Does RHEL support reserving local ports from ephemeral range using the /proc/sys/net/ipv4/ip_local_reserved_ports tunable?

Solution Verified - Updated -

Issue

  • Some applications whose port ranges conflict with the default ephemeral port range use ip_local_port_range
  • What is the maximum characters support for ip_local_reserved_ports
  • How to reserve port for third-party application?
  • How to configure tcp_smallest_anon_port and tcp_largest_anon_port in RHEL? these are tunable options on HP-UX and Solaris

Environment

  • Red Hat Enterprise Linux (RHEL) 5, 6, 7, 8 and 9

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