Changeset 778 for trunk/rDNS.html
- Timestamp:
- 09/29/15 18:09:43 (9 years ago)
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- 1 edited
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trunk/rDNS.html
r684 r778 2 2 <html> 3 3 <head> 4 5 6 7 4 <title>IP Database Reverse DNS Help</title> 5 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 6 <link rel="stylesheet" type="text/css" href="ipdb.css"> 7 <link rel="stylesheet" type="text/css" href="local.css"> 8 8 </head> 9 9 <body> 10 10 11 <p>The IP Database can pass reverse DNS information back and forth to a DNS management backend to simplify 11 <!-- 12 This file is generated, and should not be edited directly. Edit gen-rDNS.pl to edit the header below, and 13 see https://secure.deepnet.cx/svn/dnsadmin/trunk/reverse-patterns.html for the tables. 14 --> 15 16 <p>The IP Database can pass reverse DNS information back and forth to a DNS management backend to simplify 12 17 maintenance of the reverse DNS records associated with the IPs being managed.</p> 13 18 14 <p>Several shortcuts can be used when specifying a pattern for an IPv4 netblock, which will be expanded to 15 actual DNS records by the DNS management system. %blank% may be used to skip template expansion on a 16 subblock or IP.</p> 19 <p>Several shortcuts can be used when specifying a pattern for an IPv4 netblock, which will be expanded to 20 actual DNS records by the DNS management system.</p> 17 21 18 <p>Entries should generally only be present in the "Per-IP reverse entries" section if they are different from 22 <p>Entries should generally only be present in the "Per-IP reverse entries" section if they are different from 19 23 the block pattern.</p> 20 24 21 <p>Template patterns are not supported for IPv6 allocations due to the size of the address space and typical 25 <p>Template patterns are not supported for IPv6 allocations due to the size of the address space and typical 22 26 size of allocations.</p> 23 27 24 <table class="regular" cellspacing="1" cellpadding="1" bgcolor="#000000"> 25 <tr class="header"><td></td><td>Substitution pattern</td><td>Example expansion using 192.168.23.45</td></tr> 28 <p>"(cached)" or "[local]" indicates the rDNS information shown came from IPDB records, 29 and not the DNS management utility. It may be out of date, or DNS 30 management integration may be missing or incomplete for this block.</p> 26 31 27 <tr class="header"><td colspan="3">Whole-IP patterns</td></tr> 28 <tr class="row0"><td>Dashed IP</td><td>%i</td><td>192-168-23-45</td></tr> 29 <tr class="row1"><td>Reverse dashed IP</td><td>%r</td><td>45-23-168-192</td></tr> 30 <tr class="row0"><td>Hex-coded IP</td><td>%h</td><td>c0a8172d</td></tr> 31 <tr class="row1"><td>Decimal IP</td><td>%d</td><td>323241453</td></tr> 32 <!-- rdns pattern table --> 33 <table class="container" cellpadding="2" cellspacing="2" style="max-width:850px;"> 34 <tbody> 35 <tr class="tableheader"> 36 <td colspan="3">Whole-IP patterns</td> 37 </tr> 38 <tr class="tableheader"> 39 <td></td> 40 <td>Substitution pattern</td> 41 <td>Example expansion using 192.168.23.45</td> 42 </tr> 43 <tr class="row0"> 44 <td>Dashed IP</td> 45 <td>%i</td> 46 <td>192-168-23-45</td> 47 </tr> 48 <tr class="row1"> 49 <td>Reverse dashed IP</td> 50 <td>%r</td> 51 <td>45-23-168-192</td> 52 </tr> 53 <tr class="row0"> 54 <td>Hex-coded IP</td> 55 <td>%h</td> 56 <td>c0a8172d</td> 57 </tr> 58 <tr class="row1"> 59 <td>Decimal IP</td> 60 <td>%d</td> 61 <td>323241453</td> 62 </tr> 63 <tr class="row0"> 64 <td colspan="3"> 65 %i and %r also allow explicitly defining the separator; eg %.i or %_r. Dot/period (.), dash (-), 66 and underscore (_) are the only characters supported since DNS names may not contain most 67 other non-alphanumerics. 68 </td> 69 </tr> 70 <tr class="row0"> 71 <td colspan="3"> 72 %blank% may be used to specifically prevent template expansion on a segment of a block if 73 desired; eg, if 192.168.23.0/24 has "unused-%i.example.com" set, adding an A+PTR template 74 for 192.168.23.48/30 of "%blank%" will leave 192.168.23.48 through .51 without PTR records 75 unless specific entries exist for those IPs. 76 </td> 77 </tr> 78 <tr class="tableheader"> 79 <td colspan="3">Per-octet patterns (1, 2, 3, or 4 specify 80 the octet; d, h or 0 specify decimal, hexidecimal, or 81 0-padded decimal)</td> 82 </tr> 83 <tr class="row0"> 84 <td>First octet, decimal</td> 85 <td>%1d</td> 86 <td>192</td> 87 </tr> 88 <tr class="row1"> 89 <td>Third octet, 0-padded</td> 90 <td>%30</td> 91 <td>023</td> 92 </tr> 93 <tr class="row0"> 94 <td>Fourth octet, hexidecimal</td> 95 <td>%4h</td> 96 <td>2d</td> 97 </tr> 98 <tr class="row1"> 99 <td>All octets, different expansions</td> 100 <td>%1h-%2d-%30-%4h</td> 101 <td>c0-168-023-2d</td> 102 </tr> 32 103 33 <tr class="header"><td colspan="3">Per-octet patterns (1, 2, 3, or 4 specify the octet; d, h or 0 34 specify decimal, hexidecimal, or 0-padded decimal)</td></tr> 35 <tr class="row0"><td>First octet, decimal</td><td>%1d</td><td>192</td></tr> 36 <tr class="row1"><td>Third octet, 0-padded</td><td>%30</td><td>023</td></tr> 37 <tr class="row0"><td>Fourth octet, hexidecimal</td><td>%4h</td><td>2d</td></tr> 38 <tr class="row1"><td>All octets, different expansions</td><td>%1h-%2d-%30-%4h</td><td>c0-168-023-2d</td></tr> 104 <tr><td colspan="3"> </td></tr> 39 105 40 </table> 106 <tr class="tableheader"> 107 <td colspan="3">Extensions</td> 108 </tr> 109 <tr class="tableheader"> 110 <td></td> 111 <td>Substitution pattern</td> 112 <td>Example expansion using 192.168.23.40/29</td> 113 </tr> 114 <tr class="row0"> 115 <td>Network/<br />gateway/<br />broadcast</td> 116 <td>%ngb%</td> 117 <td> 118 customer-%i%ngb%.example.com<br /> 119 192.168.23.40 -> customer-net.example.com<br /> 120 192.168.23.41 -> customer-gw.example.com<br /> 121 192.168.23.42 -> customer-192-168-23-42.example.com<br /> 122 192.168.23.43 -> customer-192-168-23-43.example.com<br /> 123 192.168.23.44 -> customer-192-168-23-44.example.com<br /> 124 192.168.23.45 -> customer-192-168-23-45.example.com<br /> 125 192.168.23.46 -> customer-192-168-23-46.example.com<br /> 126 192.168.23.47 -> customer-bcast.example.com 127 </td> 128 </tr> 129 <tr class="row1"> 130 <td colspan="3"> 131 Any IP pattern component is blanked on the network, gateway, and broadcast IPs when this is 132 used.<br /> 133 Each of n, g, or b can be prefixed with a dash, eg %-ng-b% or %n-g-b%, which will 134 blank that entire entry instead of substituting <tt>net</tt>, <tt>gw</tt>, or <tt>bcast</tt>. 135 </td> 136 </tr> 137 <tr class="row0"> 138 <td>n'th usable IP</td> 139 <td>%c</td> 140 <td> 141 customer-%3d-%c.example.com<br /> 142 192.168.23.40 -> customer-23.example.com<br /> 143 192.168.23.41 -> customer-23.example.com<br /> 144 192.168.23.42 -> customer-23-1.example.com<br /> 145 192.168.23.43 -> customer-23-2.example.com<br /> 146 192.168.23.44 -> customer-23-3.example.com<br /> 147 192.168.23.45 -> customer-23-4.example.com<br /> 148 192.168.23.46 -> customer-23-5.example.com<br /> 149 192.168.23.47 -> customer-23.example.com 150 </td> 151 </tr> 152 <tr class="row1"> 153 <td colspan="3"> 154 c can be prefixed with a dash (%-c), which starts the numbering from the conventional gateway IP 155 instead. (.41 above would be 1, .42 2, etc, finishing with 6 at .46). 156 </td> 157 </tr> 158 </tbody> 159 </table> 160 <!-- done rdns pattern table --> 41 161 42 <p> %i and %r also allow explicitly defining the separator; eg %.i 43 or %_r. '.', '-', and '_' are the only characters<br> 44 supported since DNS names may not contain most other 45 non-alphanumerics.</p> 46 47 </body></html> 162 </body> 163 </html>
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