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Re: Make a DHCP server using Fedora - Help



--- On Sat, 11/15/08, Craig White <craigwhite azapple com> wrote:

> From: Craig White <craigwhite azapple com>
> Subject: Re: Make a DHCP server using Fedora - Help
> To: "Community assistance, encouragement, and advice for using Fedora." <fedora-list redhat com>
> Date: Saturday, November 15, 2008, 10:20 AM
> On Sat, 2008-11-15 at 11:11 -0700, Craig White wrote:
> > On Sat, 2008-11-15 at 09:48 -0800, Antonio Olivares
> wrote:
> > > --- On Sat, 11/15/08, edwardspl ita org mo
> <edwardspl ita org mo> wrote:
> > > 
> > > > From: edwardspl ita org mo
> <edwardspl ita org mo>
> > > > Subject: Re: Make a DHCP server using Fedora
> - Help
> > > > To: olivares14031 yahoo com, "Community
> assistance, encouragement, and advice for using
> Fedora." <fedora-list redhat com>
> > > > Date: Saturday, November 15, 2008, 7:06 AM
> > > > Antonio Olivares wrote:
> > > > 
> > > > >--- On Sat, 11/15/08, Tim
> > > > <ignored_mailbox yahoo com au> wrote:
> > > > >
> > > > >  
> > > > >
> > > > >>From: Tim
> <ignored_mailbox yahoo com au>
> > > > >>Subject: Re: Make a DHCP server
> using Fedora - Help
> > > > >>To: olivares14031 yahoo com,
> "Community
> > > > assistance, encouragement, and advice for
> using
> > > > Fedora." <fedora-list redhat com>
> > > > >>Date: Saturday, November 15, 2008,
> 1:57 AM
> > > > >>On Fri, 2008-11-14 at 17:42 -0800,
> Antonio Olivares
> > > > wrote:
> > > > >>    
> > > > >>
> > > > >>>subnet 10.154.19.0 netmask
> 255.255.255.0 {
> > > > >>>}
> > > > >>>
> > > > >>># This is a very basic subnet
> declaration.
> > > > >>>
> > > > >>>subnet 10.154.19.0 netmask
> 255.255.255.224 {
> > > > >>>  range 10.154.19.10
> 10.154.19.20;
> > > > >>>  option routers
> rtr-239-0-1.example.org,
> > > > >>>      
> > > > >>>
> > > > >>rtr-239-0-2.example.org;
> > > > >>    
> > > > >>
> > > > >>>}
> > > > >>>      
> > > > >>>
> > > > >>It seems pointlessly redundant to
> declare a subnet
> > > > twice. 
> > > > >>And stranger
> > > > >>to declare it differently.  I see no
> point for the
> > > > first
> > > > >>one.
> > > > >>
> > > > >>-- 
> > > > >>[tim localhost ~]$ uname -r
> > > > >>2.6.26.6-79.fc9.i686
> > > > >>
> > > > >>Don't send private replies to my
> address, the
> > > > mailbox
> > > > >>is ignored.  I
> > > > >>read messages from the public lists.
> > > > >>    
> > > > >>
> > > > >
> > > > >Which one should I keep Tim, the first
> one or the
> > > > second one?
> > > > >
> > > > >I have tried  before and not succeeded,
> I want to
> > > > succeed this time. 
> > > > >
> > > > >The machine that will become the server
> has gateway
> > > > 10.154.19.1, is it okay to make the server 
> > > > >10.154.19.0 ?
> > > > >
> > > > >Also the machine's netmask is
> 255.255.255.0 and the
> > > > netmask of the server should it be
> 255.255.255.0 or
> > > > 255.255.255.254 or other thing?
> > > > >
> > > > >Thanks,
> > > > >
> > > > >Antonio
> > > > >
> > > > 
> > > > Dear You,
> > > > 
> > > > Please try these :
> > > > 
> > > > <>subnet 10.154.19.0 netmask
> 255.255.255.224
> > > > {
> > > > range 10.154.19.10 10.154.19.20;
> > > > option routers
> > > >
> rtr-239-0-1.example.org,rtr-239-0-2.example.org;
> > > > }
> > > > 
> > > > Good luck !
> > > 
> > > I tried that and it does not work :(
> > > 
> > > [root localhost ~]# cat /etc/dhcpd.conf
> > > # dhcpd.conf                           
> > > #                                      
> > > # Sample configuration file for ISC dhcpd
> > > #                                        
> > > 
> > > # option definitions common to all supported
> networks...
> > > #option domain-name "example.org";     
>                 
> > > #option domain-name-servers ns1.example.org,
> ns2.example.org;
> > > 
> > > default-lease-time 600;
> > > max-lease-time 7200;   
> > > 
> > > # Use this to enble / disable dynamic dns updates
> globally.
> > > ddns-update-style none;                          
>          
> > > 
> > > # If this DHCP server is the official DHCP server
> for the local
> > > # network, the authoritative directive should be
> uncommented.  
> > > authoritative;                                   
>              
> > > 
> > > # Use this to send dhcp log messages to a
> different log file (you also
> > > # have to hack syslog.conf to complete the
> redirection).              
> > > log-facility local7;                             
>                     
> > > 
> > > # No service will be given on this subnet, but
> declaring it helps the 
> > > # DHCP server to understand the network topology.
>                     
> > > 
> > > #subnet 10.154.19.0 netmask 255.255.255.0 {
> > > #}                                         
> > > 
> > > # This is a very basic subnet declaration.
> > > 
> > > subnet 10.154.19.0 netmask 255.255.255.224 {
> > >   range 10.154.19.10 10.154.19.20;          
> > >   option routers rtr-239-0-1.example.org,
> rtr-239-0-2.example.org;
> > > }                                                
>                 
> > > 
> > > [root localhost ~]# dhcpd -f
> > > Internet Systems Consortium DHCP Server 4.0.0
> > > Copyright 2004-2007 Internet Systems Consortium.
> > > All rights reserved.                            
> > > For info, please visit
> http://www.isc.org/sw/dhcp/
> > > Not searching LDAP since ldap-server, ldap-port
> and ldap-base-dn were not specified in the config file      
>                                                    
> > > Wrote 0 leases to leases file.                   
>                               
> > > 
> > > No subnet declaration for eth0 (10.154.19.210).
> > > ** Ignoring requests on eth0.  If this is not
> what
> > >    you want, please write a subnet declaration
> > >    in your dhcpd.conf file for the network
> segment
> > >    to which interface eth0 is attached. **
> > > 
> > ----
> > /etc/dhcpd.conf
> > 
> > default-lease-time 600;
> > max-lease-time 7200;   
> > ddns-update-style none;                               
>     
> > authoritative;                                        
>         
> > log-facility local7;                                  
>                
> > subnet 10.154.19.0 netmask 255.255.255.224 {
> >  range 10.154.19.10 10.154.19.20;          
> >  option domain-name-servers $DNS_SERVER_IP_ADDRESS_1,
> $DNS_SERVER_IP_ADDRESS_2;
> >  option domain-name "$YOUR_DOMAIN_NAME";
> >  option broadcast-address 10.154.19.31;
> >  option subnet-mask 255.255.255.224;
> >  option routers 10.154.19.1 ; # just a guess
> >  ddns-updates off;
> >  }                                         
> > 
> > /etc/sysconfig/dhcpd
> > 
> > DHCPDARGS=eth0 # recommended
> > 
> > # other things to note...default and max lease times
> are really short. Many more options can be added such as
> WINS, NTP servers, etc.
> > 
> > Webmin (http://www.webmin.com) makes a lot of this
> very trivial
> ----
> given your other e-mail that came after I sent this which
> included this
> information...
> 
> eth0      Link encap:Ethernet  HWaddr 00:0E:A6:42:59:AF  
>           inet addr:10.154.19.210  Bcast:10.154.19.255
> Mask:255.255.255.0
> 
> the class C subnet means that my broadcast address and
> subnet masks
> should match these above.
> 
> Craig
> 
> -- 

Thank you Craig for your input, I will change this on Monday and test it out. 

So 
subnet 10.154.19.0 netmask 255.255.255.254 {

should be changed to 
==> subnet 10.154.19.0 netmask 255.255.255.0 {

range 10.154.19.10 10.154.19.20;          
option domain-name-servers $DNS_SERVER_IP_ADDRESS_1, $DNS_SERVER_IP_ADDRESS_2;
option domain-name "$YOUR_DOMAIN_NAME";

option broadcast-address 10.154.19.31; to
option broadcast-address 10.154.19.255;

for $DNS_SERVER_IP_ADDRESS_1, $DNS_SERVER_IP_ADDRESS_2 should it I leave them as is or do I put the ones that are on the host machine? or will it pick them up automagically? 

Do I need to have bind running as well?

Sorry to ask too many questions.  Last time I was trying this, I tried webmin, but I got confused with iptables and other little things.   Will the iptables part that I put in suffice also.

Thank you for your time and advice.  When I get back to work on Monday, I will try these suggestions and post back if I succeed or still have questions.

Regards,

Antonio  


      


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