gatekeeper.ppi.com, that manages interactions between internal company machines and the rest of the Internet.
can log into gatekeeper from internal machines using SSH and their
hardware authentication device. From gatekeeper, they can SSH to the
rest of the Internet. Internal machines are on a separate subnet
(188.8.131.52/24) and can exchange packets with gatekeeper but not with
the outside world. Machines on the outside Internet are not able to SSH
how to enforce this policy with simple (or stateless) packet filtering
on Router A and/or Router B. Describe the precise packet filtering rules
you would put in place at each router.
several days of this new policy, employees become annoyed that many
applications seem to lock up for periods of a minute or so. IT suspects
that the problem is caused by attempts to create TCP connections to the
outside world, which, instead of failing instantly, take approximately 1
minute. After all, clients' TCP implementations treat packets dropped
by the firewall policy just the same as packets dropped because of
congestion—they back off and keep trying. To solve the problem, the
administrators reconfigure their routers not just to drop packets
silently, but in certain cases to send packets back to the source of a
dropped packet. Describe precisely what the routers can send back to
make prohibited outgoing TCP connections fail quickly. (Assume they
cannot make any changes to the TCP implementation on clients.)
Remember to properly cite your sources according to APA guidelines.