We have two systems, call them A and B, on either side of a Cisco 1605-R
router/firewall. System A (NT) has two NICs, one connected to our
private WAN, the other only to the router. System B (VMS/UCX) is on an
isolated LAN segment but is jointly managed - i.e. people from another
organisation can get privileged access to B using system account on
console.
Is it technically possible to set up the router so that system A can
telnet (and preferably ftp) to system B, but not vice versa? That is,
we want to be able to login to B from A, but make sure nobody using B
can get into A. We have not been able to work out how to do it because
the telnet/ftp "reply" port numbers are not fixed.
If not with this setup, is there any way at all that this can be
achieved?
Jeremy Tinkler
Beaver Valley Systems
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