Pessoal, tenho um servidor e nos log tem a as seguintes linhas abaixo: as mensagens sao de tentativas de fazer fazer conexao pelo ssh sem sucesso, posso ficar despreocupado ou sera que tem algum daemon instalado nesse servidor?..alguem pode me dizer o que significa tantas tentativas pelo ssh?..todos os dias tentam entrar no servidor.
Feb 6 19:13:56 servidor sshd[11435]: Did not receive identification string from 217.29.80.92
Feb 6 19:45:02 servidor sshd[11438]: Illegal user jordan from 217.29.80.92
Feb 6 19:45:02 servidor sshd[11438]: Failed password for illegal user jordan from 217.29.80.92 port 19962 ssh2
Feb 6 19:45:05 servidor sshd[11440]: Illegal user michael from 217.29.80.92
Feb 6 19:45:05 servidor sshd[11440]: Failed password for illegal user michael from 217.29.80.92 port 1719 ssh2
Feb 6 19:45:08 servidor sshd[11442]: Illegal user nicole from 217.29.80.92
Feb 6 19:45:08 servidor sshd[11442]: Failed password for illegal user nicole from 217.29.80.92 port 2231 ssh2
Feb 6 19:45:11 servidor sshd[11444]: Illegal user daniel from 217.29.80.92
Feb 6 19:45:11 servidor sshd[11444]: Failed password for illegal user daniel from 217.29.80.92 port 2664 ssh2
Feb 6 19:45:14 servidor sshd[11446]: Illegal user andrew from 217.29.80.92
Feb 6 19:45:14 servidor sshd[11446]: Failed password for illegal user andrew from 217.29.80.92 port 3373 ssh2
Feb 6 19:45:17 servidor sshd[11448]: Illegal user nathan from 217.29.80.92
Feb 6 19:45:17 servidor sshd[11448]: Failed password for illegal user nathan from 217.29.80.92 port 3859 ssh2