computers:ssh_security
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Table of Contents
SSH security
Limit by user
Only allow required users to login.
Mac: in “System Preferences/Sharing/Remote Login”, choose users in the “Allow access for:” box.
Limit by IP address
# /etc/hosts.allow # allow Academia Sinica IPs (140.109.*.*) # allow intranet-ethernet IPs (192.168.1.*) # allow intranet-wireless IPs (10.0.1.*) sshd: 140.109., 192.168.1., 10.0.1. : allow
# /etc/hosts.deny # deny from all sshd: ALL
Check log files
Mac:
more /var/log/secure.log
Ubuntu:
more /var/log/auth.log
computers/ssh_security.1317018657.txt.gz · Last modified: 2011/09/26 14:30 by chkuo