Re: IOC in Docker not responding to caget from another host

[Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov>]

On 11/5/21 10:53 AM, Paduan Donadio, Marcio wrote:
> Michael, this idea of using telnet was very useful. I ended up discovering that the firewall was blocking port 5064 in Ubuntu1. I've opened the port, could connect through telnet, but caget still refuses to communicate. I've tried both the broadcast address and Ubuntu1 specific IP in EPICS_CA_ADDR_LIST.

Failure to connect w/ 'telnet' is good indication of a firewall problem.  However, success only tells you that TCP traffic can get through.  You also need to open up 5064 (and should open 5065) for UDP traffic.