From Ysul or a jail:
$ mysql -h 212.83.187.132
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0
From Dwellers:
$ docker run -it --rm nasqueron/mysql bash
$ mysql -h ysul.nasqueron.org
Access denied for user 'root'@'dwellers.nasqueron.org' (using password: NO)
Strangely, localhost works, ysul.nasqueron.org from another server works but not internally.
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | dereckson | T733 Mumble server: libIce.so.35 not found on Ysul | |||
| Resolved | dereckson | T736 Move mumble.nasqueron.org to a jail | |||
| Resolved | dereckson | T738 Allow remote connection to Ysul MySQL server |
Diagonostic
Our own IP has been blacklisted by sshguard after an user failed several times to connect to localhost, having SSH agent difficulties.
Resolution
Ysul public IPv4 has been added to /usr/local/etc/sshguard.whitelist.