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| Name: xinetd-simple-services | Distribution: OpenMandriva Lx |
| Version: 2.3.15 | Vendor: OpenMandriva |
| Release: 15 | Build date: Thu Mar 24 16:14:30 2022 |
| Group: System/Base | Build host: huaweiomv4.rosalinux.ru |
| Size: 2776 | Source RPM: xinetd-2.3.15-15.src.rpm |
| Packager: bero_massbuild <bero+massbuild@lindev.ch> | |
| Url: http://www.xinetd.org | |
| Summary: Internal xinetd simple services | |
Internal xinetd simple services (not very useful one): - chargen Chargen is short for Character Generator and is a service that generates random characters either in one UDP packet containing a random number (between 0 and 512) of characters, or a TCP session. The UDP Chargen server looks for a UDP packet on port 19 and responds with the random character packet. With TCP Chargen, the server sends as a continuous stream of TCP packets once a connection is made, and until the session closes. The data is thrown away. Chargen is used to find the cause for dropped packets. It uses TCP/UDP port 19. An infiltrator can create a DoS attack by spoofing an IP address and causing two devices to send random traffic to each other. RFC 864 describes the Chargen service. - daytime The Daytime protocol is another testing tool and uses port 13 for both UDP and TCP versions. On receipt of a datagram to port 13, the server in the UDP version, sends the current date and time in ASCII format in a datagram. The TCP version, on receipt of a datagram to port 13, and once the connection is established, sends the date and time in ASCII format and closes the connection. RFC 867 describes the Daytime service. - echo Echo uses UDP and TCP port 7 and is used as a debgging tool to send any datagrams received from a source, back to that source. The risk with this is that someone who has access to the network can overload devices via the Echo service amounting to a DoS attack. RFC 862 describes the Echo service. - time - servers Show servers running - services Show available services - xadmin Show servers running and available services
BSD
/etc/xinetd.d/chargen /etc/xinetd.d/chargen-udp /etc/xinetd.d/daytime /etc/xinetd.d/daytime-udp /etc/xinetd.d/echo /etc/xinetd.d/echo-udp /etc/xinetd.d/services /etc/xinetd.d/time /etc/xinetd.d/time-udp
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Fabrice Bellet, Thu Nov 21 23:28:22 2024