Increase number of telnet sessions in Red Hat Enterprise Linux 7 and above

Solution Verified - Updated -

Issue

  • How to increase the number of connections available for the telnet socket unit under systemd

  • Seeing below errors in logs

    Oct 18 19:49:00 server systemd[1]: telnet.socket: Too many incoming connections (64), dropping connection.
Oct 18 19:49:00 server systemd[1]: telnet.socket: Too many incoming connections (64), dropping connection.
Oct 18 19:49:01 server systemd[1]: telnet.socket: Too many incoming connections (64), dropping connection.

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Components
    • systemd
    • telnet-server

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