|
|
发表于 2011-1-30 22:08:57
|
显示全部楼层
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。
! @/ D5 R: [$ L) m" B# N B2 y21:43:36.640578 IP (tos 0x0, ttl 64, id 554, offset 0, flags [none], proto UDP (17), length 576)
z: C2 B( t3 a0 ^9 U; {2 O" a 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)6 X* j! l& Y: b
Client-Ethernet-Address 00:15:eb:6a:a4:b7 (oui Unknown)
, I, I% w# Z. r7 f7 U Vendor-rfc1048 Extensions/ i4 S& ~' \2 c, }7 D$ v
Magic Cookie 0x63825363
$ {8 q) {. Q, e6 I DHCP-Message Option 53, length 1: Discover
4 }& V: ~9 ^( S1 d: y8 v2 ~ Parameter-Request Option 55, length 8:
$ Y$ u4 N3 }( E/ ` Subnet-Mask, Default-Gateway, Domain-Name-Server, Hostname
- L% |/ f' x% c, ] Domain-Name, BR, Router-Discovery, Static-Route* t# q- H3 w0 k
Hostname Option 12, length 32: "ea1001000000004000000015EB6AA4B7"
) t9 {+ ` A' w7 O7 w# x Vendor-Class Option 60, length 53: "^@^@^_1^AM-^J^FM-N @-M-/Y*^B^@^@^@^@^@^@rM-b^_M-/M-8hM-1M-9M-IM-8YM-^Z$M-K;M-t^PM-^_^ZluPNCM-U^MM-9M-=M-O'M-^NM-("0 Y- m& c1 Z# T
END Option 255, length 0
' B' M' u' P" d( S" l; S* e4 i8 t PAD Option 0, length 0, occurs 205
3 |; Z! t- I4 z1 m 0x0000: ffff ffff ffff 0015 eb6a a4b7 0800 4500 .........j....E.- i$ t4 f O' z4 G8 t- r* A' A4 H
0x0010: 0240 022a 0000 4011 7684 0000 0000 ffff .@.*..@.v.......1 Z/ G$ U4 }1 r4 L B/ H
0x0020: ffff 0044 0043 022c ddc0 0101 0600 df11 ...D.C.,........2 K( r! N! k7 R: U0 `
0x0030: aa19 0000 0000 0000 0000 0000 0000 0000 ................1 F5 b2 E9 g6 P/ y5 a5 {* P! X4 L
0x0040: 0000 0000 0000 0015 eb6a a4b7 0000 0000 .........j......9 q& X! x& ]4 T t* z- L
0x0050: 0000 0000 0000 0000 0000 0000 0000 0000 ................
4 V5 p9 W1 X9 Y* i6 |8 u 0x0060: 0000 0000 0000 0000 0000 0000 0000 0000 ................
! t1 C; g% ~% L1 u, i- E; [# ^ 0x0070: 0000 0000 0000 0000 0000 0000 0000 0000 ................1 D% e2 {: _1 s& Y% c' y# a
0x0080: 0000 0000 0000 0000 0000 0000 0000 0000 ................0 y8 s2 x! m1 P
0x0090: 0000 0000 0000 0000 0000 0000 0000 0000 ................
# p( z# n2 y D' N% M1 W 0x00a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................+ ], B, P3 B( S7 X- [1 ]) g
0x00b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................: N. N x1 m! T- O7 g I0 S6 T: g
0x00c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
1 J3 C0 p% r+ G: s5 u 0x00d0: 0000 0000 0000 0000 0000 0000 0000 0000 ................ o% t& z$ }2 H3 P; J
0x00e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
8 `0 Q0 h) ]1 @2 W. f 0x00f0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
: j0 ^! K( A+ {9 g2 h9 m; R o 0x0100: 0000 0000 0000 0000 0000 0000 0000 0000 ................
% `! G) D: d, f: O4 W% `! a3 v 0x0110: 0000 0000 0000 6382 5363 3501 0137 0801 ......c.Sc5..7..
' E3 _) B4 L3 z% a 0x0120: 0306 0c0f 1c1f 210c 2065 6131 3030 3130 ......!..ea10010, q" | j5 R( [1 w
0x0130: 3030 3030 3030 3034 3030 3030 3030 3031 0000000400000001/ L0 X; E) |9 o0 t
0x0140: 3545 4236 4141 3442 373c 3500 001f 3101 5EB6AA4B7<5...1.
8 v$ {) J; R$ K8 S9 [ 0x0150: 8a06 ce20 402d af59 2a02 0000 0000 0000 ....@-.Y*.......
2 K6 T8 w- P) W( f 0x0160: 72e2 1faf b868 b1b9 c9b8 599a 24cb 3bf4 r....h....Y.$.;.) J2 w& O8 d% U2 u2 ^
0x0170: 109f 1a6c 7550 4e43 d50d b9bd cf27 8ea8 ...luPNC.....'..
" o# Z3 q6 p ~ 0x0180: ff00 0000 0000 0000 0000 0000 0000 0000 ................( F( |" ^$ _( i- S
0x0190: 0000 0000 0000 0000 0000 0000 0000 0000 ................+ B/ q5 r% C+ W# ^; M( x
0x01a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................2 g N( ]; A, |
0x01b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
6 v- ]! U. a L) r" l 0x01c0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
/ v+ w: o. a5 @7 B' ` 0x01d0: 0000 0000 0000 0000 0000 0000 0000 0000 ................+ F9 k3 H- Q7 A2 ]* J- j
0x01e0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
5 [7 ?: K: N' Y 0x01f0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
7 z7 { C& J- R( n& Q 0x0200: 0000 0000 0000 0000 0000 0000 0000 0000 ................
. |. p. B% ?5 @# J" S& y8 U 0x0210: 0000 0000 0000 0000 0000 0000 0000 0000 ................
3 Z1 A) q7 Q1 r. Z. l 0x0220: 0000 0000 0000 0000 0000 0000 0000 0000 ................) r& h! }0 v7 y* X' ~2 E
0x0230: 0000 0000 0000 0000 0000 0000 0000 0000 ................
p. s8 Y6 R1 R( N- U# t, |$ ] 0x0240: 0000 0000 0000 0000 0000 0000 0000 .............. |
|