchlevel (SP3, lo0)
! 123: # details - Generic OS details
! 124: #
! 125: # If OS genre starts with '*', p0f will not show distance, link type
! 126: # and timestamp data. It is useful for userland TCP/IP stacks of
! 127: # network scanners and so on, where many settings are randomized or
! 128: # bogus.
! 129: #
! 130: # If OS genre starts with @, it denotes an approximate hit for a group
! 131: # of operating systems (signature reporting still enabled in this case).
! 132: # Use this feature at the end of this file to catch cases for which
! 133: # you don't have a precise match, but can tell it's Windows or FreeBSD
! 134: # or whatnot by looking at, say, flag layout alone.
! 135: #
! 136: # Option block description is a list of comma or space separated
! 137: # options in the order they appear in the packet:
! 138: #
! 139: # N - NOP option
! 140: # Wnnn - window scaling option, value nnn (or * or %nnn)
! 141: # Mnnn - maximum segment size option, value nnn (or * or %nnn)
! 142: # S - selective ACK OK
! 143: # T - timestamp
! 144: # T0 - timestamp with a zero value
! 145: #
! 146: # To denote no TCP options, use a single '.'.
! 147: #
! 148: # Please report any additions to this file, or any inaccuracies or
! 149: # problems spotted, to the maintainers: lcamtuf@coredump.cx,
! 150: # frantzen@openbsd.org and bugs@openbsd.org with a tcpdump packet
! 151: # capture of the relevant SYN packet(s)
! 152: #
! 153: # WARNING WARNING WARNING
! 154: # -----------------------
! 155: #
! 156: # Do not add a system X as OS Y just because NMAP says so. It is often
! 157: # the case that X is a NAT firewall. While nmap is talking to the
! 158: # device itself, p0f is fingerprinting the guy behind the firewall
! 159: # instead.
! 160: #
! 161: # When in doubt, use common sense, don't add something that looks like
! 162: # a completely different system as Linux or FreeBSD or LinkSys router.
! 163: # Check DNS name, establish a connection to the remote host and look
! 164: # at SYN+ACK - does it look similar?
! 165: #
! 166: # Some users tweak their TCP/IP settings - enable or disable RFC1323
! 167: # functionality, enable or disable timestamps or selective ACK,
! 168: # disable PMTU discovery, change MTU and so on. Always compare a new rule
! 169: # to other fingerprints for this system, and verify the system isn't
! 170: # "customized" before adding it. It is OK to add signature variants
! 171: # caused by a commonly used software (personal firewalls, security
! 172: # packages, etc), but it makes no sense to try to add every single
! 173: # possible /proc/sys/net/ipv4 tweak on Linux or so.
! 174: #
! 175: # KEEP IN MIND: Some packet firewalls configured to normalize outgoing
! 176: # traffic (OpenBSD pf with "scrub" enabled, for example) will, well,
! 177: # normalize packets. Signatures will not correspond to the originating
! 178: # system (and probably not quite to the firewall either).
! 179: #
! 180: # NOTE: Try to keep this file in some reasonable order, from most to
! 181: # least likely systems. This will speed up operation. Also keep most
! 182: # generic and broad rules near the end.
! 183: #
! 184:
! 185: ##########################
! 186: # Standard OS signatures #
! 187: ##########################
! 188:
! 189: # ----------------- Linux -------------------
! 190:
! 191: 512:64:0:44:M*: Linux:2.0:3x:Linux 2.0.3x
! 192: 16384:64:0:44:M*: Linux:2.0:3x:Linux 2.0.3x
! 193:
! 194: 5440:64:1:60:M1360,S,T,N,W0: Linux:google::Linux (Google crawlbot)
! 195:
! 196: S3:64:1:60:M*,S,T,N,W0: Linux:2.4:18-21:Linux 2.4.18 and newer
! 197: S4:64:1:60:M*,S,T,N,W0: Linux:2.4::Linux 2.4
! 198: S3:64:1:60:M*,S,T,N,W1: Linux:2.5::Linux 2.5 (newer)
! 199: S4:64:1:60:M*,S,T,N,W1: Linux:2.5::Linux 2.5
! 200:
! 201: # That's quite stupid, but happens. The WSS is a multiplier of
! 202: # MSS, but not that MSS - the default ethernet MSS instead ;-)
! 203: 5840:64:1:60:M*,S,T,N,W0: Linux:2.4::Linux 2.4 (NAT or snafu)
! 204:
! 205: S20:64:1:60:M*,S,T,N,W0: Linux:2.2:20-25:Linux 2.2.20 and newer
! 206: S22:64:1:60:M*,S,T,N,W0: Linux:2.2::Linux 2.2
! 207:
! 208: # This happens only over loopback:
! 209: # 32767:64:1:60:M*,S,T,N,W0:Linux:2.4 (local)
! 210: # S8:64:1:60:M*,S,T,N,W0:Linux:2.2 (local)
! 211: # Some fairly common mods:
! 212: # S4:64:1:52:M*,N,N,S,N,W0: Linux:2.4:ts:Linux 2.4 w/o timestamps
! 213:
! 214: # ----------------- FreeBSD -----------------
! 215: # 4.6 - 5.0 is a bit of a guesswork at the moment.
! 216: # Need more data before the final release.
! 217:
! 218: 16384:64:1:44:M*: FreeBSD:2.0-2.2::FreeBSD 2.0-4.1
! 219: 16384:64:1:44:M*: FreeBSD:3.0-3.5::FreeBSD 2.0-4.1
! 220: 16384:64:1:44:M*: FreeBSD:4.0-4.1::FreeBSD 2.0-4.1
! 221:
! 222: 1024:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.4::FreeBSD 4.4
! 223: 16384:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.4::FreeBSD 4.4
! 224:
! 225: S:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.6::FreeBSD 4.6
! 226:
! 227: 57344:64:1:44:M*: FreeBSD:4.6-4.8:noRFC1323:FreeBSD 4.6-4.8 (no RFC1323)
! 228: 57344:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.6-4.8::FreeBSD 4.6-4.8
! 229:
! 230: 65535:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.8-4.9::FreeBSD 4.8-5.0
! 231: 65535:64:1:60:M*,N,W0,N,N,T: FreeBSD:5.0::FreeBSD 4.8-5.0
! 232: 32768:64:1:60:M*,N,W0,N,N,T: FreeBSD:4.8-4.9::FreeBSD 4.8-5.0 (or MacOS X)
! 233: 32768:64:1:60:M*,N,W0,N,N,T: FreeBSD:5.0::FreeBSD 4.8-5.0 (or MacOS X)
! 234:
! 235: 65535:48:1:60:M*,N,W1,N,N,T: FreeBSD:5.1::FreeBSD 5.1
! 236:
! 237: # ----------------- NetBSD ------------------
! 238:
! 239: 16384:64:0:60:M*,N,W0,N,N,T0: NetBSD:1.6::NetBSD 1.6
! 240: 16384:64:1:60:M*,N,W0,N,N,T0: NetBSD:1.6:df:NetBSD 1.6 (DF)
! 241: 16384:64:0:60:M*,N,W0,N,N,T: NetBSD:1.3::NetBSD 1.3 (or OpenBSD 2.6)
! 242:
! 243: # ----------------- OpenBSD -----------------
! 244:
! 245: 16384:64:0:60:M*,N,W0,N,N,T: OpenBSD:2.6::NetBSD 1.3 (or OpenBSD 2.6)
! 246: 16384:64:1:64:M*,N,N,S,N,W0,N,N,T: OpenBSD:3.0-3.4::OpenBSD 3.0-3.4
! 247: 16384:64:0:64:M*,N,N,S,N,W0,N,N,T: OpenBSD:3.0-3.4:no-df:OpenBSD 3.0-3.4 (scrub no-df)
! 248: 57344:64:1:64:M*,N,N,S,N,W0,N,N,T: OpenBSD:3.3-3.4::OpenBSD 3.3-3.4
! 249: 57344:64:0:64:M*,N,N,S,N,W0,N,N,T: OpenBSD:3.3-3.4:no-df:OpenBSD 3.3-3.4 (scrub no-df)
! 250:
! 251: # ----------------- Solaris -----------------
! 252: # Splitting 8/9 into two cases, we'll see if there
! 253: # are any complaints...
! 254:
! 255: S17:64:1:64:N,W3,N,N,T0,N,N,S,M*: Solaris:8:RFC1323:Solaris 8 RFC1323
! 256: S17:64:1:48:N,N,S,M*: Solaris:8::Solaris 8
! 257: S34:64:1:48:M1460,N,N,S: Solaris:9::Solaris 9
! 258:
! 259: S17:255:1:44:M*: Solaris:2.5-2.7::Solaris 2.5 to 7
! 260: S6:255:1:44:M*: Solaris:2.6::Solaris 2.6
! 261:
! 262: # ----------------- IRIX --------------------
! 263:
! 264: 61440:64:0:44:M*: IRIX:6.2-6.5::IRIX 6.2-6.5
! 265: 49152:64:0:52:M*,N,W2,N,N,S: IRIX:6.5:RFC1323:IRIX 6.5 (RFC1323)
! 266: 61440:64:0:48:M*,N,N,S: IRIX:6.5:14m:IRIX 6.5.14m
! 267: 49152:64:0:48:M*,N,N,S: IRIX:6.5:19:IRIX 6.5.19
! 268:
! 269: # ----------------- Tru64 -------------------
! 270:
! 271: 32768:64:1:48:M*,N,W0: Tru64:4.0f::Tru64 4.0f
! 272: 61440:64:0:48:M*,N,W0: Tru64:5.1a:JP4:Tru64 v5.1a JP4
! 273:
! 274: # ----------------- OpenVMS -----------------
! 275:
! 276: 6144:64:1:60:M*,N,W0,N,N,T: OpenVMS:7.2::OpenVMS 7.2 (Multinet 4.4 stack)
! 277:
! 278: # ----------------- AIX ---------------------
! 279:
! 280: 32768:64:0:60:M*,N,W0,N,N,T: AIX:4.3:3:AIX 4.3.3
! 281:
! 282: # ----------------- MacOS -------------------
! 283:
! 284: 32768:255:1:48:M*,W0,N: MacOS:9.1-9.2::MacOS 9.1/9.2
! 285:
! 286: # ----------------- Windows -----------------
! 287:
! 288: S44:64:1:48:N,N,S,M*: Windows:98:SE:Windows 98SE
! 289: 8192:128:1:48:M*,N,N,S: Windows:98::Windows 98
! 290: 8192:128:1:44:M*: Windows:NT::Windows old NT (?)
! 291:
! 292: %8192:128:1:48:M*,N,N,S: Windows:XP::Windows XP/2000
! 293: %8192:128:1:48:M*,N,N,S: Windows:2000P::Windows XP/2000
! 294: 65535:128:1:48:M*,N,N,S: Windows:2000:SP4:Windows 2000 SP4
! 295: S44:128:1:48:M*,N,N,S: Windows:XP::Windows XP or 2000 SP3
! 296: S44:128:1:48:M*,N,N,S: Windows:2000:SP3:Windows XP or 2000 SP3
! 297: S6:128:1:48:M*,N,N,S: Windows:XP::Windows XP or 2000 SP3
! 298: S6:128:1:48:M*,N,N,S: Windows:2000:SP3:Windows XP or 2000 SP3
! 299:
! 300: S45:128:1:48:M*,N,N,S: @Windows:XP::Windows XP
! 301: S46:128:1:48:M*,N,N,S: @Windows:XP::Windows XP
! 302:
! 303: # The same stuff w/o DF - happens quite often:
! 304: %8192:128:0:48:M*,N,N,S: Windows:XP::Windows XP/2000
! 305: %8192:128:0:48:M*,N,N,S: Windows:2000P::Windows XP/2000
! 306: 65535:128:0:48:M*,N,N,S: Windows:2000:SP4:Windows 2000 SP4
! 307: S44:128:0:48:M*,N,N,S: Windows:XP::Windows XP or 2000 SP3
! 308: S44:128:0:48:M*,N,N,S: Windows:2000:SP3:Windows XP or 2000 SP3
! 309: S6:128:0:48:M*,N,N,S: Windows:XP::Windows XP or 2000 SP3
! 310: S6:128:0:48:M*,N,N,S: Windows:2000:SP3:Windows XP or 2000 SP3
! 311:
! 312: S45:128:0:48:M*,N,N,S: @Windows:XP:firewalled:Windows XP (firewalled)
! 313: S46:128:0:48:M*,N,N,S: @Windows:XP:firewalled:Windows XP (firewalled)
! 314:
! 315: # I'm not sure what this is, but one report suggests NT. 'll see...
! 316: 32767:128:1:52:M*,N,W0,N,N,S: Windows:NT:4:Windows NT4
! 317: 6144:128:1:52:M*,N,W0,N,N,S: Windows:NT:4:Windows NT4
! 318: S45:128:1:52:M*,N,W0,N,N,S: Windows:NT:4:Windows NT4
! 319:
! 320: *:128:1:64:M*,N,W2,N,N,T0,N,N,S: Windows:2000:SP4:Windows 2000 SP4 (RFC1323) or PalmPC
! 321:
! 322: # Odds and ends...
! 323: 58944:64:1:52:M*,N,W2,N,N,S: Windows:XP:SP2:Windows XP SP2 IPv6 System Mechanic tuned
! 324:
! 325: # ----------------- HP/UX -------------------
! 326:
! 327: 32768:64:1:44:M1460: HP-UX:B.10.20::HP/UX B.10.20
! 328: 32768:64:0:48:M1448,W0,N: HP-UX:11.0::HP/UX 11.0
! 329: 0:64:0:48:M1460,W0,N: HP-UX:B.11.00::HP/UX B.11.0 A (RFC1323)
! 330:
! 331:
! 332: # ----------------- SCO ------------------
! 333: S17:64:1:44:M1460: SCO:Unixware:7.0:SCO Unixware 7.0.0 or OpenServer 5.0.4-5.06
! 334: S17:64:1:44:M1460: SCO:OpenServer:5.0:SCO Unixware 7.0.0 or OpenServer 5.0.4-5.06
! 335:
! 336: # ----------------- RiscOS ------------------
! 337:
! 338: # We don't yet support the ?12 TCP option
! 339: #16384:64:1:68:M1460,N,W0,N,N,T,N,N,?12: RISCOS:3.70::RISC OS 3.70
! 340:
! 341: # ----------------- BSD/OS ------------------
! 342:
! 343: 8192:64:1:60:M1460,N,W0,N,N,T: BSD/OS:3.1::BSD/OS 3.1-4.3
! 344: 8192:64:1:60:M1460,N,W0,N,N,T: BSD/OS:4.0-4.3::BSD/OS 3.1-4.3
! 345:
! 346:
! 347: ################################
! 348: # Appliance / other signatures #
! 349: ################################
! 350:
! 351: # ---------- Firewalls / routers ------------
! 352:
! 353: S12:64:1:44:M1460: @Checkpoint:::Checkpoint (rnknown 1)
! 354: S12:64:1:48:N,N,S,M1460: @Checkpoint:::Checkpoint (unknown 2)
! 355:
! 356: # ------- Switches and other stuff ----------
! 357:
! 358: 4128:255:0:44:M*: Cisco:::Cisco Catalyst 3500, 7500 etc
! 359:
! 360: # ---------- Caches and whatnots ------------
! 361:
! 362: 5840:64:1:52:M1460,N,N,S,N,W0: AOL:web cache::AOL web cache
! 363:
! 364: 32850:64:1:64:N,W1,N,N,T,N,N,S,M*: NetApp:5.x::NetApp Data OnTap 5.x
! 365: 16384:64:1:64:M1460,N,N,S,N,W0,N: NetApp:5.3:1:NetApp 5.3.1
! 366: 65535:64:0:60:M1460,N,W0,N,N,T: NetApp:CacheFlow::NetApp CacheFlow
! 367: 8192:64:1:64:M1460,N,N,S,N,W0,N,N,T: NetApp:5.2:1:NetApp 5.2.1 (OpenBSD-based)
! 368:
! 369: 5840:64:0:48:M1460,N,N,S: Cisco:Content Engine::Cisco Content Engine
! 370:
! 371: 27085:128:0:40:.: Dell:PowerApp cache::Dell PowerApp (Linux-based)
! 372:
! 373: 60352:128:1:64:M1460,N,W2,N,N,T,N,N,S: Alteon:ACEswitch::Alteon ACEswitch
! 374:
! 375: 65535:255:1:48:N,W1,M1460: Inktomi:crawler::Inktomi crawler
! 376:
! 377: 16384:255:0:40:.: Proxyblocker:::Proxyblocker (what's this?)
! 378:
! 379: # ----------- Embedded systems --------------
! 380:
! 381: S9:255:0:44:M536: PalmOS:Tungsten:C:PalmOS Tungsten C(Win95 based)
! 382: S5:255:0:44:M536: PalmOS:3::PalmOS 3 (Win95 based)
! 383:
! 384:
! 385: ####################
! 386: # Fancy signatures #
! 387: ####################
! 388:
! 389: 1024:64:0:40:.: *NMAP:syn scan:1:NMAP syn scan (1)
! 390: 2048:64:0:40:.: *NMAP:syn scan:2:NMAP syn scan (2)
! 391: 3072:64:0:40:.: *NMAP:syn scan:3:NMAP syn scan (3)
! 392: 4096:64:0:40:.: *NMAP:syn scan:4:NMAP syn scan (4)
! 393:
! 394: 1024:64:0:60:W10,N,M265,T: *NMAP:OS:1:NMAP OS detection probe (1)
! 395: 2048:64:0:60:W10,N,M265,T: *NMAP:OS:2:NMAP OS detection probe (2)
! 396: 3072:64:0:60:W10,N,M265,T: *NMAP:OS:3:NMAP OS detection probe (3)
! 397: 4096:64:0:60:W10,N,M265,T: *NMAP:OS:4:NMAP OS detection probe (4)
! 398:
! 399: #####################################
! 400: # Generic signatures - just in case #
! 401: #####################################
! 402:
! 403: #*:64:1:60:M*,N,W*,N,N,T: @FreeBSD:4.0-4.9::FreeBSD 4.x/5.x
! 404: #*:64:1:60:M*,N,W*,N,N,T: @FreeBSD:5.0-5.1::FreeBSD 4.x/5.x
! 405:
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