Looking at the code and the MS docs it would appear that you are correct. The BOINC code uses the "hostent struct" (in client/hostinfo_network.C ) for detemining the IP and hostname. The host name is stored in the h_name field. From MS winsock docs:

h_name
Official name of the host (PC). If using the DNS or similar resolution system, it is the Fully Qualified Domain Name (FQDN) that caused the server to return a reply. If using a local hosts file, it is the first entry after the IP address.

I also found some CVS checkin notes from 2004 where Dr. Anderson said linux was reporting the FQDN and that this was not intended so he fixed it. Looks like this *might* be a bug in the windows BOINC client. Will have to look some more after work.

None of my windows machines report the domain name. On my linux machines, they do or don't, depending on how I have my /etc/hosts file set up. I'm pretty sure this is an OS configuration issue. All BOINC does is query the OS for its hostname. If the OS returns the full domain then BOINC includes it - otherwise it only reports the hostname without the domain.

So, ultimately, we have to decide for ourselves that we trust Matt, and Eric, and Rom, and David. What Phister Online has to do is decide if he can morally and legally trust them on behalf of this mystery customer -- especially if he's doing so without full disclosure.

Snip.....
I saw in the ranklist that the hosts on the leader are "hided". Maybee an moderator can give me more hints about that.

snip...

Like mmcaistro explained, only you can see the hostnames of your machines. The BOINC-Wiki should be able to tell you how to hide your machines, I can't remember.

PS: look under 'Your Account', 'Preferences' 'Seti@home Preferences' and change
'Should SETI@home show your computers on its web site?' to 'no'

I saw the hostnames listed in my stats......complete with the domain name.

Are this really needed ?

Only the hostname would be better for me.............the complete domain could be sometimes an indiscretion.

I know that normal visitor can't see it at my stats, but its still data that not must be sent over the firewall out of the network and furthermore it will be not needed for the project or i'm wrong ?

G'day Pfister

I had this problem once on a win98 box. The problem was one of the network configuration dialogues it asked for a domain name so I had entered the domain name (workgroup name) there. After clearing it from the dialogue/settings box it was no longer reported by BOINC. The box wasn't in a proper domain just a peer to peer network - I kept the domain name as the workgroup name, as it always had been and noticed no change in the performance of the network. I don't know how your network is configured but I would look down this avenue.

I'm not sure why this concerns you as only you can see it.
As for me, I like seeing the IP. It has helped me at times when I've needed to access that machine remotely.

(edited because I misread what you were saying)