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mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
author Matthew Wild <mwild1@gmail.com>
date Thu, 23 Feb 2017 14:14:38 +0000
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children 56db2ab3b853
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cc01a5bfcf3b mod_firewall: spam-blocking.pfw, initial anti-spam ruleset
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1 #### Anti-spam ruleset
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2
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3 #### General rules for all incoming stanzas ####
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4 ::deliver
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5
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6 # Pass stanzas that a user sends to their own account
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7 TO SELF?
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8 PASS.
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9
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10 # Pass stanzas that are addressed to a valid full JID
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11 TO FULL JID?
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12 PASS.
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13
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14 # Pass stanzas from contacts
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15 SUBSCRIBED?
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16 PASS.
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17
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18 # Run extra rules that apply to messages only
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19 KIND: message
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20 JUMP_CHAIN=user/check_spam_message
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21
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22 # Run extra rules that apply to presence stanzas only
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23 KIND: presence
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24 JUMP CHAIN=user/check_spam_presence
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25
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26 #### Rules for messages ####
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27 ::user/check_spam_message
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28
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29 # Non-chat message types often generate pop-ups in clients,
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30 # so we won't accept them from strangers
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31 NOT TYPE: chat
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32 JUMP CHAIN=user/reject_spam
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33
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34 # This chain can be used by other scripts
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35 # and modules that analyze message content
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36 JUMP CHAIN=user/check_spam_message_content
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37
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38 #### Rules for presence stanzas ####
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39 ::user/check_spam_presence
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40
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41 # We don't want to receive presence from random strangers,
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42 # but still allow subscription requests
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43 NOT TYPE: subscribe
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44 DROP.
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45
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46 # This chain can be used by other scripts
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47 # and modules to filter subscription requests
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48 JUMP CHAIN=user/check_subscription_request
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49
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50 #### Stanzas reaching this chain will be rejected ####
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51 ::user/reject_spam
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52
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53 LOG=Rejecting suspected spam: $(stanza:top_tag())
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54 BOUNCE=policy-violation