このサーバーにSSHでログインを試みている、とあるログを眺める。
Jan 25 23:55:35 localhost sshd[7454]: Invalid user tsuyoshi from 125.250.191.29
Jan 25 23:55:35 localhost sshd[7454]: error: Could not get shadow information for NOUSER
Jan 25 23:55:35 localhost sshd[7454]: Failed password for invalid user tsuyoshi from 125.250.191.29 port 60069 ssh2
Jan 25 23:55:37 localhost sshd[7457]: Invalid user iiduka from 125.250.191.29
Jan 25 23:55:37 localhost sshd[7457]: error: Could not get shadow information for NOUSER
Jan 25 23:55:37 localhost sshd[7457]: Failed password for invalid user iiduka from 125.250.191.29 port 60312 ssh2
Jan 25 23:55:38 localhost sshd[7460]: Invalid user rsyuji from 125.250.191.29
Jan 25 23:55:38 localhost sshd[7460]: error: Could not get shadow information for NOUSER
Jan 25 23:55:38 localhost sshd[7460]: Failed password for invalid user rsyuji from 125.250.191.29 port 60432 ssh2
Jan 25 23:55:39 localhost sshd[7463]: Invalid user keiko from 125.250.191.29
Jan 25 23:55:39 localhost sshd[7463]: error: Could not get shadow information for NOUSER
Jan 25 23:55:39 localhost sshd[7463]: Failed password for invalid user keiko from 125.250.191.29 port 60594 ssh2
Jan 25 23:55:41 localhost sshd[7466]: Invalid user kinoshit from 125.250.191.29
Jan 25 23:55:41 localhost sshd[7466]: error: Could not get shadow information for NOUSER
Jan 25 23:55:41 localhost sshd[7466]: Failed password for invalid user kinoshit from 125.250.191.29 port 60620 ssh2
Jan 25 23:55:42 localhost sshd[7469]: Invalid user mito from 125.250.191.29
Jan 25 23:55:42 localhost sshd[7469]: error: Could not get shadow information for NOUSER
Jan 25 23:55:42 localhost sshd[7469]: Failed password for invalid user mito from 125.250.191.29 port 60865 ssh2
Jan 25 23:55:43 localhost sshd[7472]: Invalid user kkamimur from 125.250.191.29
Jan 25 23:55:43 localhost sshd[7472]: error: Could not get shadow information for NOUSER
Jan 25 23:55:43 localhost sshd[7472]: Failed password for invalid user kkamimur from 125.250.191.29 port 60973 ssh2
Jan 25 23:55:44 localhost sshd[7475]: Invalid user ikouge from 125.250.191.29
Jan 25 23:55:44 localhost sshd[7475]: error: Could not get shadow information for NOUSER
Jan 25 23:55:44 localhost sshd[7475]: Failed password for invalid user ikouge from 125.250.191.29 port 60997 ssh2
Jan 25 23:55:45 localhost sshd[7478]: Invalid user iikougeiikouge from 125.250.191.29
Jan 25 23:55:45 localhost sshd[7478]: Failed none for invalid user iikougeiikouge from 125.250.191.29 port 32918 ssh2
Jan 25 23:55:46 localhost sshd[7481]: Invalid user fagan from 125.250.191.29
Jan 25 23:55:46 localhost sshd[7481]: error: Could not get shadow information for NOUSER
Jan 25 23:55:46 localhost sshd[7481]: Failed password for invalid user fagan from 125.250.191.29 port 33155 ssh2
Jan 25 23:55:48 localhost sshd[7484]: Invalid user twakabayashi from 125.250.191.29
Jan 25 23:55:48 localhost sshd[7484]: error: Could not get shadow information for NOUSER
Jan 25 23:55:48 localhost sshd[7484]: Failed password for invalid user twakabayashi from 125.250.191.29 port 33272 ssh2
Jan 25 23:55:49 localhost sshd[7487]: Invalid user inoue from 125.250.191.29
Jan 25 23:55:49 localhost sshd[7487]: error: Could not get shadow information for NOUSER
Jan 25 23:55:49 localhost sshd[7487]: Failed password for invalid user inoue from 125.250.191.29 port 33302 ssh2
Jan 25 23:55:51 localhost sshd[7490]: Invalid user yoneda from 125.250.191.29
Jan 25 23:55:51 localhost sshd[7490]: error: Could not get shadow information for NOUSER
Jan 25 23:55:51 localhost sshd[7490]: Failed password for invalid user yoneda from 125.250.191.29 port 33466 ssh2
Jan 25 23:55:52 localhost sshd[7493]: Invalid user oneda from 125.250.191.29
Jan 25 23:55:52 localhost sshd[7493]: error: Could not get shadow information for NOUSER
Jan 25 23:55:52 localhost sshd[7493]: Failed password for invalid user oneda from 125.250.191.29 port 33771 ssh2
なんか、ところどころで日本人の名前をユーザー名にしてますね(^^;;
残念ながら、うちのサーバーにはイノウエさんもケイコさんもヨネダさんも、居られませんです。
コメント
125.250.191.29って。
ふむ、韓国からのようですね。