A Gathering for Networking and Systems Professionals from Higher-Ed
Networking 101
2 thoughts on “Networking 101”
The title of this topic might be a bit misleading, but it’s as concise as we were able to get. We had one school suggest MSTP. Another mentioned physical layer topics. I’m interested in what people are doing with BCP38. And with the DNS root zone being signed, institutions’ firewalls may start causing problems. I’d like to take the time to gut-check how we’re all handling the basics.
The title of this topic might be a bit misleading, but it’s as concise as we were able to get. We had one school suggest MSTP. Another mentioned physical layer topics. I’m interested in what people are doing with BCP38. And with the DNS root zone being signed, institutions’ firewalls may start causing problems. I’d like to take the time to gut-check how we’re all handling the basics.
Do your firewalls allow DNS packets >512 bytes?
dig +norec +dnssec example.com @a.root-servers.net
Do your firewalls allow UDP fragments?
dig +norecurse +dnssec edns_large.netalyzr.icsi.berkeley.edu @n1.netalyzr.icsi.berkeley.edu