WhatsApp сканирует сеть?
Совершенно случайно наткнулся на интересное: У меня дома стриггерился алерт: мой домашний сервачок (он же роутер) помимо всего прочего отслеживает количество уникальных от-forward’енных $src_ip + $dst_ip + $dst_port – и алертит, когда их количество превышает некоторый порог. И вот за последние сутки с моего телефона + телефона жены 2560 + 4082 уникальных пар $dst_ip + $dst_port (где 602x22 ниже – это соединения на 22 порт на 602 разных IP-адреса): kate-mobile.lan (4082 IP+port pairs): 3117 TCP (1534x443, 602x22, 261x80, 237x554, 220x53, 29x23, 28x983, 21x553, 20x179, 12x1443, 9x5222, 6x5228, 4x4460, 4x21, 2x571, 2x9243, 2x240, 2x383, 2x185, 2x260, 2x299, 2x237, 2x336, 2x131, 2x512, 1x464, 1x734, 1x4416, 1x371, 1x10, 1x863, 1x895, 1x759, 1x815, 1x178, 1x830, 1x271, 1x838, 1x707, 1x629, 1x174, 1x1003, 1x894, 1x3237, 1x887, 1x962, 1x603, 1x855, 1x241, 1x494, 1x540, 1x181, 1x352, 1x454, 1x373, 1x654, 1x56, 1x646, 1x175, 1x876, 1x810, 1x556, 1x395, 1x483, 1x697, 1x212, 1x34, 1x588, 1x348, 1x605, 1x680, 1x460, 1x401, 1x224, 1x143, 1x161, 1x104, 1x655, 1x872, 1x521, 1x459, 1x911, 1x705, 1x317, 1x377, 1x807, 1x323, 1x893, 1x866, 1x142, 1x1001, 1x170, 1x920, 1x843, 1x209, 1x463, 1x156, 1x569, 1x952, 1x701, 1x184, 1x597, 1x389, 1x647, 1x8543, 1x487, 1x624, 1x537, 1x814, 1x259, 1x578, 1x26, 1x904, 1x751, 1x652, 1x795, 1x234, 1x671, 1x45, 1x4477, 1x307, 1x635, 1x651, 1x227, 1x806, 1x752, 1x203, 1x220, 1x582, 1x568, 1x153, 1x844, 1x402), 965 UDP (379x443, 278x53, 116x554, 83x123, 38x22, 22x23, 7x2002, 6x983, 4x179, 2x4123, 2x512, 2x21, 2x553, 1x363, 1x652, 1x654, 1x1003, 1x299, 1x307, 1x377, 1x680, 1x807, 1x804, 1x966, 1x685, 1x240, 1x463, 1x655, 1x806, 1x45, 1x383, 1x336, 1x153, 1x260, 1x28, 1x241, 1x603) mobile.lan (2560 IP+port pairs): 1899 TCP (814x443, 405x22, 171x554, 168x80, 160x53, 23x983, 18x179, 18x1443, 15x23, 10x553, 9x5222, 6x21, 5x7275, 3x5228, 2x19302, 1x759, 1x37, 1x629, 1x685, 1x581, 1x582, 1x10000, 1x142, 1x250, 1x846, 1x125, 1x872, 1x657, 1x8543, 1x604, 1x90, 1x727, 1x567, 1x911, 1x739, 1x810, 1x4477, 1x866, 1x26, 1x491, 1x10, 1x156, 1x626, 1x178, 1x422, 1x977, 1x155, 1x12, 1x402, 1x683, 1x21007, 1x306, 1x595, 1x184, 1x4416, 1x472, 1x14, 1x904, 1x166, 1x165, 1x753, 1x988, 1x4434, 1x11, 1x28, 1x317, 1x622, 1x535, 1x718, 1x686, 1x637, 1x207, 1x244, 1x153, 1x7000, 1x8443, 1x966, 1x383, 1x5223, 1x985, 1x161, 1x994, 1x395, 1x898, 1x39, 1x592, 1x6447), 661 UDP (307x443, 168x53, 81x554, 36x123, 24x22, 10x23, 6x983, 6x179, 4x19302, 3x553, 3x21, 1x153, 1x685, 1x626, 1x155, 1x592, 1x19000, 1x491, 1x306, 1x472, 1x125, 1x8443, 1x28, 1x966) Поставил себе PCAPdroid на телефон, и выяснилось, что WhatsApp (я им совсем не пользуюсь – установлен по необходимости): ...