FTP not working when antivirus enabled

[#1]

Hello all. I have a FGT-60 (2.8 MR5). When I enable a protection profile with antivirus scan for ftp, whenever I try to download a file, the connection is closed after a while. If I take out the protection profile, it works just fine. Any hints will be more than appreciated.

[#2]

I just installed MR6 of FortiOS 2.8 The problem remains. I' m pissed.

[#3]

[Deleted by Admins]

[#4]

Downloading a file from the internet to a client in my LAN.

[miblo_FTNT]

I can only confirm the same symptom on a FGT 300 in transparent mode with v2.80 MR5. MS FTP server on DMZ, clients on various (slow) connections. Download of large files terminate after about 35 MB (of 60 MB in this case). The server reports the file as successfully downloaded, but the client times out and only receives a part of the file. Turning off AV-scan on FTP is the (only) workaround so far. ~Mike

[#6]

[Deleted by Admins]

[#7]

We just opened a ticket for this same problem. FGT400 with 2.80MR6 running in transparent mode. Oversize Threshold set to 25mb and still cannot FTP an outbound file that is large (5-10mb). The only workaround is to turn off virus scan for FTP and then turn back on once the xfer is complete. Sounds like there' s a major bug that needs fixing. We were on build 2.50 and had NO problems with this. So much for upgrading...

[rb400]

we are having similar problems with our FGT400 with 2.80MR6 running in transparent mode. does anyone have any other suggestions for workarounds besides manually turning off virus protection? rb