The Internet Engineering Task Force (IETF) has directed the Internet Assigned Numbers Authority (IANA) to reserve the following IPv4 address ranges for private networks:[1](p4)

RFC1918 nameIP address rangeNumber of addressesLargest CIDR block (subnet mask)Host ID sizeMask bitsClassful description[Note 1]
24-bit block10.0.0.0 – 10.255.255.2551677721610.0.0.0/8 (255.0.0.0)24 bits8 bitssingle class A network
20-bit block172.16.0.0 – 172.31.255.2551048576172.16.0.0/12 (255.240.0.0)20 bits12 bits16 contiguous class B networks
16-bit block192.168.0.0 – 192.168.255.25565536192.168.0.0/16 (255.255.0.0)16 bits16 bits256 contiguous class C networks

In practice, it is common to subdivide these ranges into smaller subnets.


192.168.x.x is a private subnet 

192.83.x.x in a public subnet




Le dim. 20 déc. 2020 à 11:37, ARS W5OMR <ars.w5omr@gmail.com> a écrit :
just saw this in my konsole...
[Dec 20 09:37:34] NOTICE[585]: chan_iax2.c:9712 socket_process: Registration of '29655' rejected: 'Password incorrect' from: '192.83.199.4'

I know 192.xx.xxx is an internal address, so... what the hell?

--

73 = Best Regards,
-Geoff/W5OMR
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