sylvar

On the off chance that someone will know what's going on here...

I'm trying to FTP a file to a server. At my console on helpdesk.tblc.org, I see this:


> ftp 128.222.117.50
Connected to 128.222.117.50.
[pause]
421 Service not available, remote server has closed connection

And here's what tcpdump sees:


# tcpdump -vv port ftp or ftp-data
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
12:59:38.662394 IP (tos 0x0, ttl  64, id 142, offset 0, flags [DF], proto 6, length: 60) helpdesk.tblc.org.59894 > 128.222.117.50.ftp: S [tcp sum ok] 3272299267:3272299267(0) win 5840 <mss 1460,sackOK,timestamp 2007454605 0,nop,wscale 2>
12:59:38.662563 IP (tos 0x0, ttl  64, id 39531, offset 0, flags [none], proto 6, length: 44) 128.222.117.50.ftp > helpdesk.tblc.org.59894: S [tcp sum ok] 2803279614:2803279614(0) ack 3272299268 win 16352 <mss 1460>
12:59:38.662586 IP (tos 0x0, ttl  64, id 144, offset 0, flags [DF], proto 6, length: 40) helpdesk.tblc.org.59894 > 128.222.117.50.ftp: . [tcp sum ok] 1:1(0) ack 1 win 5840
12:59:48.703604 IP (tos 0x0, ttl  64, id 39558, offset 0, flags [none], proto 6, length: 40) 128.222.117.50.ftp > helpdesk.tblc.org.59894: F [tcp sum ok] 1:1(0) ack 1 win 16352
12:59:48.703934 IP (tos 0x10, ttl  64, id 146, offset 0, flags [DF], proto 6, length: 40) helpdesk.tblc.org.59894 > 128.222.117.50.ftp: F [tcp sum ok] 1:1(0) ack 2 win 5840
12:59:48.704098 IP (tos 0x0, ttl  64, id 39559, offset 0, flags [DF], proto 6, length: 40) 128.222.117.50.ftp > helpdesk.tblc.org.59894: . [tcp sum ok] 2:2(0) ack 2 win 16351

6 packets captured
6 packets received by filter
0 packets dropped by kernel

So... anyone have any ideas what's going on here?