           -
   "      "    .

    ,   ,  -
 iptables   -L    service iptables status.

 iptables.        
         ,   -
 ,    :

# iptables --flush && iptables delete-chain

       ,  -
,      .    
  ,       iptables  -
  DROP ()   :

# /shin/service iptables panic

 :  
  system-config-securitylevel

   system-config-securitylevel (FEDORA)  redhat-config-
securitylevel (RHEL) (. 25.3)     .   
    ;       NFS. 
system-config-securitylevel   ;  SELinux   -
 "SELinux"  11.  Firewall Options ( )  
   ,  redhat-config-securitylevel,  
 .

 Securilv Level Configuration JBJEIH
.r-i 'I/CD- Please choose the security level for the system.
Ij^rewal! Options lISELI nux J
Security levd: | Enable fiwwall "
Trusted services'Trusted devices: Other ports; (1029:tcp)	 WWW (HTTP) I D FTP [a SSHa Tdnet j D Mail (SMTP)
	a snoD ethO
	---. --.:"
1 &1 J ~" ^ QK [

   Security level ( )   Enable
firewall ( ).  -
   (  Internet)
,    , 
     .

  ,   -
 ;   -
 ,    -
       -
 : HTTP (Web), FTP, SSH, TELNET
 SMTP ().

    
.  sitO   -
 ,   -
 IPv6 no IPv4;     
IPv6,     .
     -
,    
 Internet.    Other ports (
)     , -
   .

 25. iptables:   761

. 25.3.  Security Level Con-
figuration ( -
 )

