Planning Network Security
Starting with the Solaris Express 7/06 release, the generic installation has been changed so that all network services except Secure
Shell are disabled or restricted to respond to local requests only. This change
minimizes the potential vulnerabilities a remote attacker might try to exploit. In addition,
the change provides a base for customers to enable only the services they
require.
For Solaris Express releases, the hardening changes are automatically applied whenever a fresh
install is performed. This effect is achieved by invoking the netservices command from the
SMF upgrade file found in /var/svc/profile. Behavior is unchanged if the system is
upgraded.
Restricted Security Specifics
Numerous services are fully disabled. Other services are still enabled, but these services are
restricted to local connections only. The Secure Shell remains fully enabled.
For example, the following table lists network services that, for the Solaris 10
11/06 release, are restricted to local connections.
Table 4-6 Solaris 10 11/06 SMF Restricted Services
Service |
FMRI |
Property |
|---|
rpcbind |
svc:/network/rpc/bind |
config/local_only |
syslogd |
svc:/system/system-log |
config/log_from_remote |
sendmail |
svc:/network/smtp:sendmail |
config/local_only |
smcwebserver |
svc:/system/webconsole:console |
options/tcp_listen |
WBEM |
svc:/application/management/wbem |
options/tcp_listen |
X server |
svc:/application/x11/x11-server |
options/tcp_listen |
dtlogin |
svc:/application/graphical-login/cde-login |
dtlogin/args |
ToolTalk |
svc:/network/rpccde-ttdbserver:tcp |
proto=ticotsord |
dtcm |
svc:/network/rpccde-calendar-manager |
proto=ticits |
BSD print |
svc:/application/print/rfc1179:default |
bind_addr=localhost |
Revising Security Settings After Installation
With the restricted network security feature, all of the affected services are controlled
by the Service Management Framework (SMF). Any individual network service can be enabled
after an initial installation by using the svcadm and svccfg commands. The
netservices(1M) command can be used to switch the service startup behavior.
For further information about revising security settings, see How to Create an SMF Profile in System Administration Guide: Basic Administration. See also the
following man pages.
netservices(1M)
svcadm(1M)
svccfg(1M) commands.
