hi,

not sure if this is really a security topic or not, but i'm hoping someone can offer some advice on the following. i'm trying to obtain machine/device names and for some reason, the statement

Request.UserHostName is returing an IP address rather than the assigned device name.

i've checked the ipconfig of conecting clients to verify that DNS names do exist - and they do.

any thoughts? greatly appreciate any help. thx

-m

you checked by doing a reverse lookup from the server in question?

hi Atrax, thx for the reply. i did just that, using nslookup on the domain controller and successfully returned the assigned machine name(s) in the network.

really strange.

just found a fix for this, although i'm not sure why this is necessary to get it to work:

System.Net.Dns.GetHostByAddress(Request.UserHostAddress).Hostname

I have also been wondering this for a few years.  Have you found out why that extra step is necessary to get the host name?

Try this one for getting the host name - see  http://www.codeplex.com/IPAddressExtensions