Remove an ip banned by denyhosts
30 October, 2009Denyhosts is a great tool to secure ssh accesses. Accidentally, from time to time an IP address from a valid user is banned (guys, use public key ssh authentication!). Removing an IP address from denyhosts ban lists is painful. You have to edit six files. So this small script comes to rescue and eliminates the pain. Let me introduce you to unban-ip
#!/usr/bin/env ruby
base_path="/var/lib/denyhosts"
hosts_deny="/etc/hosts.deny"
denyhosts_files=%w(hosts hosts-restricted hosts-root hosts-valid users-hosts)
files=denyhosts_files.map{|file| "#{base_path}/#{file}"}.push hosts_deny
denyhosts_stop="/etc/init.d/denyhosts stop"
denyhosts_start="/etc/init.d/denyhosts start"
if ARGV.length!= 1
puts "Wrong number of arguments"
puts "Usage: denyhosts-remove ip"
else
`#{denyhosts_stop}`
ip=ARGV[0]
files.each do |file|
text=File.read(file)
if file == hosts_deny
buffer=text.gsub(/sshd: #{ip}\n/,"")
else
buffer=text.gsub(/#{ip}:(.*)\n/,"")
end
File.open(file,"w") {|fw| fw.write buffer }
end
`#{denyhosts_start}`
end
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Molando, para cuando denyhosts te la lía :)