Open, standard protocols are the core of the Internet, some, such as http – the Hypertext Transfer Protocol, are well known, others less well known. Several of these would help smooth the flow of information, make the Internet easier to use, more secure, or enable solutions to be shared more easily if they were more widely known and used.
These are the ones described here.
XMPP – Chat or Instant Messaging
OTP – One Time Passwords
CalDAV – Calendar sharing
CardDav – Address book sharing
PGP – signing or encrypting emails.
LDAP – user account data and much more
Kerberos – Security
Sieve – Sorting email
IMAP – reading email
Mailing lists
WebRTC – video conferencing.
Mail – plus addressing.
Network Ports
Many of these protocols are carried on different ‘Ports’ which allow the traffic to be divided into different types, in the same way a street may be divided into lanes for use by cars, buses, cyclists and pedestrians.
The gives the Internet the potential to work more efficiently, as the different programs, for example specialising in sending of receiving email will be simpler (and hence safer) then ones intended to send of receive information in the form of web pages – those can do the job, but as they have evolved to handle almost any traffic, are much more complex, and hence less secure, and require more resources.
If you find that some network related applications do not work for you in some places then there is a change that some network ports are being blocked by a Firewall at this location. There is a more detailed page on Network Ports and Firewalls, which you can point the manager of that network to (if you can find a way to contact them!).