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Annotated edit history of DavidsDDNSExample version 5, including all changes. View license author blame.
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4 DavidMoore 1 This is an example of a DDNS configuration running on Fedora Core 1 Linux.
2
3 http://fedoranews.org/contributors/derek_pienaar/ddns
4 http://ops.ietf.org/dns/dynupd/secure-ddns-howto.html
5 [DHCPNotes] are well worth reading.
6
7 DynamicDNS (DDNS) makes adding a new computer to my network as simple as plugging it into my switch.
8 The new client tells the server what its host name is, and the server allocates it an address (DHCP) and lets the
9 rest of the network know (DNS). No configuration at the server is required!
10 (It's the next best thing to ZeroConf.)
11 I like having this running as I was told it "couldn't be done" :-D.
12
13 The "secret key" is generated with dns-keygen.
14
15 !! /etc/named.conf
16
17 // Dave's own hacked named.conf
18 // with dynamic DNS :-D
19
20 options {
21 directory "/var/named";
22 allow-query {
23 192.168.10/24;
24 192.168.12/24;
25 localhost;
26 };
27 // forward only;
28 // forward first;
29 forwarders {
30 210.55.24.14;
31 210.55.24.8;
32 };
5 GeorgeDickey 33 // just listen internally
34 listen-on {
35 192.168.10/24;
36 192.168.12/24;
37 __127.0.0.1;__
38 };
4 DavidMoore 39
40 };
41
42
43 controls {
44 inet 127.0.0.1 allow { localhost; } keys { rndckey; };
45 };
46
47 // Master DNS servers
48 zone "." IN {
49 type hint;
50 file "named.ca";
51 };
52
53 // Localhost addresses
54 zone "localhost" IN {
55 type master;
56 file "localhost.zone";
57 allow-update { none; };
58 };
59 zone "0.0.127.in-addr.arpa" IN {
60 type master;
61 file "named.local";
62 allow-update { none; };
63 };
64
65 // Magic key which lets DHCP update DNS
66 key "DHCP-UPDATER" {
67 algorithm hmac-md5;
68 secret "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff";
69 };
70
71 // Home network
72 zone "invermay" {
73 type master;
74 notify no;
75 file "invermay.zone";
76 allow-update { key DHCP-UPDATER; };
77 };
78
79 // Reverse name resolution for home network
80 zone "12.168.192.in-addr.arpa" {
81 type master;
82 notify no;
83 file "named.invermay";
84 allow-update { key DHCP-UPDATER; };
85 };
86
87 // Reverse name resolution for wireless link
88 zone "10.168.192.in-addr.arpa" {
89 type master;
90 notify no;
91 file "named.invermay.decknet";
92 allow-update { key DHCP-UPDATER; };
93 };
94
95 include "/etc/rndc.key";
96
97
98 !! /etc/dhcpd.conf
99
100 # Dave's own hacked dhcpd.conf
101 # with dynamic DNS :-D
102
103 # Don't forget command line options are in /etc/sysconfig/dhcpd
104
105 ddns-domainname "invermay";
106 ddns-update-style interim;
107 #ignore client-updates;
108 #ddns-updates off;
109
110 # Magic key which lets DHCP update DNS
111 key "DHCP-UPDATER" {
112 algorithm hmac-md5;
113 secret "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff";
114 };
115
116 # DNS zones to update
117 zone invermay. {
118 primary 127.0.0.1;
119 key DHCP-UPDATER;
120 }
121 zone 12.168.192.in-addr.arpa. {
122 primary 192.168.12.254;
123 key DHCP-UPDATER;
124 }
125 zone 10.168.192.in-addr.arpa. {
126 primary 192.168.10.254;
127 key DHCP-UPDATER;
128 }
129
130 # Home network on eth2
131 subnet 192.168.12.0 netmask 255.255.255.0 {
132 # Default gateway
133 option routers 192.168.12.254;
134 option subnet-mask 255.255.255.0;
135
136 option domain-name "invermay";
137 option domain-name-servers 192.168.12.254;
138
139 range 192.168.12.128 192.168.12.254;
140 default-lease-time 86400; # 1 day
141 max-lease-time 259200; # 3 days
142
143 authoritative;
144 ddns-updates on;
145 }
146
147 # Wireless link on eth0
148 subnet 192.168.10.0 netmask 255.255.255.0 {
149 # Default gateway
150 option routers 192.168.10.254;
151 option subnet-mask 255.255.255.0;
152
153 option domain-name "invermay";
154 option domain-name-servers 192.168.10.254;
155
156 range 192.168.10.128 192.168.10.254;
157 default-lease-time 86400; # 1 day
158 max-lease-time 259200; # 3 days
159
160 authoritative;
161 ddns-updates on;
162 }
163
164
165 !! /var/named/invermay.zone
166
167 $ORIGIN .
168 $TTL 604800 ; 1 week
169 invermay IN SOA rata.invermay. root.rata.invermay. (
170 107 ; serial
171 28800 ; refresh (8 hours)
172 14400 ; retry (4 hours)
173 3024000 ; expire (5 weeks)
174 86400 ; minimum (1 day)
175 )
176 NS rata.invermay.
177 $ORIGIN invermay.
178 $TTL 129600 ; 1 day 12 hours
179 feijoa A 192.168.10.253
180 TXT "3128380ff01e7006b0688a5d32bba2d551"
181 $TTL 604800 ; 1 week
182 localhost A 127.0.0.1
183 ollienet A 192.168.12.254
184 rata A 192.168.12.254
185 tuxnet A 192.168.12.254
186
187 !! /var/named/localhost.zone
188
189 $TTL 86400
190 $ORIGIN localhost.
191 @ 1D IN SOA @ root (
192 42 ; serial (d. adams)
193 3H ; refresh
194 15M ; retry
195 1W ; expiry
196 1D ) ; minimum
197
198 1D IN NS @
199 1D IN A 127.0.0.1
200
201 !! /var/named/named.invermay
202
203 $ORIGIN .
204 $TTL 604800 ; 1 week
205 12.168.192.in-addr.arpa IN SOA rata.invermay. root.rata.invermay. (
206 104 ; serial
207 28800 ; refresh (8 hours)
208 14400 ; retry (4 hours)
209 3024000 ; expire (5 weeks)
210 86400 ; minimum (1 day)
211 )
212 NS rata.invermay.
213 $ORIGIN 12.168.192.in-addr.arpa.
214 254 PTR rata.invermay.
215
216 !! /var/named/named/named.invermay.decknet
217
218 $ORIGIN .
219 $TTL 86400 ; 1 day
220 10.168.192.in-addr.arpa IN SOA rata.invermay. root.rata.invermay. (
221 101 ; serial
222 28800 ; refresh (8 hours)
223 14400 ; retry (4 hours)
224 3024000 ; expire (5 weeks)
225 86400 ; minimum (1 day)
226 )
227 NS rata.invermay.
228 $ORIGIN 10.168.192.in-addr.arpa.
229 $TTL 129600 ; 1 day 12 hours
230 253 PTR feijoa.invermay.
231 $TTL 86400 ; 1 day
232 254 PTR rata.invermay.
233
234 !! /var/named/named.local
235
236 $TTL 86400
237 @ IN SOA localhost. root.localhost. (
238 1997022700 ; Serial
239 28800 ; Refresh
240 14400 ; Retry
241 3600000 ; Expire
242 86400 ) ; Minimum
243 IN NS localhost.
244
245 1 IN PTR localhost.
246
247 -------
248
249 And I'd changed a few things so it took me all day to figure out.
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