I am trying Junos Pulse on Android.
However, it seems I can't connect to other servers (in the Intranet) through VPN.
According to datasheet, Android has Email and web access only.
Does it mean that Android can't connect through VPN?
Or particular configuration should be doned for it?
You read the data sheet correctly. The bottm line is that OS level support for the connection is simply not in Android yet. See this long previous thread on the topic.
Which ends with this note from ZanyTerp:
Here is a link for adding L3 VPN support into Android for application developers for any who would like to help and star this request: