libcommons-net-java - 3.6-1+deb10u1 main

The Apache Commons Net library implements the client side of many basic
Internet protocols. The purpose of the library is to provide fundamental
protocol access, not higher-level abstractions. Therefore, some of the
design violates object-oriented design principles. The philosophy is to
make the global functionality of a protocol accessible (e.g., TFTP send
file and receive file) when possible, but also provide access to the
fundamental protocols where applicable so that a programmer may construct
his own custom implementations (e.g, the TFTP packet classes and the TFTP
packet send and receive methods are exposed).
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The supported protocols include:
* FTP/FTPS
* FTP over HTTP (experimental)
* NNTP
* SMTP(S)
* POP3(S)
* IMAP(S)
* Telnet
* TFTP
* Finger
* Whois
* rexec/rcmd/rlogin
* Time (rdate) and Daytime
* Echo
* Discard
* NTP/SNTP