## <summary>DenyHosts SSH dictionary attack mitigation</summary>

## <desc>

##	

##	DenyHosts is a script intended to be run by Linux

##	system administrators to help thwart SSH server attacks

##	(also known as dictionary based attacks and brute force

##	attacks).

##	

## </desc>

########################################

## <summary>

##	Execute a domain transition to run denyhosts.

## </summary>

## <param name="domain">

## <summary>

##	Domain allowed to transition.

## </summary>

## </param>

#

interface(`denyhosts_domtrans', `

	gen_require(`

		type denyhosts_t, denyhosts_exec_t;

	')

	domtrans_pattern($1, denyhosts_exec_t, denyhosts_t)

')

########################################

## <summary>

##	Execute denyhost server in the denyhost domain.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed to transition.

##	</summary>

## </param>

#

interface(`denyhosts_initrc_domtrans', `

	gen_require(`

		type denyhosts_initrc_exec_t;

	')

	init_labeled_script_domtrans($1, denyhosts_initrc_exec_t)

')

########################################

## <summary>

##	All of the rules required to administrate

##	an denyhosts environment.

## </summary>

## <param name="domain">

##	<summary>

##	Domain allowed access.

##	</summary>

## </param>

## <param name="role">

##	<summary>

##	Role allowed access.

##	</summary>

## </param>

#

interface(`denyhosts_admin', `

	gen_require(`

		type denyhosts_t, denyhosts_var_lib_t, denyhosts_var_lock_t;

		type denyhosts_var_log_t, denyhosts_initrc_exec_t;

	')

	allow $1 denyhosts_t:process { ptrace signal_perms };

	ps_process_pattern($1, denyhosts_t)

	denyhosts_initrc_domtrans($1)

	domain_system_change_exemption($1)

	role_transition $2 denyhosts_initrc_exec_t system_r;

	allow $2 system_r;

	files_search_var_lib($1)

	admin_pattern($1, denyhosts_var_lib_t)

	logging_search_logs($1)

	admin_pattern($1, denyhosts_var_log_t)

	files_search_locks($1)

	admin_pattern($1, denyhosts_var_lock_t)

')