Experimental Physics and
Industrial Control System

"Leblanc, Gregory via Tech-talk" <tech-talk at aps.anl.gov> · Fri, 21 Apr 2023 20:09:25 +0000

Hi folks,

I've just installed CentOS 9 stream on a new machine here, then added on epics-base, calc, asyn, and StreamDevice from git.  I've also installed my work in progress for the Keysight 34980A mainframes, which speak SCPI.  All the EPICS bits work, but there's something screwy with the firewall.  When I do " $ pvget KS_34980A_EPICStestswitcherMagnetCurrent" it times out in 5 seconds.  "$ caget KS_34980A_EPICStestswitcherMagnetCurrent" works just fine.  I can turn the firewall off ($ sudo systemctl stop firewalld) and then pvget works fine.  I added ports 5064 and 5065 in both TCP and UDP to the rules for the firewall, but that didn't seem to help.   

Firewall rules:
$ sudo firewallcmd --list-all
[sudo] password for leblanc:
sudo: firewallcmd: command not found
[leblanc@epics1 ~]$ sudo firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: enp1s0
  sources:
  services: cockpit dhcpv6-client ssh
  ports: 5064/tcp 5065/tcp 5064/udp 5065/udp
  protocols:
  forward: yes
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:

I also used ss to see what ports pvget was trying to use

$ ss -antup |grep pvget
udp   UNCONN 0      0                0.0.0.0:45383      0.0.0.0:*     users:(("pvget",pid=49094,fd=3))
udp   UNCONN 0      0            224.0.0.128:5076       0.0.0.0:*     users:(("pvget",pid=49094,fd=6))
udp   UNCONN 0      0           10.0.255.255:5076       0.0.0.0:*     users:(("pvget",pid=49094,fd=5))
udp   UNCONN 0      0             10.0.0.239:5076       0.0.0.0:*     users:(("pvget",pid=49094,fd=4))

I'm not sure what else to try at this point.  Any pointers appreciated.
    Greg

--
Gregory Leblanc
Accelerator Engineer
Edwards Accelerator Lab - Ohio University
123 University Terrace
Athens, OH 45701 USA
leblanc at ohio.edu
M: (401) 52-OUAL1 or (401) 526-8251

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System