Sinds ongeveer 4 dagen geleden heb ik een toename in mijn latency, vooral merkbaar tijdens het spelen van games. In de log van de modem vond ik deze berichten nogal verontrustend:
1 2012-12-30 21:10:10 alert SYN_FLOODING ATTACK:SRC=84.84.92.93 DST=xxx.xxx.xxx.xxx
2 2012-12-30 20:31:27 alert SYN_FLOODING ATTACK:SRC=80.237.194.100 DST=xxx.xxx.x.xx
verder heb ik de dsl line status gechecked met de volgende uitslag:
Current Firmware Version: V3.10(TUE.4)-20120702
DSL version information: 5.4.8.0.0.6
DSL near end inventory information:
nReturn=0 nDirection=0 G994VendorID=IFTNT SystemVendorID=LANTIQ VersionNumber=5.4.8.0.0.6 SerialNumber=ZyXEL 2812HNU-F1C86C877BB470 SelfTestResult=0 XTSECapabilities=(00,00,00,00,00,00,00,07)
DSL far end inventory information:
nReturn=0 nDirection=1 G994VendorID=IKNS SystemVendorID=IKNS VersionNumber=6.7.1.6.8IK00501 SerialNumber= SelfTestResult=0 XTSECapabilities=(00,00,00,00,00,00,00,00)
noise margin upstream: 6 db
output power downstream: 3 db
attenuation upstream: 0 db
noise margin downstream: 6 db
output power upstream: 14 db
attenuation downstream: 26 db
loop length is 1643m
SRA upstream: init
SRA downstream: init
bitswap upstream: enabled
bitswap downstream: enabled
current rate upstream: 1476 kbps
interleaving delay upstream: 4.00 ms
impulse noise protection upstream: 1.0 symbols
current rate downstream: 26652 kbps
interleaving delay downstream: 8.50 ms
impulse noise protection downstream: 1.0 symbols
attainable rate upstream: 1688 kbps
attainable rate downstream: 26674 kbps
linetype: VDSL2
Profile: 8b
operational uptime: 1:10
CodeViolations near end: 14
FEC near end: 4493
CodeViolations far end: 50
FEC far end: 155
Bandborders upstream:
nReturn=0 nDirection=0 nNumData=2
nFormat=(nBandIndex, (nLimit_firstToneIndex, nLimit_lastToneIndex), (nBorder_firstToneIndex, nBorder_lastToneIndex)) nData="
(00,(0006,0064),(0008,0064))
(01,(0874,1202),(0948,1009))
"
Bandborders downstream:
nReturn=0 nDirection=1 nNumData=2
nFormat=(nBandIndex, (nLimit_firstToneIndex, nLimit_lastToneIndex), (nBorder_firstToneIndex, nBorder_lastToneIndex)) nData="
(00,(0068,0864),(0068,0863))
(01,(1209,1339),(0000,0000))
"
Tones upstream:
nReturn=0 nDirection=0 nNumData=81
nFormat=(nToneIndex(dec),nBit(hex)) nData="
(0008,02) (0009,02)
(0010,03) (0011,04) (0012,04) (0013,05) (0014,06) (0015,05) (0016,06) (0017,07) (0018,06) (0019,07)
(0020,07) (0021,07) (0022,08) (0023,08) (0024,08) (0025,09) (0026,08) (0027,09) (0028,09) (0029,09)
(0030,09) (0031,09) (0032,09) (0033,09) (0034,09) (0035,0A) (0036,09) (0037,0A) (0038,09) (0039,09)
(0040,09) (0041,0A) (0042,09) (0043,0A) (0044,09) (0045,0A) (0046,09) (0047,0A) (0048,09) (0049,0A)
(0050,09) (0051,09) (0052,09) (0053,09) (0054,09) (0055,09) (0056,08) (0057,09) (0058,09) (0059,09)
(0060,08) (0061,08) (0062,08) (0063,08) (0064,08)
(0948,01)
(0950,01)
(0956,01)
(0958,01)
(0960,01)
(0964,01)
(0966,01)
(0968,01)
(0970,01)
(0974,01)
(0976,01)
(0978,01)
(0980,01)
(0984,01)
(0986,01)
(0988,01)
(0990,01)
(0996,01)
(0998,01)
(1000,01)
(1002,01)
(1004,01)
(1006,01)
(1009,01)
"
Tones downstream:
nReturn=0 nDirection=1 nNumData=795
nFormat=(nToneIndex(dec),nBit(hex)) nData="
(0068,0B) (0069,0C)
(0070,0C) (0071,0C) (0072,0C) (0073,0C) (0074,0C) (0075,0C) (0076,0C) (0077,0C) (0078,0D) (0079,0D)
(0080,0D) (0081,0D) (0082,0D) (0083,0D) (0084,0D) (0085,0D) (0086,0D) (0087,0D) (0088,0D) (0089,0D)
(0090,0D) (0091,0D) (0092,0D) (0093,0D) (0094,0D) (0095,0D) (0096,0D) (0097,0D) (0098,0D) (0099,0C)
(0100,0C) (0101,0C) (0102,0C) (0103,0C) (0104,0C) (0105,0C) (0106,0C) (0107,0D) (0108,0C) (0109,0D)
(0110,0C) (0111,0C) (0112,0C) (0113,0C) (0114,0C) (0115,0C) (0116,0C) (0117,0C) (0118,0C) (0119,0C)
(0120,0C) (0121,0C) (0122,0C) (0123,0C) (0124,0C) (0125,0C) (0126,0C) (0127,0C) (0128,0C) (0129,0C)
(0130,0C) (0131,0C) (0132,0C) (0133,0C) (0134,0C) (0135,0C) (0136,0C) (0137,0C) (0138,0C) (0139,0C)
(0140,0C) (0141,0C) (0142,0C) (0143,0C) (0144,0C) (0145,0C) (0146,0C) (0147,0C) (0148,0B) (0149,0B)
(0150,0B) (0151,0C) (0152,0B) (0153,0B) (0154,0B) (0155,0C) (0156,0B) (0157,0B) (0158,0B) (0159,0B)
(0160,0C) (0161,0B) (0162,0B) (0163,0B) (0164,0B) (0165,0B) (0166,0B) (0167,0B) (0168,0B) (0169,0B)
(0170,0B) (0171,0B) (0172,0B) (0173,0B) (0174,0B) (0175,0B) (0176,0B) (0177,0B) (0178,0B) (0179,0B)
(0180,0B) (0181,0B) (0182,0B) (0183,0B) (0184,0B) (0185,0B) (0186,0B) (0187,0B) (0188,0B) (0189,0B)
(0190,0B) (0191,0B) (0192,09) (0193,0B) (0194,0B) (0195,0B) (0196,0B) (0197,0B) (0198,0B) (0199,0B)
(0200,0B) (0201,0B) (0202,0B) (0203,0B) (0204,0B) (0205,0B) (0206,0B) (0207,0B) (0208,0B) (0209,0A)
(0210,0B) (0211,0B) (0212,0B) (0213,0B) (0214,0B) (0215,0B) (0216,0A) (0217,0A) (0218,0B) (0219,0B)
(0220,0B) (0221,0B) (0222,0B) (0223,0A) (0224,0B) (0225,0A) (0226,0B) (0227,0A) (0228,0B) (0229,0A)
(0230,0A) (0231,0B) (0232,0A) (0233,0A) (0234,0A) (0235,0A) (0236,0A) (0237,0A) (0238,0A) (0239,0A)
(0240,0A) (0241,0A) (0242,0A) (0243,0A) (0244,0A) (0245,0A) (0246,0A) (0247,0A) (0248,0A) (0249,0A)
(0250,0A) (0251,0A) (0252,0A) (0253,0A) (0254,0A) (0255,0A) (0256,0B) (0257,0A) (0258,0A) (0259,0A)
(0260,0A) (0261,0A) (0262,0A) (0263,0A) (0264,0A) (0265,0A) (0266,0A) (0267,0A) (0268,0A) (0269,0A)
(0270,0A) (0271,0A) (0272,0A) (0273,0A) (0274,0A) (0275,0A) (0276,0A) (0277,0A) (0278,0A) (0279,0A)
(0280,0A) (0281,0A) (0282,0A) (0283,0A) (0284,0A) (0285,0A) (0286,0A) (0287,0A) (0288,0A) (0289,0A)
(0290,0A) (0291,0A) (0292,0A) (0293,0A) (0294,0A) (0295,0A) (0296,0A) (0297,0A) (0298,0A) (0299,0A)
(0300,0A) (0301,0A) (0302,0A) (0303,0A) (0304,0A) (0305,0A) (0306,0A) (0307,0A) (0308,0A) (0309,0A)
(0310,0A) (0311,0A) (0312,0A) (0313,0A) (0314,0A) (0315,0A) (0316,0A) (0317,0A) (0318,0A) (0319,0A)
(0320,0A) (0321,0A) (0322,0A) (0323,0A) (0324,0A) (0325,0A) (0326,0A) (0327,0A) (0328,0A) (0329,0A)
(0330,0B) (0331,0A) (0332,0A) (0333,0A) (0334,0A) (0335,0A) (0336,0A) (0337,0A) (0338,0A) (0339,0A)
(0340,0A) (0341,0A) (0342,0A) (0343,0A) (0344,0B) (0345,0A) (0346,0A) (0347,0A) (0348,0B) (0349,0A)
(0350,0B) (0351,0B) (0352,0B) (0353,0B) (0354,0B) (0355,0B) (0356,0B) (0357,0B) (0358,0B) (0359,0B)
(0360,0B) (0361,0B) (0362,0B) (0363,0B) (0364,0B) (0365,0B) (0366,0B) (0367,0B) (0368,0B) (0369,0B)
(0370,0B) (0371,0B) (0372,0B) (0373,0B) (0374,0B) (0375,0B) (0376,0B) (0377,0A) (0378,0B) (0379,0B)
(0380,0B) (0381,0B) (0382,0B) (0383,0B) (0384,0B) (0385,0B) (0386,0A) (0387,0A) (0388,0B) (0389,0A)
(0390,0B) (0391,0B) (0392,0A) (0393,0B) (0394,0A) (0395,0B) (0396,0A) (0397,0A) (0398,0A) (0399,0B)
(0400,0A) (0401,0A) (0402,0A) (0403,0A) (0404,0A) (0405,0A) (0406,0A) (0407,0B) (0408,0A) (0409,0A)
(0410,0A) (0411,0A) (0412,0A) (0413,0A) (0414,0A) (0415,0A) (0416,0A) (0417,0A) (0418,0A) (0419,0A)
(0420,0A) (0421,0B) (0422,0A) (0423,0A) (0424,0A) (0425,0A) (0426,0A) (0427,0A) (0428,0B) (0429,0A)
(0430,0A) (0431,0A) (0432,0A) (0433,0A) (0434,0A) (0435,0A) (0436,0A) (0437,0A) (0438,0A) (0439,0A)
(0440,0A) (0441,0A) (0442,0B) (0443,0B) (0444,0A) (0445,0A) (0446,0B) (0447,0A) (0448,0A) (0449,0A)
(0450,0A) (0451,0A) (0452,0A) (0453,0A) (0454,0A) (0455,0B) (0456,0A) (0457,0A) (0458,0A) (0459,0B)
(0460,0B) (0461,0A) (0462,0B) (0463,0A) (0464,0B) (0465,0B) (0466,0A) (0467,0A) (0468,0A) (0469,0B)
(0470,0B) (0471,0A) (0472,0B) (0473,0A) (0474,0A) (0475,0B) (0476,0A) (0477,0A) (0478,0A) (0479,0A)
(0480,0A) (0481,0B) (0482,0A) (0483,0A) (0484,0A) (0485,0A) (0486,0A) (0487,0A) (0488,0A) (0489,0A)
(0490,0B) (0491,0A) (0492,0A) (0493,0A) (0494,0A) (0495,0A) (0496,0A) (0497,0A) (0498,0A) (0499,0A)
(0500,0A) (0501,0A) (0502,0A) (0503,0A) (0504,0A) (0505,0A) (0506,0A) (0507,0A) (0508,0A) (0509,0A)
(0510,0A) (0511,0A) (0512,0B) (0513,0B) (0514,0B) (0515,0A) (0516,0B) (0517,0B) (0518,0A) (0519,0A)
(0520,0A) (0521,0A) (0522,0B) (0523,0B) (0524,0A) (0525,0A) (0526,0A) (0527,0B) (0528,0A) (0529,0A)
(0530,0A) (0531,0A) (0532,0A) (0533,0B) (0534,0A) (0535,0A) (0536,0A) (0537,0A) (0538,0A) (0539,0A)
(0540,0B) (0541,0A) (0542,0A) (0543,0A) (0544,0A) (0545,0A) (0546,0A) (0547,0A) (0548,0A) (0549,0A)
(0551,0A) (0552,0A) (0553,0A) (0554,0A) (0555,0A) (0556,0A) (0557,0A) (0558,0A) (0559,0A)
(0560,0A) (0561,0A) (0562,0A) (0563,0A) (0564,0A) (0565,0A) (0566,0A) (0567,0A) (0568,0A) (0569,0A)
(0570,0A) (0571,0A) (0572,0A) (0573,0A) (0574,0A) (0575,0A) (0576,0A) (0577,0A) (0578,0A) (0579,0A)
(0580,0A) (0581,0A) (0582,0A) (0583,0A) (0584,0A) (0585,0A) (0586,0A) (0587,0A) (0588,0A) (0589,0A)
(0590,0A) (0591,0A) (0592,0A) (0593,09) (0594,0A) (0595,0A) (0596,09) (0597,09) (0598,0A) (0599,09)
(0600,09) (0601,09) (0602,09) (0603,09) (0604,09) (0605,09) (0606,09) (0607,09) (0608,09) (0609,09)
(0610,09) (0611,09) (0612,09) (0613,09) (0614,09) (0615,09) (0616,09) (0617,09) (0618,09) (0619,09)
(0620,09) (0621,09) (0622,09) (0623,09) (0624,09) (0625,09) (0626,09) (0627,09) (0628,09) (0629,09)
(0630,09) (0631,09) (0632,09) (0633,09) (0634,09) (0635,09) (0636,09) (0637,09) (0638,09) (0639,09)
(0640,09) (0641,09) (0642,09) (0643,09) (0644,09) (0645,09) (0646,09) (0647,08) (0648,09) (0649,09)
(0650,09) (0651,08) (0652,08) (0653,09) (0654,09) (0655,09) (0656,08) (0657,08) (0658,09) (0659,08)
(0660,09) (0661,08) (0662,08) (0663,09) (0664,09) (0665,09) (0666,09) (0667,08) (0668,08) (0669,09)
(0670,08) (0671,09) (0672,08) (0673,08) (0674,08) (0675,08) (0676,08) (0677,08) (0678,08) (0679,08)
(0680,08) (0681,08) (0682,08) (0683,08) (0684,08) (0685,08) (0686,08) (0687,08) (0688,08) (0689,08)
(0690,08) (0691,08) (0692,08) (0693,08) (0694,08) (0695,08) (0696,08) (0697,08) (0698,08) (0699,08)
(0700,08) (0701,08) (0702,08) (0703,08) (0704,07) (0705,08) (0706,07) (0707,08) (0708,07) (0709,07)
(0710,07) (0711,08) (0712,08) (0713,07) (0714,07) (0715,07) (0716,07) (0717,07) (0718,07) (0719,07)
(0720,07) (0721,07) (0722,07) (0723,07) (0724,07) (0725,07) (0726,07) (0727,07) (0728,07) (0729,07)
(0730,07) (0731,07) (0732,07) (0733,07) (0734,07) (0735,07) (0736,07) (0737,07) (0738,07) (0739,07)
(0740,07) (0741,07) (0742,07) (0743,07) (0744,07) (0745,07) (0746,07) (0747,07) (0748,07) (0749,07)
(0750,07) (0751,07) (0752,07) (0753,07) (0754,07) (0755,07) (0756,07) (0757,07) (0758,07) (0759,07)
(0760,07) (0761,07) (0762,07) (0763,07) (0764,07) (0765,07) (0766,07) (0767,07) (0768,07) (0769,07)
(0770,07) (0771,07) (0772,07) (0773,07) (0774,06) (0775,07) (0776,07) (0777,07) (0778,07) (0779,06)
(0780,06) (0781,06) (0782,06) (0783,06) (0784,07) (0785,06) (0786,07) (0787,06) (0788,07) (0789,06)
(0790,06) (0791,06) (0792,06) (0793,06) (0794,06) (0795,06) (0796,06) (0797,06) (0798,06) (0799,06)
(0800,06) (0801,06) (0802,06) (0803,06) (0804,06) (0805,06) (0806,06) (0807,06) (0808,06) (0809,06)
(0810,06) (0811,06) (0812,06) (0813,06) (0814,06) (0815,06) (0816,06) (0817,06) (0818,06) (0819,06)
(0820,06) (0821,06) (0822,06) (0823,06) (0824,06) (0825,06) (0826,06) (0827,05) (0828,06) (0829,06)
(0830,06) (0831,06) (0832,06) (0833,06) (0834,05) (0835,06) (0836,06) (0837,06) (0838,06) (0839,06)
(0840,06) (0841,06) (0842,06) (0843,06) (0844,05) (0845,05) (0846,05) (0847,05) (0848,05) (0849,05)
(0850,05) (0851,05) (0852,05) (0853,05) (0854,05) (0855,05) (0856,05) (0857,05) (0858,05) (0859,05)
(0860,04) (0861,04) (0862,04) (0863,04)
"
Ik heb even onderzoek gedaan naar noise margin upstream/downstream en het blijkt dat deze waarden nogal laag zijn. ik heb ook vaak problemen met uitvallende verbindingen, soms enkele keren op een dag maar soms ook een week niet. Ik heb al ongeveer 4x de helpdesk gebeld, maar telkens zonder resultaat.
Enig idee wat er mis kan zijn?