Belkin Router F5D5231-4 User Manual

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Configuring Virtual Servers
The  “Virtual  Servers”  function  will  allow  you  to  route  external  (Internet) 
calls  for  services  such  as  a  web  server  (port  80),  FTP  server  (Port  21),  or 
other  applications  through  your  Router  to  your  internal  network.  Since 
your  internal  computers  are  protected  by  a  firewall,  machines  from  the 
Internet  cannot  get  to  them  because  they...

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Setting Client IP Filters
The  Router  can  be  configured  to  restrict  access  to  the  Internet,  email, 
or  other  network  services  at  specific  days  and  times.  Restriction 
can  be  set  for  a  single  computer,  a  range  of  computers,  or  multiple 
computers. 
To  restrict  Internet  access  to  a  single  computer  for  example,  enter 
the  IP  address  of  the  computer  you...

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Setting MAC Address Filtering 
The  MAC  address  filter  is  a  powerful  security  feature  that  allows 
you  to  specify  which  computers  are  allowed  on  the  network.  Any 
computer  attempting  to  access  the  network  that  is  not  specified  in 
the  filter  list  will  be  denied  access.  When  you  enable  this  feature,  you 
must  enter  the  MAC  address  of  each  client  on  your  network...

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Enabling the Demilitarized Zone (DMZ) 
The  DMZ  feature  allows  you  to  specify  one  computer  on  your  network 
to  be  placed  outside  of  the  firewall.  This  may  be  necessary  if  the 
firewall  is  causing  problems  with  an  application  such  as  a  game  or 
video  conferencing  application.  Use  this  feature  on  a  temporary  basis. 
The  computer  in  the  DMZ  is NOT...

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WAN Ping  Blocking
Computer  hackers  use  what  is  known  as  “pinging”  to  find  potential 
victims  on  the  Internet.  By  pinging  a  specific  IP  address  and  receiving 
a  response  from  the  IP  address,  a  hacker  can  determine  that 
something  of  interest  might  be  there.  The  Router  can  be  set  up  so  it 
will  not  respond  to  an  ICMP  ping  from  the  outside.  This  heightens  the...

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Utilities Tab
This  screen  lets  you  manage  different  parameters  of  the  Router  and 
perform  certain  administrative  functions. 
Restarting the Router
Sometimes  it  may  be  necessary  to  restart  or  reboot  the  Router  if  it 
begins  working  improperly.  Restarting  or  rebooting  the  Router  will 
NOT  delete  any  of  your  configuration  settings.  

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Restarting the Router to Restore Normal Operation
1.  Click  the  “Restart  Router”  button.
2. The  following  message  will  appear.  Click  “OK”.
3. The  following  message  will  appear.  Restarting  the  Router  can 
take  up  to  60  seconds.  It  is  important  not  to  turn  off  the  power  to 
the  Router  during  the  restart.  Click  “OK”.
4. A  60-second  countdown  will  appear  on  the  screen....

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Restoring Factory Default Settings
Using  this  option  will  restore  all  of  the  settings  in  the  Router  to  the 
factory  (default)  settings.  It  is  recommended  that  you  back  up  your 
settings  before  you  restore  all  of  the  defaults.
1. Click  the  “Restore  Defaults”  button.
2. The  following  message  will  appear.  Click  “OK”.
3. The  following  message  will  appear....

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Saving a Current Configuration
You  can  save  your  current  configuration  by  using  this  feature.  Saving 
your  configuration  will  allow  you  to  restore  it  later  if  your  settings  are 
lost  or  changed.  It  is  recommended  that  you  back  up  your  current 
configuration  before  performing  a  firmware  update.
1. Click  “Save”.  A  window  called  “File  Download”  will  open.  
Click...

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3. When  the  save  is  complete,  you  will  see  the  window  below. 
Click  “Close”.
The  configuration  is  now  saved.
Restoring a Previous Configuration
This  option  will  allow  you  to  restore  a  previously  saved  configuration.
1. Click  “Browse” .  A  window  will  open  that  allows  you  to  select  the 
location  of  the  configuration  file.  All  configuration  files  end...