The question appeared in newsgroup. After looking here - Webmin by default is configured to leten on localhost only, but appears to listen on every interface:
miniserv.conf:
port=10000
host=localhost.localdomain
but
{pts/0}# lsof -i | grep 10000
miniserv. 2340 root 3u IPv4 4321 TCP *:10000 (LISTEN)
miniserv. 2340 root 4u IPv4 4322 UDP *:10000
{pts/0}# netstat -a | grep 10000
tcp 0 0 *:10000 *:*
LISTEN
udp 0 0 *:10000 *:*
Oh, and what this UDP port 10000 is for?
-andrej
