# CAIDA IPv4 subnet at UCSD
sshd : 192.172.226.0/24 : allow
# CAIDA IPv6 subnet at UCSD
sshd : [2001:48d0:101:501::]/64 : allow
# Private local IP addresses (RFC 1918)
sshd : 10.0.0.0/8 : allow
sshd : 172.16.0.0/12: allow
sshd : 192.168.0.0/16 : allow
# from the local ethernet (link local) via IPv6 (RFC 4291)
sshd : [fe80::]/10 : allow
# IPv4 localhost
sshd : 127.0.0.0/16 : allow
# IPv6 localhost
sshd : [::1]/128 : allow
# default deny
sshd : ALL : deny