Educause Security Discussion mailing list archives

Re: Guest wireless restrictions


From: David Curry <david.curry () NEWSCHOOL EDU>
Date: Mon, 29 Apr 2013 10:53:25 -0400

Thanks, Wole. To answer your questions:

1. What is the CALEA implication for your "guest" SSID?

The "guest" SSID will require authentication, either with NetID/password
(student/faculty/staff if we allow them) or a guest username and password
(created in a guest management system), so we should be okay CALEA-wise.

2. Where does your Wireless Access stand viz the rest of your network
architecture?

From the standpoint of firewall rules and whatnot, re're thinking the
"secure" SSID will be a "trusted" network (although we haven't decided all
the specifics of this trust yet) and the "guest" SSID will be an
"untrusted" network.

--Dave



--

*DAVID A. CURRY, CISSP* • DIRECTOR OF INFORMATION SECURITY

*THE NEW SCHOOL* • 55 W. 13TH STREET • NEW YORK, NY 10011

+1 212 229-5300 x4728 • david.curry () newschool edu



On Mon, Apr 29, 2013 at 10:37 AM, Dr. Wole Akpose <wole.akpose () morgan edu>wrote:

David,

As you think this through, you may want to consider the following:

1. What is the CALEA implication for your "guest" SSID?
2. Where does your Wireless Access stand viz the rest of your network
architecture?


*W. Akpose
*
*
*


On Mon, Apr 29, 2013 at 10:19 AM, David Curry <david.curry () newschool edu>wrote:


We're (still) in the process of thinking about how we want to split our
wireless network into two SSIDs, one for students/faculty/staff and one for
"guests" (in quotes because students and staff may be allowed to use it
too). We're thinking we want to do what a number of other schools have
done, and limit the "guest" SSID to a few protocols:

   - ICMP
   - HTTP and HTTPS
   - POP and IMAP in their SSL flavors only (no plaintext)
   - SMTP in its SSL and TLS flavors only (no plaintext)
   - VPN (IPSec, PPTP, L2TP)

which after Googling around a bit seems to be a pretty common set (some
also allow unencrypted POP/IMAP/SMTP, and others also allow various flavors
of chat/instant messaging).

We'd also like (we think) to limit individual user bandwidth on the guest
wireless, partly to cut down on the damage a "misbehaving" client can
cause, and partly to encourage students/faculty/staff to move over to the
"secure" SSID. Googling around on this topic, I've been able to find lots
of schools doing this, but very few that document what their limits
actually are.

So, two questions:

   1. If you limit the protocols on your guest wireless, is there
   anything not in the list above that you've found it necessary to allow?
   2. If you limit the bandwidth (speed) on your guest wireless, what
   are your download/upload limits (speeds), and what does that allow/not
   allow (e.g., streaming audio/video).

Thanks,

--Dave


--

*DAVID A. CURRY, CISSP* • DIRECTOR OF INFORMATION SECURITY

*THE NEW SCHOOL* • 55 W. 13TH STREET • NEW YORK, NY 10011

+1 212 229-5300 x4728 • david.curry () newschool edu




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