Aug 18, 2013 · I suddenly came across the term "ephemeral port" in a Linux article that I was reading, but the author did not mention what it is. What is an ephemeral port in UNIX?

Jun 23, 2015 · The default set of ports that Mesos advertises is 31000-32000. This avoids a clash with the default Linux ephemeral port range of 32768-61000. Notably, Mesos doesn't know about whether …

Jun 26, 2017 · As for ephemeral ports: The Internet Assigned Numbers Authority (IANA) suggests the range 49152 to 65535 (2 15 +2 14 to 2 16 −1) for dynamic or private ports. Many Linux kernels use …

Feb 2, 2013 · After digging a bit I found that it happens when we or the server (same behavior in both cases) closes the connection with an RST packet and we then reuse the same ephemeral source …

However, ephemeral port selection algorithms should use the whole range 1024-65535." -- It sounds like the value of ip_local_port_range should not be used anyway.

Jan 27, 2023 · Thanks for that. In the end I installed all gstream dpendencies from gstream web because there were a bunch o other dependencies not met.

Apr 26, 2016 · I want to control the ephemeral port range for IPv6, but there seems to be no such file under /proc/sys/net/ipv6. Does the setting for IPv4 apply to IPv6 connections as well?

Sep 27, 2018 · "unrestricted access to UDP port 123 in both directions" may be confusing to those used to replies coming to ephemeral (higher-numbered) ports. Apparently, NTP datagrams use 123 both …

I'm trying to configure firewalld (Fedora 21) so that responses get through for MDNS queries sent from a client application using an ephemeral UDP source port to a multicast target. The responses are

Nov 26, 2025 · This seems like a really good way to tank system performance by repeatedly running xsel and cmp and a bunch of ephemeral shells continuously in a never-ending shell loop. The only …