1.)Диал ап подключен к провайдеру.
2.)192.168/16 это домашняя подсеть. Фтп клиенту скармливал и wan адрес адсл роутера но картина существенно не менялась, разве что в логах указывался адрес провайдера.
3.)wan_ip это адрес роутера за которым прячется фтп.Вот сейчас на работе опять же диал апом проверяю эти два состояния
1.)MasqueradeAddress включен
FileZilla log
Command: PASV
Response: 227 Entering Passive Mode (wan_ip,230,214).
Command: LIST
Error: Connection timed out
Error: Failed to retrieve directory listing
tcpdump 'port !22'
...
10:45:31.903292 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: . ack 1 win 8760
10:45:31.913925 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 1:24(23) ack 1 win 5840
10:45:32.045378 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 1:12(11) ack 24 win 8737
10:45:32.045533 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: . ack 12 win 5840
10:45:32.050640 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 24:56(32) ack 12 win 5840
10:45:32.181453 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 12:22(10) ack 56 win 8705
10:45:32.197662 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 56:82(26) ack 22 win 5840
10:45:32.322246 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 22:27(5) ack 82 win 8679
10:45:32.324875 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 82:116(34) ack 27 win 5840
10:45:32.470883 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 27:35(8) ack 116 win 8645
10:45:32.472687 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 116:135(19) ack 35 win 5840
10:45:32.600672 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 35:41(6) ack 135 win 8626
10:45:32.603722 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: P 135:187(52) ack 41 win 5840
10:45:32.757087 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: P 41:47(6) ack 187 win 8574
10:45:32.796470 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: . ack 47 win 5840
10:45:54.305749 IP host-static-212-0-220-130.moldtelecom.md.servergraph > 192.168.250.98.ftp: F 47:47(0) ack 187 win 8574
10:45:54.345443 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.servergraph: . ack 48 win 5840
2.)MasqueradeAddress выключен
FileZilla log
Command: PASV
Response: 227 Entering Passive Mode (192,168,250,98,231,33).
Status: Server sent passive reply with unroutable address. Passive mode failed.
Command: PORT 212,0,220,130,230,238
Response: 200 PORT command successful
Command: LIST
Response: 150 Opening ASCII mode data connection for file list
Response: 226 Transfer complete
Status: Calculating timezone offset of server...
Command: MDTM Chapter4.doc
Response: 213 20090424073339
Status: Timezone offsets: Server: 0 seconds. Local: 10800 seconds. Difference: 10800 seconds.
Status: Directory listing successful
tcpdump 'port !22'
...
10:53:45.464122 IP host-static-212-0-220-130.moldtelecom.md.propel-msgsys > 192.168.250.98.ftp: P 81:87(6) ack 284 win 8477
10:53:45.466789 IP 192.168.250.98.ftp-data > host-static-212-0-220-130.moldtelecom.md.59118: S 2236366077:2236366077(0) win 5840 <mss 1460,sackOK,timestamp 2756373239 0,nop,wscale 4>
10:53:45.469071 IP host-static-212-0-220-130.moldtelecom.md.propel-msgsys > 192.168.250.98.ftp: . ack 284 win 8477
10:53:45.503455 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.propel-msgsys: . ack 87 win 5840
10:53:45.557696 IP host-static-212-0-220-130.moldtelecom.md.propel-msgsys > 192.168.250.98.ftp: . ack 284 win 8477
10:53:45.620907 IP host-static-212-0-220-130.moldtelecom.md.59118 > 192.168.250.98.ftp-data: S 46124826:46124826(0) ack 2236366078 win 65535 <mss 1460,nop,wscale 2,nop,nop,timestamp 0 0,nop,nop,sackOK>
10:53:45.621075 IP 192.168.250.98.ftp-data > host-static-212-0-220-130.moldtelecom.md.59118: . ack 1 win 365 <nop,nop,timestamp 2756373393 0>
10:53:45.622559 IP 192.168.250.98.ftp > host-static-212-0-220-130.moldtelecom.md.propel-msgsys: P 284:338(54) ack 87 win 5840
10:53:45.627530 IP 192.168.250.98.ftp-data > host-static-212-0-220-130.moldtelecom.md.59118: P 1:344(343) ack 1 win 365 <nop,nop,timestamp 2756373400 0>
10:53:45.628667 IP 192.168.250.98.ftp-data > host-static-212-0-220-130.moldtelecom.md.59118: F 344:344(0) ack 1 win 365 <nop,nop,timestamp 2756373401 0>
10:53:45.798964 IP host-static-212-0-220-130.moldtelecom.md.59118 > 192.168.250.98.ftp-data: . ack 1 win 32768 <nop,nop,timestamp 49350 2756373393>
10:53:45.898654 IP host-static-212-0-220-130.moldtelecom.md.59118 > 192.168.250.98.ftp-data: . ack 345 win 32682 <nop,nop,timestamp 49351 2756373400>
10:53:45.908776 IP host-static-212-0-220-130.moldtelecom.md.59118 > 192.168.250.98.ftp-data: F 1:1(0) ack 345 win 32682 <nop,nop,timestamp 49351 2756373400>
10:53:45.908900 IP 192.168.250.98.ftp-data > host-static-212-0-220-130.moldtelecom.md.59118: . ack 2 win 365 <nop,nop,timestamp 2756373681 49351>
Сам пытался разобратся в логах tcpdump, но кроме того что в одном случае канал данных не поднимается а в другом да ничего не заметил.