VPN browsing and logging into network issues

[colegul]

We have users connecting to a 3015 Concentrator over the Internet, using IPSec. The version is 2.5.2 for Client and Concentrator (upgrading now is not an option). Even though the clients get WINS, DNS, browsing the NT Domain at the corporate site is impossible; the same for logging into network; it works for Win95 if I enable it in Connection Properties, but asks me again if I want to access a share; for WinNT 4.0 or WinMe, 98, 2000 it doesn't at all.

If anybody knows a solution for all these problems I would really appreciate.

[j.joe]

Have you checked if your VPN IP traffic is allowed for some ports such as 135, 138, 139?

[colegul]

I don't know how can I check this for IPSec traffic. The private filter allows everything and the public one allows all IPSec traffic, which is normal.