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NA Server (Server (Proxy (FTP Proxy, HTTP Proxy), Mail server (Install (…
NA Server
Server
DHCP Server
#
NAT Server
Proxy
FTP Proxy
HTTP Proxy
Mail server
Install
:red_flag: sudo apt install mailutils
MX record
NCTUCS.NET
DNS Server
Clients (lxc)
HostA
HostB
FTP Server
Firewall
Allow BSD connection to HostB's FTP & SSH (port 222 to 22)
Reject LINUX connection to HostB's FTP & SSH
Tools
netstat
-t
tcp
-u
udp
-l
listening
-p
programs
-n
don't resolve name
-N
resolve hardware name
-e
display more information
LDAP
#