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  1. #1
    Registered
    Join Date
    Dec 2003
    Location
    madrid

    vulnerability in D-link 604 ??

    Hello,

    I am running this router in connection to my broadband ISP. However I run sygate in my main computer as a soft firewall. From time to time I get the following warning as detailed below where an external computer manages to connect to my computer via the DI-604

    I have NAT, no DMZ, not virtual servers etc etc.... no ping from WAN... that is, pretty tight. Only my IDENT and WEB ports seems to be exposed (visible ) from the exterior. I have tested with various network security web portals...



    Thanks.

    JCG



    DI-604 Firmware Version: V3.04, Wed, Jan 14 2004

    File Version : 5.00.2195.6902
    File Description : NT Kernel & System (ntoskrnl.exe)
    File Path : E:\WINNT\system32\ntoskrnl.exe
    Process ID : 0x8 (Heximal) 8 (Decimal)
    Connection origin : remote initiated
    Protocol : TCP
    Local Address : 192.168.0.167
    Local Port : 2608 (WAG-SERVICE - Wag Service)
    Remote Name :
    Remote Address : 82.121.127.64
    Remote Port : 1871
    Ethernet packet details:
    Ethernet II (Packet Length: 1474)
    Destination: 00-0c-76-ad-2b-ac
    Source: 00-0d-88-e8-68-59
    Type: IP (0x0800)
    Internet Protocol
    Version: 4
    Header Length: 20 bytes
    Flags:
    .1.. = Don't fragment: Set
    ..0. = More fragments: Not set
    Fragment offset:0
    Time to live: 112
    Protocol: 0x6 (TCP - Transmission Control Protocol)
    Header checksum: 0x276f (Correct)
    Source: 82.121.127.64
    Destination: 192.168.0.167
    Transmission Control Protocol (TCP)
    Source port: 1871
    Destination port: 2608
    Sequence number: 3305783695
    Acknowledgment number: 456799219
    Header length: 20
    Flags:
    0... .... = Congestion Window Reduce (CWR): Not set
    .0.. .... = ECN-Echo: Not set
    ..0. .... = Urgent: Not set
    ...1 .... = Acknowledgment: Set
    .... 0... = Push: Not set
    .... .0.. = Reset: Not set
    .... ..0. = Syn: Not set
    .... ...0 = Fin: Not set
    Checksum: 0x6102 (Correct)
    Data (1420 Bytes)
    Binary dump of the packet:
    0000: 00 0C 76 AD 2B AC 00 0D : 88 E8 68 59 08 00 45 60 | ..v.+.....hY..E`
    0010: 05 B4 02 B4 40 00 70 06 : 6F 27 52 79 7F 40 C0 A8 | ....@.p.o'Ry.@..
    0020: 00 A7 07 4F 0A 30 C5 0A : 41 8F 1B 3A 33 F3 50 10 | ...O.0..A..:3.P.
    0030: FE 6E 02 61 00 00 13 97 : 6B E2 42 70 F4 94 C2 84 | .n.a....k.Bp....
    0040: 09 AC 01 8E 00 5E 60 BA : 84 D3 F9 E0 00 13 05 33 | .....^`........3
    0050: F9 89 71 18 F8 60 27 1E : 13 B1 99 55 C5 4A B5 94 | ..q..`'....U.J..
    0060: AC 60 1A 58 E2 FA 00 14 : 71 14 D9 0A 01 5B 4E 1E | .`.X....q....[N.
    0070: 82 4B F9 85 0B A7 14 00 : 98 F1 71 2A 95 99 96 15 | .K........q*....
    0080: CB F4 00 0B 28 03 85 75 : 20 B2 91 12 96 9A B5 F2 | ....(..u .......
    0090: 72 D3 0D 84 91 B4 90 17 : D0 AC 3A 26 25 AB E8 EF | r.........:&%...
    00A0: 25 58 09 80 E0 81 9F 86 : 05 81 00 1A 7F FF FF F1 | %X..............
    00B0: 74 7C 4E 16 1D 11 6B E7 : 29 04 AA 1C EE CD F8 0E | t|N...k.).......
    00C0: 58 BA B8 41 58 40 46 90 : 92 84 3B 05 0B 19 62 F1 | X..AX@F...;...b.
    00D0: 3C 3A 4F BA EA 46 90 01 : 4C 2D 30 BE 93 D6 3D 8C | <:O..F..L-0...=.
    00E0: 28 1A 03 0F 4B F1 56 E7 : D0 32 B7 56 3D 8D E1 66 | (...K.V..2.V=..f
    00F0: 40 A2 C7 B5 D4 51 EC 41 : 37 C9 3F 0B CA 19 28 A7 | @....Q.A7.?...(.
    0100: FF FE 8D 8E 3C 81 60 75 : 20 95 70 AD E1 C9 63 2A | ....<.`u .p...c*
    0110: 22 B1 FA 10 B5 22 71 11 : AF 73 99 42 FE 14 4A A5 | "...."q..s.B..J.
    0120: 5C 5C 01 BD 2C E3 E5 84 : 61 6C C4 B9 61 43 BF F0 | \\..,...al..aC..
    0130: 57 50 2A 12 82 C4 91 26 : 25 56 DF 20 5D 12 D8 02 | WP*....&%V. ]...
    0140: 7F 4E 95 51 76 05 7D A8 : CA C3 D7 2C 7B A8 DA 84 | .N.Qv.}....,{...
    0150: 03 55 D4 23 40 AA 2E 53 : 8F 3F 5E 65 A0 BC 55 62 | .U.#@..S.?^e..Ub
    0160: D0 58 C1 11 28 18 4A C4 : C7 F4 BC 8C 64 A0 3D 00 | .X..(.J.....d.=.
    0170: 35 64 20 03 41 B8 6F DB : D7 FE 22 02 2B F1 42 63 | 5d .A.o...".+.Bc
    0180: 81 30 62 02 22 38 03 27 : 14 9B 48 69 2A 3A 65 47 | .0b."8.'..Hi*:eG
    0190: 5C 5F A1 0E 68 CB 7E 81 : 2C 44 42 49 2C A1 CD 48 | \_..h.~.,DBI,..H
    01A0: 5B 03 B1 15 C5 DC 49 DC : 6A 41 09 AE 41 81 13 42 | [.....I.jA..A..B
    01B0: 13 6A 84 40 60 E0 1E AA : CC 00 5D 2C 8D DC 1B B9 | .j.@`.....],....
    01C0: 12 7E 40 3D 2F A3 71 38 : 20 7C EB 16 12 40 20 2F | .~@=/.q8 |...@ /
    01D0: 1C 1D FF FF D4 AB 34 7B : 13 D3 27 99 D2 9C E3 E2 | ......4{..'.....
    01E0: 29 90 20 00 05 5E FF C9 : 7E 86 43 0E CE 20 63 02 | ). ..^..~.C.. c.
    01F0: 6A E5 CB 60 A5 20 48 7A : 86 61 40 0F B7 93 47 4E | j..`. Hz.a@...GN
    0200: 99 2B 62 3C 94 D5 35 D5 : B0 52 B8 08 A0 E2 83 9C | .+b<..5..R......
    0210: 52 9B 34 65 18 C2 28 D9 : D0 62 86 C7 78 B0 3A C7 | R.4e..(..b..x.:.
    0220: 5C 4C 83 F8 6A 72 F1 47 : 86 41 65 71 C4 87 FA C7 | \L..jr.G.Aeq....
    0230: F1 07 27 F8 48 F3 0C 45 : BF FF FF F8 CB D1 0C D6 | ..'.H..E........
    0240: 49 7A 22 9B 76 89 75 CB : FF E6 31 1C 4B F8 28 01 | Iz".v.u...1.K.(.
    0250: 14 51 CB A4 00 09 59 F3 : 57 3E 8C 00 E2 61 50 51 | .Q....Y.W>...aPQ
    0260: 01 70 4C A1 42 72 82 97 : 7F AE 70 00 85 15 90 29 | .pL.Br....p....)
    0270: 56 A8 9C 2A 0B FC 2B D7 : 59 61 4A 6C 95 88 4F 63 | V..*..+.YaJl..Oc
    0280: 3A DC 0C 6A C2 B5 55 85 : 74 6C CB 29 5C 70 C3 B1 | :..j..U.tl.)\p..
    0290: 13 00 95 22 9C 0D 44 09 : C4 20 0A 0A 73 14 0B 00 | ..."..D.. ..s...
    02A0: 02 0B F5 33 06 71 02 B2 : 14 BF FF FF FF DE 9B E8 | ...3.q..........
    02B0: C2 60 87 17 AC 3B 0F E0 : A4 40 16 F4 54 00 7D 58 | .`...;...@..T.}X
    02C0: 56 48 62 25 52 E3 7C 50 : 02 28 2C C9 C6 F2 EB 08 | VHb%R.|P.(,.....
    02D0: 00 C2 27 1A 41 1D C4 0F : 45 48 92 8C 46 CB F1 BF | ..'.A...EH..F...
    02E0: 42 1F D0 14 8D 71 77 74 : 55 0B 18 2C 69 87 57 52 | B....qwtU..,i.WR
    02F0: 2E 66 16 04 01 F3 E4 C2 : F9 AB F2 40 31 97 E9 2D | .f.........@1..-
    0300: E0 08 04 C5 A8 B1 24 37 : 57 29 A2 81 50 88 11 3D | ......$7W)..P..=
    0310: 89 2A C7 2E 40 49 48 11 : C8 47 D7 0F 1C FF EF A0 | .*..@IH..G......
    0320: 7F FF F8 B3 82 29 99 2F : 45 0B AA 63 A1 4F 88 7A | .....)./E..c.O.z
    0330: 3E A4 E7 2C 94 10 77 56 : 70 00 02 AA 2E E3 A1 40 | >..,..wVp......@
    0340: 0F 94 3F 98 17 13 40 89 : 42 92 8A 4D FD A8 5D 4C | ..?...@.B..M..]L
    0350: 20 25 E8 9F 97 13 97 E4 : 85 A1 60 F3 D2 43 FC D0 | %........`..C..
    0360: 88 81 D2 78 30 48 1A E7 : 84 04 F3 04 68 76 16 B4 | ...x0H......hv..
    0370: AA 33 06 DE F5 A8 FF A0 : 08 80 ED AF FF FF 80 30 | .3.............0
    0380: 31 77 62 72 02 00 00 FF : FB B0 64 18 88 05 17 68 | 1wbr......d....h
    0390: D5 D3 06 4B 72 63 E7 DA : 6C 61 22 6C 13 8D A1 59 | ...Krc..la"l...Y
    03A0: 47 B1 24 C9 EC B4 6B 34 : F2 A6 B8 07 40 C2 AE 5A | G.$...k4....@..Z
    03B0: 19 BA E5 02 5E B6 9C B7 : 67 2E 28 D8 93 6D ED C1 | ....^...g.(..m..
    03C0: 6C A5 A1 BA B3 D2 BF B9 : B9 0C 94 A7 E0 BA 23 AC | l.............#.
    03D0: C4 91 3B 84 2B 52 9C E4 : 56 E1 2C C8 A0 AA 6B 56 | ..;.+R..V.,...kV
    03E0: C4 F5 47 E2 ED 69 7A 79 : 22 F2 BD BA 4E BC 94 43 | ..G..izy"...N..C
    03F0: 32 07 23 E9 10 32 B7 0D : 28 80 90 81 34 E2 9C 42 | 2.#..2..(...4..B
    0400: 62 80 A0 94 1A 30 5D 9A : 1A 46 4F 01 59 B0 21 22 | b....0]..FO.Y.!"
    0410: 16 88 E4 A4 27 34 02 C2 : B9 08 BF 43 74 01 03 00 | ....'4.....Ct...
    0420: 41 5C 00 05 F2 AE 80 8E : 45 36 E8 AA 0F EB 9F 81 | A\......E6......
    0430: 20 D3 65 0B D9 73 FD 0E : A8 20 40 B0 31 32 A0 9A | .e..s... @.12..
    0440: 28 44 0D A2 18 E4 90 93 : 92 5C C1 8F B2 60 84 B9 | (D.......\...`..
    0450: D4 C0 89 19 22 58 63 9C : 34 C8 59 0E 8E B7 F2 2B | ...."Xc.4.Y....+
    0460: 91 54 CD 5A 97 77 F6 FF : B7 F5 53 11 E6 64 A6 E1 | .T.Z.w....S..d..
    0470: 54 20 E1 25 9F ED D9 FF : EB 7C 3F A1 1F FC D2 9E | T .%.....|?.....
    0480: 4E 57 6E 28 D0 08 14 42 : A0 85 99 61 DC A0 0D C9 | NWn(...B...a....
    0490: E5 70 38 47 8D 48 76 6C : 80 36 93 63 CD D6 EA 0A | .p8G.Hvl.6.c....
    04A0: 12 02 04 44 99 35 DB 81 : 64 24 B8 CE 1F 25 DD 5E | ...D.5..d$...%.^
    04B0: 48 B8 A5 01 42 C8 A3 9F : CF 65 26 C7 94 B3 26 54 | H...B....e&...&T
    04C0: 72 89 B7 3D C2 33 27 13 : 41 0E B2 8D 1A 9F AC 32 | r..=.3'.A......2
    04D0: 48 81 E9 C1 0E 43 15 26 : 4E DE 6A 1B 6B F8 CD A4 | H....C.&N.j.k...
    04E0: F8 BB A3 9F EE DD D6 6B : B6 73 C4 F2 5D 9D BA 95 | .......k.s..]...
    04F0: DC BC 5B 6B AF B0 95 52 : 2D D5 13 AB 74 E9 58 21 | ..[k...R-...t.X!
    0500: 49 BE 4B 36 CC AE 46 C5 : 75 24 23 81 75 F5 95 E2 | I.K6..F.u$#.u...
    0510: A4 59 72 26 CE 29 BF 2E : CA ED BE 41 CC 80 00 80 | .Yr&.).....A....
    0520: 02 02 0B 60 36 A2 8C BD : 3F 4E 12 C6 C7 2C 93 03 | ...`6...?N...,..
    0530: D9 39 1D 27 B7 F3 E3 51 : F7 99 5C E9 F5 12 36 B6 | .9.'...Q..\...6.
    0540: D3 C8 50 42 8A 0A BA BB : 3D CE 56 A6 C8 51 37 79 | ..PB....=.V..Q7y
    0550: 8C 92 B0 C2 20 B8 B3 B8 : D0 FB 33 B3 51 1D DD 08 | .... .....3.Q...
    0560: 21 14 22 1C 9F FF FF FF : FF FF FF CB 58 A1 9A 40 | !.".........X..@
    0570: E7 DA 26 8A C1 22 73 93 : 93 66 13 44 56 8F C2 E4 | ..&.."s..f.DV...
    0580: E3 C6 90 0A 0F AF 19 D8 : 51 71 84 18 D1 4D 3B B7 | ........Qq...M;.
    0590: A8 50 2E 8F 23 BF 12 A6 : D5 04 44 81 3B 08 40 09 | .P..#.....D.;.@.
    05A0: 05 28 3E 94 A0 18 F1 08 : 3F 5E B8 AD 65 00 FB 0A | .(>.....?^..e...
    05B0: 17 97 0A EA C9 59 E9 C4 : A1 27 8C FC 94 94 71 48 | .....Y...'....qH
    05C0: 31 29 : | 1)

  2. #2
    Member Tebore's Avatar
    10 Year Badge
    Join Date
    Aug 2001
    Location
    Toronto,Canada(I can see you....)
    If you read a description about those ports at GRC you'll find that most routers don't stealth them. This is because most Email programs use them and the router doesn't want to **** off the customer. Smart firewalls and routers will adaptively stealth them, I know Linksys recently had a firmware update that did that.
    UMPC:
    Asus EEE 701(4G)
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    Lenovo T60p
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