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发表于 2011-1-30 22:08:57
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我刚从tcpdump了一下iptv机顶盒启动时发的数据包,可以看出他使用了DHCP option60,而且也把自己的序列号作为hostname嵌入。注:Vendor-Class Option 60, length 53:貌似加密了。
- m. P7 R5 ~$ c21:43:36.640578 IP (tos 0x0, ttl 64, id 554, offset 0, flags [none], proto UDP (17), length 576)3 M0 x! o: ]1 s" j2 z$ y4 u7 i
0.0.0.0.bootpc > 255.255.255.255.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:15:eb:6a:a4:b7 (oui Unknown), length 548, xid 0xdf11aa19, Flags [none] (0x0000)
: O% M/ O, Q& Z3 v$ S W) m Client-Ethernet-Address 00:15:eb:6a:a4:b7 (oui Unknown)
5 T v# [$ X0 m Vendor-rfc1048 Extensions
1 J; E4 z, |7 a, c Magic Cookie 0x63825363
* K2 M; c. X" x. t DHCP-Message Option 53, length 1: Discover, _! y: ~# b) x" e
Parameter-Request Option 55, length 8: & Q. Z) d9 Q3 T6 c# [# S7 s7 p* t+ h
Subnet-Mask, Default-Gateway, Domain-Name-Server, Hostname
5 z. {, D w/ z& S; Y Domain-Name, BR, Router-Discovery, Static-Route* u# p9 u% _# z* x G* H8 h$ t- l
Hostname Option 12, length 32: "ea1001000000004000000015EB6AA4B7"9 W! `/ {4 O! g; j; a
Vendor-Class Option 60, length 53: "^@^@^_1^AM-^J^FM-N @-M-/Y*^B^@^@^@^@^@^@rM-b^_M-/M-8hM-1M-9M-IM-8YM-^Z$M-K;M-t^PM-^_^ZluPNCM-U^MM-9M-=M-O'M-^NM-("& V" C$ [& p1 F% H
END Option 255, length 0
! E% P5 A! H/ L6 h3 R: X' J4 s PAD Option 0, length 0, occurs 205$ E* [- v( V5 x
0x0000: ffff ffff ffff 0015 eb6a a4b7 0800 4500 .........j....E.
8 O0 g0 r/ ^. W2 P" G6 c8 u 0x0010: 0240 022a 0000 4011 7684 0000 0000 ffff .@.*..@.v.......
2 {9 I+ j. y$ F. n( e) F$ N 0x0020: ffff 0044 0043 022c ddc0 0101 0600 df11 ...D.C.,........6 G" I% F2 b1 K: K- ~# o
0x0030: aa19 0000 0000 0000 0000 0000 0000 0000 ................ f# E) Q$ Z* R6 A9 ]+ K
0x0040: 0000 0000 0000 0015 eb6a a4b7 0000 0000 .........j......5 [1 Y& j( l( x; s' E1 B
0x0050: 0000 0000 0000 0000 0000 0000 0000 0000 ................. `0 v1 q. }; @
0x0060: 0000 0000 0000 0000 0000 0000 0000 0000 ................& J( `" K! f9 y1 B
0x0070: 0000 0000 0000 0000 0000 0000 0000 0000 ................
; e& p' o. y4 m2 m! r: c* Q 0x0080: 0000 0000 0000 0000 0000 0000 0000 0000 ................7 ], _$ x8 h! d% }0 `$ R
0x0090: 0000 0000 0000 0000 0000 0000 0000 0000 ................
. v+ c0 p, w7 Z) ]* \, L. I 0x00a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
$ o: B5 w( z, ^, y2 K 0x00b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................5 e; ?6 X1 ]7 p" z* J% r* Z [
0x00c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
0 w& |: f* i1 Q: A4 _ 0x00d0: 0000 0000 0000 0000 0000 0000 0000 0000 ................/ _* K" Y* A' w! M7 C
0x00e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................2 j9 T; T" d2 u: D1 O& U
0x00f0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
8 @$ |3 _2 s' d* m( m: J8 k( R 0x0100: 0000 0000 0000 0000 0000 0000 0000 0000 ................
1 x. h% _2 `1 e! y* J) u$ N 0x0110: 0000 0000 0000 6382 5363 3501 0137 0801 ......c.Sc5..7.." f' l- Z) ]' v0 ]: r( c4 K# q
0x0120: 0306 0c0f 1c1f 210c 2065 6131 3030 3130 ......!..ea100109 h8 A& A4 `: \( ?" t' c$ K# G
0x0130: 3030 3030 3030 3034 3030 3030 3030 3031 00000004000000010 H* z7 x2 J" D
0x0140: 3545 4236 4141 3442 373c 3500 001f 3101 5EB6AA4B7<5...1.
3 b, L$ j% h0 _! Z$ }. k' M 0x0150: 8a06 ce20 402d af59 2a02 0000 0000 0000 ....@-.Y*.......
9 m# k% O# }; G# t7 \ 0x0160: 72e2 1faf b868 b1b9 c9b8 599a 24cb 3bf4 r....h....Y.$.;.+ r. y& K' T% [$ t! w+ R0 l7 e
0x0170: 109f 1a6c 7550 4e43 d50d b9bd cf27 8ea8 ...luPNC.....'..* C, H3 d4 ?* c
0x0180: ff00 0000 0000 0000 0000 0000 0000 0000 ................( d4 @, o5 _5 m( {+ E8 `
0x0190: 0000 0000 0000 0000 0000 0000 0000 0000 ................
! D9 d/ l6 O" O 0x01a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
6 z5 h1 f/ [# S" [! C$ P 0x01b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................" y! m: q d/ u/ g/ x, _3 A' b
0x01c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
O( E! u, v2 ?" H 0x01d0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
' {5 u8 v) n5 x* a2 m 0x01e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................. ? f) y7 Y6 u$ p2 {
0x01f0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
% ]5 `2 d& M9 u1 j: e 0x0200: 0000 0000 0000 0000 0000 0000 0000 0000 ................
. F0 f* @; |: o9 k' B 0x0210: 0000 0000 0000 0000 0000 0000 0000 0000 ................3 v- _. R9 L6 d! h; _
0x0220: 0000 0000 0000 0000 0000 0000 0000 0000 ................! F H) W9 R( V% M; U6 w& h1 N
0x0230: 0000 0000 0000 0000 0000 0000 0000 0000 ................, s4 _5 t; ~, N, k* E( | z
0x0240: 0000 0000 0000 0000 0000 0000 0000 .............. |
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