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author | Christian Grothoff <christian@grothoff.org> | 2019-04-20 21:45:25 +0200 |
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committer | Christian Grothoff <christian@grothoff.org> | 2019-04-20 21:45:25 +0200 |
commit | 32485c3b58983ada1943b3fa27eac3b0cff2a9da (patch) | |
tree | 1e439c5054194faef2f52a86f16a7c13f5f5aa20 /doc/man/gnunet-publish.1 | |
parent | 5fab02b10baef639121723aacf3b1351e5db8003 (diff) | |
download | gnunet-32485c3b58983ada1943b3fa27eac3b0cff2a9da.tar.gz gnunet-32485c3b58983ada1943b3fa27eac3b0cff2a9da.zip |
try to address #5660:
Diffstat (limited to 'doc/man/gnunet-publish.1')
-rw-r--r-- | doc/man/gnunet-publish.1 | 39 |
1 files changed, 18 insertions, 21 deletions
diff --git a/doc/man/gnunet-publish.1 b/doc/man/gnunet-publish.1 index 0cfad4c78..b003f27e0 100644 --- a/doc/man/gnunet-publish.1 +++ b/doc/man/gnunet-publish.1 | |||
@@ -125,7 +125,25 @@ However, indexing only works if the indexed file can be read (using the same abs | |||
125 | If this is not the case, indexing will fail (and gnunet-publish will automatically revert to publishing instead). | 125 | If this is not the case, indexing will fail (and gnunet-publish will automatically revert to publishing instead). |
126 | Regardless of which method is used to publish the file, the file will be slowly (depending on how often it is requested and on how much bandwidth is available) dispersed into the network. | 126 | Regardless of which method is used to publish the file, the file will be slowly (depending on how often it is requested and on how much bandwidth is available) dispersed into the network. |
127 | If you publish or index a file and then leave the network, it will almost always NOT be available anymore. | 127 | If you publish or index a file and then leave the network, it will almost always NOT be available anymore. |
128 | .Sh OPTIONS | ||
128 | .Bl -tag -width Ds | 129 | .Bl -tag -width Ds |
130 | .It Fl a Ar LEVEL | Fl \-anonymity= Ns Ar LEVEL | ||
131 | This option can be used to specify additional anonymity constraints. The default is 1. | ||
132 | If set to 0, GNUnet will publish the file non-anonymously and in fact sign the advertisement for the file using your peer's private key. | ||
133 | This will allow other users to download the file as fast as possible, including using non-anonymous methods (discovery via DHT and CADET transfer). | ||
134 | If you set it to 1 (default), you use the standard anonymous routing algorithm (which does not explicitly leak your identity). | ||
135 | However, a powerful adversary may still be able to perform traffic analysis (statistics) to over time discovery your identity. | ||
136 | You can gain better privacy by specifying a higher level of anonymity (using values above 1). | ||
137 | This tells FS that it must hide your own requests in equivalent\-looking cover traffic. | ||
138 | This should confound an adversaries traffic analysis, increasing the time and effort it would | ||
139 | take to discover your identity. However, it also can significantly reduce performance, as | ||
140 | your requests will be delayed until sufficient cover traffic is available. The specific | ||
141 | numeric value (for anonymity levels above 1) is simple: | ||
142 | Given an anonymity level L (above 1), each request FS makes on your behalf must be hidden in L\-1 equivalent | ||
143 | requests of cover traffic (traffic your peer routes for others) in the same time\-period. | ||
144 | The time\-period is twice the average delay by which GNUnet artificially delays traffic. | ||
145 | Note that regardless of the anonymity level you choose, peers that cache content in the | ||
146 | network always use anonymity level 1. | ||
129 | .It Fl c Ar FILENAME | Fl \-config= Ns Ar FILENAME | 147 | .It Fl c Ar FILENAME | Fl \-config= Ns Ar FILENAME |
130 | Use alternate config file FILENAME. | 148 | Use alternate config file FILENAME. |
131 | If this option is not specified, the default is | 149 | If this option is not specified, the default is |
@@ -192,27 +210,6 @@ Print the version number. | |||
192 | Be verbose. | 210 | Be verbose. |
193 | Using this option causes gnunet\-publish to print progress information and at the end the file identification that can be used to download the file from GNUnet. | 211 | Using this option causes gnunet\-publish to print progress information and at the end the file identification that can be used to download the file from GNUnet. |
194 | .El | 212 | .El |
195 | .Ss SETTING ANONYMITY LEVEL | ||
196 | .Bl -tag -width Ds | ||
197 | .It Fl a Ar LEVEL | Fl \-anonymity= Ns Ar LEVEL | ||
198 | .El | ||
199 | .sp | ||
200 | The \fB\-a\fR option can be used to specify additional anonymity constraints. | ||
201 | If set to 0, GNUnet will publish the file non-anonymously and in fact sign the advertisement for the file using your peer's private key. | ||
202 | This will allow other users to download the file as fast as possible, including using non-anonymous methods (DHT, direct transfer). | ||
203 | If you set it to 1 (default), you use the standard anonymous routing algorithm (which does not explicitly leak your identity). | ||
204 | However, a powerful adversary may still be able to perform traffic analysis (statistics) to over time infer data about your identity. | ||
205 | You can gain better privacy by specifying a higher level of anonymity, which increases the amount of cover traffic your own traffic will get, at the expense of performance. | ||
206 | Note that regardless of the anonymity level you choose, peers that cache content in the network always use anonymity level 1. | ||
207 | .Pp | ||
208 | The definition of the ANONYMITY LEVEL is the following. | ||
209 | 0 means no anonymity is required. | ||
210 | Otherwise a value of 'v' means that 1 out of v bytes of "anonymous" traffic can be from the local user, leaving 'v-1' bytes of cover traffic per byte on the wire. | ||
211 | Thus, if GNUnet routes n bytes of messages from foreign peers (using anonymous routing), it may originate n/(v-1) bytes of data in the same time\-period. | ||
212 | The time\-period is twice the average delay that GNUnet defers forwarded queries. | ||
213 | .Pp | ||
214 | The default is 1 and this should be fine for most users. | ||
215 | Also notice that if you choose very large values, you may end up having no throughput at all, especially if many of your fellow GNUnet\-peers all do the same. | ||
216 | .Sh EXAMPLES | 213 | .Sh EXAMPLES |
217 | .Ss BASIC EXAMPLES | 214 | .Ss BASIC EXAMPLES |
218 | Index a file COPYING: | 215 | Index a file COPYING: |