projects / unix-history / blame
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|---|---|---|
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1 | .\" Copyright (c) 1989 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms are permitted | |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 15 | .\" | |
| 1b3a818d | 16 | .\" @(#)nfsd.8 5.4 (Berkeley) %G% |
| 7dd5dab1 KM |
17 | .\" |
| 18 | .TH NFSD 8 "" | |
| 19 | .UC 7 | |
| 20 | .SH NAME | |
| 21 | nfsd \- remote NFS server | |
| 22 | .SH SYNOPSIS | |
| 23 | .B /sbin/nfsd | |
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24 | [ |
| 25 | .B numdaemons | |
| 26 | [ | |
| 27 | .B filtermask | |
| 28 | .B filtervalue | |
| 29 | ] ] | |
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30 | .SH DESCRIPTION |
| 31 | .I Nfsd | |
| 1b3a818d | 32 | runs on a server machine to service |
| 7dd5dab1 | 33 | .SM NFS |
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34 | requests from client machines. |
| 35 | At least one | |
| 36 | .I nfsd | |
| 37 | must be running for a machine to operate as a server. | |
| 38 | The option | |
| 39 | .I numdaemons | |
| 40 | defines how many | |
| 41 | .I nfsd | |
| 42 | daemons to start; | |
| 43 | if unspecified, only a single daemon will be started. | |
| 44 | A server should typically run enough daemons to handle | |
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45 | the maximum level of concurrency from its clients, |
| 46 | typically four to six. | |
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47 | .PP |
| 48 | The options | |
| 49 | .I filtermask | |
| 50 | and | |
| 51 | .I filtervalue | |
| 52 | may be specified to restrict the clients serviced by filtering incoming | |
| 53 | source addresses. | |
| 54 | They are expressed in Internet standard "." notation. | |
| 55 | The algorithm is simply: | |
| 56 | .sp | |
| 57 | .RS | |
| 58 | if ((filtermask & source_addr) == filtervalue) | |
| 59 | .RS | |
| 60 | .I accept request | |
| 61 | .RE | |
| 62 | .RE | |
| 63 | .sp | |
| 64 | The default values for filtermask and filtervalue are 0, which accepts | |
| 65 | requests from all client source_addr's. | |
| 66 | Alternately, the most secure values you could use for | |
| 67 | .I filtermask | |
| 68 | and | |
| 69 | .I filtervalue | |
| 70 | would be: | |
| 71 | .sp | |
| 72 | .RS | |
| 73 | filtervalue = (inet_addr1 & inet_addr2 & ... & inet_addrN) | |
| 74 | .br | |
| 75 | filtermask = ~(inet_addr1 | inet_addr2 | ... | inet_addrN) | filtervalue | |
| 76 | .RE | |
| 77 | .sp | |
| 78 | although your subnet or net number and mask will be just as good | |
| 79 | in most cases. | |
| 80 | .PP | |
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81 | .I Nfsd |
| 82 | listens for service requests at the port indicated in the | |
| 83 | .SM NFS | |
| 84 | server specification; see | |
| 1b3a818d | 85 | ``Network File System Protocol Specification, RFC1094'' |
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86 | .SH SEE ALSO |
| 87 | .IR nfsstat (1), | |
| 8d25ae69 | 88 | .IR nfssvc (2), |
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89 | .IR mountd (8), |
| 90 | .IR portmap (8) |