Oczywiście że tak.
W ramach openssh można się łączyć z serwerem poprzez klienta sftp standardowo na porcie 22 (Subsystem sftp /usr/lib/openssh/sftp-server)
Ja mam uruchomione 2 osobne procesy sshd, każdy ma swój plik konfiguracyjny.
1. port 22 - połączenia tylko na ssh, subsystem sftp wyłączony, dostęp tylko z kilku adresów IP
2. porty 21, 2122 - połączenia tylko w ramach sftp ze wszystkich adresów IP, zezwolenie tylko na 1 użytkownika który nie ma dostępu do ssh, chroot-jail na konkretny katalog (Subsystem sftp internal-sftp)
Sprawdziłem i na porcie 21 standardowo nic nie jest u mnie uruchomione. Dopiero jak odpalę drugi proces sshd z osobnego pliku konfiguracyjnego odzywa się openssh.
Nie ma problemu aby dostać się na sftp przez port 21 z sieci lokalnej. Łączę się i otrzymuję listę katalogów.
Gdy jednak to samo próbuję zrobić z zewnątrz nie ukazują mi się żadne katalogi.
Iptables nie pokazuje dropów, z każdą próbą połączenia pokazuje kolejny otrzymany pakiet na port 21.
Kiedy łączę się na port 2122 wszystko działa jak należy, zarówno lokalnie jak i z zewnątrz.
Na ruterze przekierowania obydwu portów ustawione są identycznie.
Obydwa działają w ramach tego samego pliku konfiguracyjnego sshd.
Poniżej tcpdump dla połączeń na obydwa porty z zewnątrz (orange) i lokalnie dla portu 21.
Czy to może być kwestia blokowania portu 21 przez orange? Dodam że kilka dni przed zgłoszeniem połączenia na port 21 w ramach sftp działały ;/
port 21 z zewnątrz
Kod: Zaznacz cały
00:37:26.210549 IP public-gprs699848.centertel.pl.41535 > Hades.local.ftp: Flags [S], seq 3220845706, win 32120, options [mss 1220], length 0
00:37:26.210682 IP Hades.local.ftp > public-gprs699848.centertel.pl.41535: Flags [S.], seq 2494646757, ack 3220845707, win 14600, options [mss 1460], length 0
00:37:26.281509 IP public-gprs699848.centertel.pl.41535 > Hades.local.ftp: Flags [.], ack 1, win 32120, length 0
00:37:26.283562 IP public-gprs699848.centertel.pl.41535 > Hades.local.ftp: Flags [P.], seq 1:22, ack 1, win 32120, length 21
00:37:26.283656 IP Hades.local.ftp > public-gprs699848.centertel.pl.41535: Flags [.], ack 22, win 14600, length 0
00:37:26.301051 IP Hades.local.ftp > public-gprs699848.centertel.pl.41535: Flags [P.], seq 1:40, ack 22, win 14600, length 39
00:37:26.340991 IP public-gprs699848.centertel.pl.41535 > Hades.local.ftp: Flags [.], ack 40, win 32081, length 0
00:37:26.341079 IP Hades.local.ftp > public-gprs699848.centertel.pl.41535: Flags [P.], seq 40:1024, ack 22, win 14600, length 984
00:37:26.383005 IP public-gprs699848.centertel.pl.41535 > Hades.local.ftp: Flags [.], ack 1024, win 31136, length 0
port 2122 z zewnątrz
Kod: Zaznacz cały
00:41:20.973236 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [S], seq 816224687, win 5840, options [mss 1220,sackOK,TS val 12110122 ecr 0,nop,wscale 1], length 0
00:41:20.973338 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [S.], seq 606522559, ack 816224688, win 14480, options [mss 1460,sackOK,TS val 1213529 ecr 12110122,nop,wscale 4], length 0
00:41:21.040846 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 1, win 2920, options [nop,nop,TS val 12110246 ecr 1213529], length 0
00:41:21.044334 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1:22, ack 1, win 2920, options [nop,nop,TS val 12110246 ecr 1213529], length 21
00:41:21.044398 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 22, win 905, options [nop,nop,TS val 1213547 ecr 12110246], length 0
00:41:21.060224 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 1:40, ack 22, win 905, options [nop,nop,TS val 1213551 ecr 12110246], length 39
00:41:21.132047 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 40, win 2920, options [nop,nop,TS val 12110255 ecr 1213551], length 0
00:41:21.132145 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 40:1024, ack 22, win 905, options [nop,nop,TS val 1213569 ecr 12110255], length 984
00:41:21.258899 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 22:510, ack 40, win 2920, options [nop,nop,TS val 12110256 ecr 1213551], length 488
00:41:21.258972 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 1024, win 4368, options [nop,nop,TS val 12110266 ecr 1213569], length 0
00:41:21.298129 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 510, win 972, options [nop,nop,TS val 1213611 ecr 12110256], length 0
00:41:21.373716 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 510:534, ack 1024, win 4368, options [nop,nop,TS val 12110278 ecr 1213611], length 24
00:41:21.373782 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 534, win 972, options [nop,nop,TS val 1213629 ecr 12110278], length 0
00:41:21.378536 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 1024:1176, ack 534, win 972, options [nop,nop,TS val 1213631 ecr 12110278], length 152
00:41:21.457494 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 1176, win 5352, options [nop,nop,TS val 12110287 ecr 1213631], length 0
00:41:21.492002 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 534:678, ack 1176, win 5352, options [nop,nop,TS val 12110290 ecr 1213631], length 144
00:41:21.522568 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 1176:1896, ack 678, win 1039, options [nop,nop,TS val 1213667 ecr 12110290], length 720
00:41:21.642223 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 1896, win 6336, options [nop,nop,TS val 12110305 ecr 1213667], length 0
00:41:21.642300 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 678:694, ack 1896, win 6336, options [nop,nop,TS val 12110306 ecr 1213667], length 16
00:41:21.682132 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 694, win 1039, options [nop,nop,TS val 1213707 ecr 12110306], length 0
00:41:22.436125 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 694:738, ack 1896, win 6336, options [nop,nop,TS val 12110317 ecr 1213707], length 44
00:41:22.436218 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 738, win 1039, options [nop,nop,TS val 1213895 ecr 12110317], length 0
00:41:22.436373 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 1896:1940, ack 738, win 1039, options [nop,nop,TS val 1213895 ecr 12110317], length 44
00:41:22.519819 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 1940, win 6336, options [nop,nop,TS val 12110392 ecr 1213895], length 0
00:41:22.519917 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 738:798, ack 1940, win 6336, options [nop,nop,TS val 12110392 ecr 1213895], length 60
00:41:22.558132 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 798, win 1039, options [nop,nop,TS val 1213926 ecr 12110392], length 0
00:41:22.597768 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 1940:2000, ack 798, win 1039, options [nop,nop,TS val 1213935 ecr 12110392], length 60
00:41:22.677541 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 798:874, ack 2000, win 6336, options [nop,nop,TS val 12110408 ecr 1213935], length 76
00:41:22.677638 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 874, win 1039, options [nop,nop,TS val 1213955 ecr 12110408], length 0
00:41:22.799711 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2000:2028, ack 874, win 1039, options [nop,nop,TS val 1213986 ecr 12110408], length 28
00:41:22.893715 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 874:934, ack 2028, win 6336, options [nop,nop,TS val 12110429 ecr 1213986], length 60
00:41:22.893807 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 934, win 1039, options [nop,nop,TS val 1214009 ecr 12110429], length 0
00:41:22.894137 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2028:2072, ack 934, win 1039, options [nop,nop,TS val 1214010 ecr 12110429], length 44
00:41:23.103699 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 934:994, ack 2072, win 6336, options [nop,nop,TS val 12110438 ecr 1214010], length 60
00:41:23.104911 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2072:2144, ack 994, win 1039, options [nop,nop,TS val 1214062 ecr 12110438], length 72
00:41:23.192367 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 994:1038, ack 2144, win 6336, options [nop,nop,TS val 12110459 ecr 1214062], length 44
00:41:23.192816 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2144:2316, ack 1038, win 1039, options [nop,nop,TS val 1214084 ecr 12110459], length 172
00:41:23.265807 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1038:1082, ack 2316, win 7320, options [nop,nop,TS val 12110468 ecr 1214084], length 44
00:41:23.266221 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2316:2376, ack 1082, win 1039, options [nop,nop,TS val 1214103 ecr 12110468], length 60
00:41:23.362028 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1082:1126, ack 2376, win 7320, options [nop,nop,TS val 12110476 ecr 1214103], length 44
00:41:23.362359 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2376:2436, ack 1126, win 1039, options [nop,nop,TS val 1214127 ecr 12110476], length 60
00:41:23.437775 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1126:1170, ack 2436, win 7320, options [nop,nop,TS val 12110485 ecr 1214127], length 44
00:41:23.437972 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2436:2496, ack 1170, win 1039, options [nop,nop,TS val 1214145 ecr 12110485], length 60
00:41:23.516048 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1170:1214, ack 2496, win 7320, options [nop,nop,TS val 12110493 ecr 1214145], length 44
00:41:23.516255 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2496:2572, ack 1214, win 1039, options [nop,nop,TS val 1214165 ecr 12110493], length 76
00:41:23.589664 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1214:1274, ack 2572, win 7320, options [nop,nop,TS val 12110500 ecr 1214165], length 60
00:41:23.589956 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2572:2632, ack 1274, win 1039, options [nop,nop,TS val 1214183 ecr 12110500], length 60
00:41:23.703988 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1274:1334, ack 2632, win 7320, options [nop,nop,TS val 12110508 ecr 1214183], length 60
00:41:23.704812 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 2632:3108, ack 1334, win 1039, options [nop,nop,TS val 1214212 ecr 12110508], length 476
00:41:23.797584 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1334:1394, ack 3108, win 8304, options [nop,nop,TS val 12110521 ecr 1214212], length 60
00:41:23.797935 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 3108:3184, ack 1394, win 1039, options [nop,nop,TS val 1214235 ecr 12110521], length 76
00:41:23.882472 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1394:1454, ack 3184, win 8304, options [nop,nop,TS val 12110528 ecr 1214235], length 60
00:41:23.882881 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [P.], seq 3184:3244, ack 1454, win 1039, options [nop,nop,TS val 1214257 ecr 12110528], length 60
00:41:24.004147 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 3244, win 8304, options [nop,nop,TS val 12110541 ecr 1214257], length 0
00:41:31.604537 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [P.], seq 1454:1482, ack 3244, win 8304, options [nop,nop,TS val 12111132 ecr 1214257], length 28
00:41:31.605067 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [FP.], seq 1482:1558, ack 3244, win 8304, options [nop,nop,TS val 12111133 ecr 1214257], length 76
00:41:31.605558 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 1559, win 1039, options [nop,nop,TS val 1216187 ecr 12111132], length 0
00:41:31.607927 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [F.], seq 3244, ack 1559, win 1039, options [nop,nop,TS val 1216188 ecr 12111132], length 0
00:41:31.638722 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [FP.], seq 1454:1558, ack 3244, win 8304, options [nop,nop,TS val 12111274 ecr 1214257], length 104
00:41:31.638811 IP Hades.local.2122 > public-gprs699848.centertel.pl.38100: Flags [.], ack 1559, win 1039, options [nop,nop,TS val 1216196 ecr 12111274,nop,nop,sack 1 {1454:1559}], length 0
00:41:31.738969 IP public-gprs699848.centertel.pl.38100 > Hades.local.2122: Flags [.], ack 3245, win 8304, options [nop,nop,TS val 12111308 ecr 1216188], length 0
port 21 połączenie z sieci lokalnej na IP zewnętrzne (tak samo działa gdy wybieram ip wewnętrzne 192.168...)
Kod: Zaznacz cały
01:00:24.371505 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [S], seq 975118979, win 5840, options [mss 1460,sackOK,TS val 12151334 ecr 0,nop,wscale 2], length 0
01:00:24.371642 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [S.], seq 2584933253, ack 975118980, win 14480, options [mss 1460,sackOK,TS val 1499379 ecr 12151334,nop,wscale 4], length 0
01:00:24.375054 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 1, win 1460, options [nop,nop,TS val 12151334 ecr 1499379], length 0
01:00:24.375356 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1:22, ack 1, win 1460, options [nop,nop,TS val 12151334 ecr 1499379], length 21
01:00:24.375395 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 22, win 905, options [nop,nop,TS val 1499380 ecr 12151334], length 0
01:00:24.397158 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 1:40, ack 22, win 905, options [nop,nop,TS val 1499385 ecr 12151334], length 39
01:00:24.401161 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 40, win 1460, options [nop,nop,TS val 12151337 ecr 1499385], length 0
01:00:24.401247 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 40:1024, ack 22, win 905, options [nop,nop,TS val 1499386 ecr 12151337], length 984
01:00:24.403357 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 22:510, ack 40, win 1460, options [nop,nop,TS val 12151337 ecr 1499385], length 488
01:00:24.440813 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 1024, win 1952, options [nop,nop,TS val 12151341 ecr 1499386], length 0
01:00:24.440904 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 510, win 972, options [nop,nop,TS val 1499396 ecr 12151337], length 0
01:00:24.443875 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 510:534, ack 1024, win 1952, options [nop,nop,TS val 12151341 ecr 1499396], length 24
01:00:24.448611 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 1024:1176, ack 534, win 972, options [nop,nop,TS val 1499398 ecr 12151341], length 152
01:00:24.454032 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 1176, win 2444, options [nop,nop,TS val 12151342 ecr 1499398], length 0
01:00:24.472279 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 534:678, ack 1176, win 2444, options [nop,nop,TS val 12151344 ecr 1499398], length 144
01:00:24.501803 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 1176:1896, ack 678, win 1039, options [nop,nop,TS val 1499411 ecr 12151344], length 720
01:00:24.542116 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 1896, win 2936, options [nop,nop,TS val 12151351 ecr 1499411], length 0
01:00:24.578254 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 678:694, ack 1896, win 2936, options [nop,nop,TS val 12151354 ecr 1499411], length 16
01:00:24.618138 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 694, win 1039, options [nop,nop,TS val 1499441 ecr 12151354], length 0
01:00:24.621292 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 694:738, ack 1896, win 2936, options [nop,nop,TS val 12151359 ecr 1499441], length 44
01:00:24.621326 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 738, win 1039, options [nop,nop,TS val 1499441 ecr 12151359], length 0
01:00:24.621486 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 1896:1940, ack 738, win 1039, options [nop,nop,TS val 1499441 ecr 12151359], length 44
01:00:24.626128 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 1940, win 2936, options [nop,nop,TS val 12151359 ecr 1499441], length 0
01:00:24.627253 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 738:798, ack 1940, win 2936, options [nop,nop,TS val 12151359 ecr 1499441], length 60
01:00:24.666122 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 798, win 1039, options [nop,nop,TS val 1499453 ecr 12151359], length 0
01:00:24.698258 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 1940:2000, ack 798, win 1039, options [nop,nop,TS val 1499461 ecr 12151359], length 60
01:00:24.702664 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 798:874, ack 2000, win 2936, options [nop,nop,TS val 12151367 ecr 1499461], length 76
01:00:24.702712 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 874, win 1039, options [nop,nop,TS val 1499462 ecr 12151367], length 0
01:00:24.824184 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2000:2028, ack 874, win 1039, options [nop,nop,TS val 1499492 ecr 12151367], length 28
01:00:24.829826 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 874:934, ack 2028, win 2936, options [nop,nop,TS val 12151380 ecr 1499492], length 60
01:00:24.829880 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 934, win 1039, options [nop,nop,TS val 1499493 ecr 12151380], length 0
01:00:24.841015 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2028:2072, ack 934, win 1039, options [nop,nop,TS val 1499496 ecr 12151380], length 44
01:00:24.844954 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 934:994, ack 2072, win 2936, options [nop,nop,TS val 12151381 ecr 1499496], length 60
01:00:24.845526 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2072:2144, ack 994, win 1039, options [nop,nop,TS val 1499497 ecr 12151381], length 72
01:00:24.851773 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 994:1038, ack 2144, win 2936, options [nop,nop,TS val 12151382 ecr 1499497], length 44
01:00:24.851920 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2144:2316, ack 1038, win 1039, options [nop,nop,TS val 1499499 ecr 12151382], length 172
01:00:24.856876 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1038:1082, ack 2316, win 3428, options [nop,nop,TS val 12151382 ecr 1499499], length 44
01:00:24.857010 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2316:2376, ack 1082, win 1039, options [nop,nop,TS val 1499500 ecr 12151382], length 60
01:00:24.887177 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1082:1126, ack 2376, win 3428, options [nop,nop,TS val 12151385 ecr 1499500], length 44
01:00:24.887375 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2376:2436, ack 1126, win 1039, options [nop,nop,TS val 1499508 ecr 12151385], length 60
01:00:24.897050 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1126:1170, ack 2436, win 3428, options [nop,nop,TS val 12151386 ecr 1499508], length 44
01:00:24.897189 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2436:2496, ack 1170, win 1039, options [nop,nop,TS val 1499510 ecr 12151386], length 60
01:00:24.902464 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1170:1214, ack 2496, win 3428, options [nop,nop,TS val 12151387 ecr 1499510], length 44
01:00:24.902566 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2496:2572, ack 1214, win 1039, options [nop,nop,TS val 1499512 ecr 12151387], length 76
01:00:24.907661 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1214:1274, ack 2572, win 3428, options [nop,nop,TS val 12151387 ecr 1499512], length 60
01:00:24.907772 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2572:2632, ack 1274, win 1039, options [nop,nop,TS val 1499513 ecr 12151387], length 60
01:00:24.911959 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1274:1334, ack 2632, win 3428, options [nop,nop,TS val 12151388 ecr 1499513], length 60
01:00:24.912287 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 2632:3108, ack 1334, win 1039, options [nop,nop,TS val 1499514 ecr 12151388], length 476
01:00:24.917574 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1334:1394, ack 3108, win 3920, options [nop,nop,TS val 12151388 ecr 1499514], length 60
01:00:24.917739 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 3108:3184, ack 1394, win 1039, options [nop,nop,TS val 1499515 ecr 12151388], length 76
01:00:24.922150 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1394:1454, ack 3184, win 3920, options [nop,nop,TS val 12151389 ecr 1499515], length 60
01:00:24.922281 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [P.], seq 3184:3244, ack 1454, win 1039, options [nop,nop,TS val 1499517 ecr 12151389], length 60
01:00:24.960870 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 3244, win 3920, options [nop,nop,TS val 12151393 ecr 1499517], length 0
01:00:31.017979 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [P.], seq 1454:1482, ack 3244, win 3920, options [nop,nop,TS val 12151997 ecr 1499517], length 28
01:00:31.018349 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [FP.], seq 1482:1558, ack 3244, win 3920, options [nop,nop,TS val 12151997 ecr 1499517], length 76
01:00:31.018423 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [.], ack 1559, win 1039, options [nop,nop,TS val 1501041 ecr 12151997], length 0
01:00:31.020966 IP Hades.local.ftp > 89-73-xxx-xxx.dynamic.chello.pl.3147: Flags [F.], seq 3244, ack 1559, win 1039, options [nop,nop,TS val 1501041 ecr 12151997], length 0
01:00:31.023963 IP 89-73-xxx-xxx.dynamic.chello.pl.3147 > Hades.local.ftp: Flags [.], ack 3245, win 3920, options [nop,nop,TS val 12151998 ecr 1501041], length 0