From silva, 7 Months ago, written in Plain Text.
This paste is a reply to Telnet from silva - go back
Viewing differences between Telnet and Re: Telnet
I'm having this error when I try to test the connection to the port 1521 in another server.

telnet other_server 1521
Trying other_server ...
telnet: connect to address other_server: No route to host

Both firewallds are down

service firewalld status
Redirecting to /bin/systemctl status firewalld.service
? firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)

The port is Listening:

netstat -anp | grep 1521
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0* LISTEN 14487/tnslsnr
tcp 0 0 ESTABLISHED 14487/tnslsnr
tcp 0 0 ESTABLISHED 5865/ora_pmon_prote
Also, PING and SSH worked fine, is the port 1521 that is not responding.

MTR test on port 1521
mtr --port 1521 siroco.akainix.local

My traceroute [v0.85]
lebeche.akainix.local ( Wed Jan 16 10:53:01 2019
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. siroco.akainix.local 0.0% 16 0.2 0.3 0.2 0.3 0.0

traceroute test:

traceroute -p 1521 siroco.akainix.local
traceroute to siroco.akainix.local (, 30 hops max, 60 byte packets
1 siroco.akainix.local ( 0.201 ms !X 0.178 ms !X 0.160 ms !X

What else could be?