1Smokeping_probes_WebProxyFilter(3) SmokePingSmokeping_probes_WebProxyFilter(3)
2
6 Smokeping::probes::WebProxyFilter - tests webproxy filter performance
7 and function.
8
10 This probe tests if your filtering webproxy is working properly.
11 Drawing from a list of forbidden websites, it tries to establish a
12 connection to each one of them and registers a 'loss' when it suceeeds.
13 If you want to test availability of a website, use the EchoPingHttp
15 probe.
16
18 *** Probes ***
19 +WebProxyFilter
21 forks = 5
23 maxsize = 2000
24 min_interval = 0.1
25 offset = 50%
26 step = 300
27 timeout = 15
28 useragent = SmokePing/2.x (WebProxyFilter Probe)
29 # The following variables can be overridden in each target section
31 deny_re = Access Prohibited
32 more_hosts = www.playboy.com, www.our-competition.com
33 pings = 5
34 timeout = 2
35 # [...]
37 *** Targets ***
39 probe = WebProxyFilter # if this should be the default probe
41 # [...]
43 + mytarget
45 # probe = WebProxyFilter # if the default probe is something else
46 host = my.host
47 deny_re = Access Prohibited
48 more_hosts = www.playboy.com, www.our-competition.com
49 pings = 5
50 timeout = 2
51
53 The probe uses the LWP::UserAgent module to retreive a series of
54 wepages. It expects to get the firewalls 'site-prohibited' page. Any
55 other response (or a real loss) gets logged as a loss and can be used
56 to trigger an alarm.
57 The probe tries to be nice to the firewall and waits at least X seconds
59 between starting filetransfers, where X is the value of the probe
60 specific `min_interval' variable (1 by default).
61 Many variables can be specified either in the probe or in the target
63 definition, the target-specific variable will override the prove-
64 specific variable.
65
67 Supported probe-specific variables:
68 forks
70 Run this many concurrent processes at maximum
71 Example value: 5
73 Default value: 5
75 maxsize
77 How much of the webpage should be retreived.
78 Default value: 2000
80 min_interval
82 The minimum interval between each starting GETs in seconds.
83 Example value: 0.1
85 Default value: 1
87 offset
89 If you run many probes concurrently you may want to prevent them
90 from hitting your network all at the same time. Using the probe-
91 specific offset parameter you can change the point in time when
92 each probe will be run. Offset is specified in % of total interval,
93 or alternatively as 'random', and the offset from the 'General'
94 section is used if nothing is specified here. Note that this does
95 NOT influence the rrds itself, it is just a matter of when data
96 acqusition is initiated. (This variable is only applicable if the
97 variable 'concurrentprobes' is set in the 'General' section.)
98 Example value: 50%
100 step
102 Duration of the base interval that this probe should use, if
103 different from the one specified in the 'Database' section. Note
104 that the step in the RRD files is fixed when they are originally
105 generated, and if you change the step parameter afterwards, you'll
106 have to delete the old RRD files or somehow convert them. (This
107 variable is only applicable if the variable 'concurrentprobes' is
108 set in the 'General' section.)
109 Example value: 300
111 timeout
113 How long a single 'ping' takes at maximum
114 Example value: 15
116 Default value: 5
118 useragent
120 The web browser we claim to be, just in case the FW is interested
121 Default value: SmokePing/2.x (WebProxyFilter Probe)
123 Supported target-specific variables:
125 deny_re
127 Regular expression, matching the 'deny' response from the firewall
128 Example value: Access Prohibited
130 more_hosts
132 A comma separated list of banned websites to test in addition to
133 the one specified in the host variable. The websites will be tested
134 one after the other in one round, this means that while normal
135 probes do run the same test serveral times in a row, this one will
136 alter the webpage with each round. The reason for this is, that
137 eventhough we try to retreive remote webpages, the answer will come
138 from the firewall everytime, so we kill two birds in one go. First
139 we test the firewalls latency and second we make sure its filter
140 works properly.
141 Example value: www.playboy.com, www.our-competition.com
143 pings
145 How many pings should be sent to each target, if different from the
146 global value specified in the Database section. Note that the
147 number of pings in the RRD files is fixed when they are originally
148 generated, and if you change this parameter afterwards, you'll have
149 to delete the old RRD files or somehow convert them.
150 Example value: 5
152 timeout
154 Timeout in seconds for the test complete.
155 Example value: 2
157 Default value: 2
159
161 Tobias Oetiker <tobi@oetiker.ch> sponsored by Virtela
162
164 This probe is somewhat unortodox, since it regards the sucessful
165 retrieval of a banned webpage as a loss.
1662.7.3 2021-07-23Smokeping_probes_WebProxyFilter(3)