Host-Specific Subconfiguration
 The host-specific configuration files are configured with the 
HostSpecificConfig variable. These files are read immediately after a 
new process is launched to handle the connection. Thus most configuration 
options can be set in these. The syntax is the following:
 
HostSpecificConfig pattern subconfig-file
 
 pattern will be used to match the client host as specified under 
AllowHosts
on the sshd2_subconfig man page. 
The file subconfig-file will then be read, and configuration data 
amended accordingly.
 The file is read before any actual protocol transactions begin, and you 
can specify most of the options allowed in the main configuration file. 
You can specify more than one subconfiguration file, in which case the 
patterns are matched and the files read in the specified order. Values of 
configuration options defined later will either override or amend the 
previous value depending on the option. The effect of redefining an option 
is described in the documentation for that option. For example, setting 
Ciphers in the subconfiguration file will override the old value, 
but setting AllowUsers will amend the value. 
 Example 1: The following matches (from) any host:
 
HostSpecificConfig   .*   /etc/ssh2/subconfig/host_ext.conf
  | 
 Example 2: The following matches a subnet mask:
 
HostSpecificConfig   \m192.168.0.0/16   /etc/ssh2/subconfig/host_int.conf
  | 
 For more information, please see the sshd2_subconfig and 
sshd2_config man page.