KEYINFO ACK

[Irfan]

Hai Dennis

can't uftp send multicast without keyinfo_ack?

tq

[Dennis Bush]

The KEYINFO_ACK message is used to set up an encrypted connection in both unicast and multicast mode. If you don't send with encryption, that message is not sent.

[Irfan]

oh oke, but cant uftp send file without encryption to client pc.

[Dennis Bush]

The -Y option to uftp enables encryption. Without it, the session in unencrypted.

[Irfan]

if i not use -Y i have error

[root@uftpd-cent6 ~]# uftp /opt/video/sawvi_480p.mov
UFTP version 4.5.1 Copyright (C) 2001-2014 Dennis A. Bush
Starting at Mon Jun 24 10:10:20 2019
Transfer rate: 1000 Kbps (125 KB/s)
Wait between packets: 10562 us
Using private multicast address 230.5.5.51 Group ID: 318C3282
Initializing group
Sending ANNOUNCE 1
Transfer aborted by C0A86331: No unencrypted transfers allowed
Transfer aborted by C0A86333: No unencrypted transfers allowed
Transfer aborted by 00000001: No unencrypted transfers allowed
Transfer aborted by C0A8632E: No unencrypted transfers allowed
Sending ANNOUNCE 2

for client side

[root@client1 ~]# tail -f /var/log/uftpd.log
2019/06/24 21:10:38.773162: [318C3282:0]: No unencrypted transfers allowed
2019/06/24 21:10:38.773290: [318C3282:0]: Writing restart file
2019/06/24 21:10:40.274762: [318C3282:0]: No unencrypted transfers allowed
2019/06/24 21:10:40.274869: [318C3282:0]: Writing restart file
2019/06/24 21:10:41.775100: [318C3282:0]: No unencrypted transfers allowed
2019/06/24 21:10:41.775228: [318C3282:0]: Writing restart file
2019/06/24 21:10:43.276518: [318C3282:0]: No unencrypted transfers allowed
2019/06/24 21:10:43.276640: [318C3282:0]: Writing restart file
2019/06/24 21:10:44.777967: [318C3282:0]: No unencrypted transfers allowed
2019/06/24 21:10:44.778106: [318C3282:0]: Writing restart file

and how disabled client site for allow non encryption file from server.

[Dennis Bush]

The client will only allow encrypted transfers if -E is specified. Removing that option from the client will allow unencrypted transfers.