/etc/hosts.allow and /etc/hosts.deny
The two files used to control TCP wrappers are /etc/hosts.allow and /etc/hosts.deny. The hosts.allow file specifies which hosts are permitted to access network services, while the hosts.deny file specifies which hosts are denied access. TCP wrappers use these files to manage and restrict access to services based on the host's IP address or hostname.
tcp based protocols,internet protocol,sometimes file transfer protocol also supported by tcp wrappers. tcp is reliable and connection oriented.
all
"EXCEPT" command
When you want to configure a simple IP parameter for a network, use the command IPConfig. This is used for TCP/IP setups for business and residential networks by computer technicians.
Smtp and tcp/ip
TCP and UDP
HOSTS files
Server Message Block (SMB)
FTP uses TCP.Usage of Transport Layer protocol (tcp or udp) depends upon various applications.Such as FTP uses TCP, TFTP uses UDP.
In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.In the commonly used TCP/IP communications, that would either be a TCP header, or a UDP header.
TCP is usually used as full duplex, but in some case, half duplex can also be used in TCP.