What is TFTP?
Tftpd is a server which supports the Internet Trivial File Transfer Protocol (RFC 783). The TFTP server operates at the port indicated in the `tftp’ service description and the server is normally started by inetd or the latest xinetd.
The trivial file transfer protocol (TFTP) is a UDP-based file transfer program that is frequently used to allow diskless hosts to boot over the network. TFTP is implemented by the tftp client program and the tftpd server program. Because TFTP has no user authentication, it may be possible for unwanted file transfer to occur. It is a significant threat that tftp may be used to steal password files.Read More
What is Nagios?
Nagios® is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better. Nagios was originally designed to run under Linux, although it should work under most other unices as well.
Some of the many features of Nagios® include:
- Monitoring of network services (SMTP, POP3, HTTP, NNTP, PING, etc.).
- Monitoring of host resources (processor load, disk usage, etc.).
- Simple plugin design that allows users to easily develop their own service checks.
- Parallelized service checks.
- Ability to define network host hierarchy using “parent” hosts, allowing detection of and distinction between hosts that are down and those that are unreachable.
- Contact notifications when service or host problems occur and get resolved (via email, pager, or user-defined method).
- Ability to define event handlers to be run during service or host events for proactive problem resolution.
- Automatic log file rotation.
- Support for implementing redundant monitoring hosts.
- Optional web interface for viewing current network status, notification and problem history, log file, etc.
DNS Stands for Domain Name Service.On the Internet, the Domain Name Service (DNS) stores and associates many types of information with domain names; most importantly, it translates domain names (computer hostnames) to IP addresses. It also lists mail exchange servers accepting e-mail for each domain. In providing a worldwide keyword-based redirection service, DNS is an essential component of contemporary Internet use.
BIND (Berkeley Internet Name Domain) is an open reference implementation of the Domain Name System (DNS) protocol and provides a redistributable implementation of the major components of the Domain Name System.Read More