Hi, I'm quite new to this personal firewall thing and would like some
information from you experts :-)
I installed the Tiny Personal Firewall and used it for a few days.
When I establish a new internet dial-up modem connection, tiny
firewall alerts me that some application wants to send ICMP packet
(usually tcpkernel.exe) / or UDP-datagram (usually Maapp.exe) to some
server and vive-versa.
Can someone explain to me in simple words what ICMP packets and
UDP-datagrams are? What is their function? Are they vital or at least
useful for some purpose?
I recogn this is some sort of normal dialogue between the server I
dial in and my computer and nothing bad.
I didn't notice any connection problems after setting Tiny Firewall to
not allow any exchange of ICMP / UDP, so I wonder, what they are for.
Should I permit them or not?
Sorry for my bad English :-)