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netfilter-config
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netfilter-confi...
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iptables.up.rules.statefull

iptables.up.rules.statefull 8.7 KB
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  1. # Well known ports      0:1023
    2. 

  2. # Registered ports      1024:49151
    3. 

  3. # Goldielocks zone      32768:65535
    4. 

  4. # Dynamic/Private       49152:65535
    5. 

  5. #
    6. 

  6. 

  7. *filter
    8. 

  8. 

  9. :INPUT ACCEPT [0:0]
    10. 

  10. :FORWARD ACCEPT [0:0]
    11. 

  11. :OUTPUT ACCEPT [0:0]
    12. 

  12. :clutter - [0:0]
    13. 

  13. 

  14. # Local loopback
    15. 

  15. -A INPUT ! -i lo -d 127.0.0.0/8 -m limit --limit 5/min -j LOG --log-prefix "iptables dropped 127.0.0.0/8, from non localhost: " --log-level 7
    16. 

  16. -A INPUT ! -i lo -d 127.0.0.0/8 -j DROP
    17. 

  17. -A INPUT -i lo -j ACCEPT
    18. 

  18. -A OUTPUT -o lo -j ACCEPT
    19. 

  19. 

  20. # Local docker
    21. 

  21. #-A OUTPUT ! -o eth0 -s 172.18.0.0/13 -d 172.18.0.0/13 -j ACCEPT -m comment --comment "Internal docker"
    22. 

  22. #-A FORWARD ! -o eth0 ! -i eth0 -s 172.18.0.1/13 -d 172.18.0.1/13 -j ACCEPT -m comment --comment "Internal docker"
    23. 

  23. 

  24. # ICMP: Ping
    25. 

  25. -A OUTPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
    26. 

  26. 

  27. # FTP
    28. 

  28. #-A OUTPUT -p tcp -m tcp --dport 21 -j ACCEPT
    29. 

  29. #-A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 49152:65535 -j ACCEPT
    30. 

  30. 

  31. # SSH
    32. 

  32. -A INPUT -p tcp -m tcp --dport 22 -m state --state NEW -m recent --set --name SSH --mask 255.255.255.255 --rsource
    33. 

  33. -A INPUT -p tcp -m tcp --dport 22 -m limit --limit 5/min -m recent --rcheck --seconds 40 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j LOG --log-prefix "iptalbes dropped SSH flood: "
    34. 

  34. -A INPUT -p tcp -m tcp --dport 22 -m recent --update --seconds 40 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j DROP
    35. 

  35. -A INPUT -s 86.83.121.29,185.66.250.42 -p tcp -m tcp --sport 1024:65535 --dport 22 -j ACCEPT
    36. 

  36. #-A OUTPUT -p tcp -m tcp --dport 22 -j ACCEPT
    37. 

  37. #-A FORWARD -p tcp -m tcp --dport 22 -m state --state NEW -m recent --set --name SSH --mask 255.255.255.255 --rsource
    38. 

  38. #-A FORWARD -p tcp -m tcp --dport 22 -m limit --limit 5/min -m recent --rcheck --seconds 40 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j LOG --log-prefix "iptalbes dropped SSH flood: "
    39. 

  39. #-A FORWARD -p tcp -m tcp --dport 22 -m recent --update --seconds 40 --hitcount 4 --rttl --name SSH --mask 255.255.255.255 --rsource -j DROP
    40. 

  40. #-A FORWARD ! -o eth0 -d 172.18.0.0/13 -p tcp -m tcp --dport 22 -j ACCEPT
    41. 

  41. 

  42. # SMTP
    43. 

  43. #-A OUTPUT -p tcp -m tcp --dport 25 -j ACCEPT
    44. 

  44. #-A INPUT -p tcp -m tcp --dport 25 -j ACCEPT
    45. 

  45. 

  46. # WHOIS
    47. 

  47. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 43 -j ACCEPT
    48. 

  48. 

  49. # DNS
    50. 

  50. -A OUTPUT -p udp -m udp --sport 1024:65535 --dport 53 -j ACCEPT
    51. 

  51. 

  52. # DHCP
    53. 

  53. -A INPUT -i eth0 -d 255.255.255.255 -p udp -m udp --sport 67 --dport 68 -m limit --limit 5/min -j LOG --log-prefix "iptables allowed DHCP: " --log-level 7
    54. 

  54. -A INPUT -i eth0 -d 255.255.255.255 -p udp -m udp --sport 67 --dport 68 -j ACCEPT
    55. 

  55. -A OUTPUT -o eth0 -p udp -m udp --sport 68 --dport 67 -m limit --limit 5/min -j LOG --log-prefix "iptables allowed DHCP: " --log-level 7
    56. 

  56. -A OUTPUT -o eth0 -p udp -m udp --sport 68 --dport 67 -j ACCEPT
    57. 

  57. 

  58. # HTTP & HTTPS
    59. 

  59. #-A INPUT -p tcp -m tcp --dport 80 -m state --state NEW -m recent --set --name HTTP --rsource
    60. 

  60. #-A INPUT -p tcp -m tcp --dport 80 -m recent --rcheck --seconds 10 --hitcount 20 --rttl --name HTTP --rsource -j LOG --log-prefix "iptables dropped HTTP flood: " --log-level 4
    61. 

  61. #-A INPUT -p tcp -m tcp --dport 80 -m recent --update --seconds 10 --hitcount 20 --rttl --name HTTP --rsource -j DROP
    62. 

  62. -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT -m comment --comment "Tor Dir port"
    63. 

  63. -A OUTPUT -p tcp -m tcp --dport 80 -j ACCEPT
    64. 

  64. 

  65. #-A INPUT -p tcp -m tcp --dport 443 -m state --state NEW -m recent --set --name HTTPS --rsource
    66. 

  66. #-A INPUT -p tcp -m tcp --dport 443 -m recent --rcheck --seconds 10 --hitcount 20 --rttl --name HTTPS --rsource -j LOG --log-prefix "iptables dropped HTTPS flood: " --log-level 4
    67. 

  67. #-A INPUT -p tcp -m tcp --dport 443 -m recent --update --seconds 10 --hitcount 20 --rttl --name HTTPS --rsource -j DROP
    68. 

  68. -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT -m comment --comment "Tor relay ORport"
    69. 

  69. -A OUTPUT -p tcp -m tcp --dport 443 -j ACCEPT
    70. 

  70. 

  71. # NTP
    72. 

  72. -A OUTPUT -p udp -m udp --dport 123 -j ACCEPT
    73. 

  73. 

  74. # IMAP
    75. 

  75. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 143 -j ACCEPT 
    76. 

  76. 

  77. # IMAPS
    78. 

  78. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 993 -j ACCEPT
    79. 

  79. 

  80. # PIP
    81. 

  81. #-A OUTPUT -d 185.31.17.223 -p tcp -m tcp --sport 32768:65535 --dport 443 -j ACCEPT -m comment --comment "pip"
    82. 

  82. 

  83. # SMTPS
    84. 

  84. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 465 -j ACCEPT -m comment --comment "SMTP SSL/TLS"
    85. 

  85. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 587 -j ACCEPT -m comment --comment "STARTTLS"
    86. 

  86. 

  87. # XMPP
    88. 

  88. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 5223 -j ACCEPT -m comment --comment "xmpps"
    89. 

  89. -A OUTPUT -p udp -m udp --sport 32768:65535 --dport 1900 -j ACCEPT -m comment --comment "xmpp?"
    90. 

  90. 

  91. # Multicast DNS
    92. 

  92. -A OUTPUT -p udp -m udp --sport 5353 --dport 5353 -j clutter
    93. 

  93. -A OUTPUT -d 244.0.0.1 -j clutter -m comment --comment "Multicast DNS"
    94. 

  94. -A INPUT -d 224.0.0.1 -j clutter -m comment --comment "Multicast DNS"
    95. 

  95. 

  96. # IRC
    97. 

  97. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 6667 -j ACCEPT
    98. 

  98. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 6697 -j ACCEPT -m comment --comment "ircs"
    99. 

  99. 

  100. # Bitcoin
    101. 

  101. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 8333 -j ACCEPT -m comment --comment "Bitcoin"
    102. 

  102. 

  103. # Tor
    104. 

  104. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 8000 -j ACCEPT -m comment --comment "Tor"
    105. 

  105. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 9001:9002 -j ACCEPT -m comment --comment "Tor"
    106. 

  106. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 9030:9031 -j ACCEPT -m comment --comment "Tor"
    107. 

  107. 

  108. # OpenPGP HTTP Key servers
    109. 

  109. -A OUTPUT -p tcp -m tcp --sport 32768:65535 --dport 11371 -j ACCEPT -m comment --comment "OpenPGP hkp HTTP key servers"
    110. 

  110. 

  111. # Torrents
    112. 

  112. #-A OUTPUT -p udp -m udp --sport 51413 -j ACCEPT -m comment --comment "Torrents"
    113. 

  113. #-A INPUT -p udp -m udp  --dport 51413 -j ACCEPT -m comment --comment "Torrents"
    114. 

  114. 

  115. # Traceroute
    116. 

  116. -A OUTPUT -p udp -m udp --sport 32768:65535 --dport 6881:33534 -j ACCEPT -m comment --comment "Traceroute"
    117. 

  117. 

  118. # CloudFlare. Why see http://www.crimeflare.com/cfblock.html
    119. 

  119. #-A INPUT -s 103.21.244.0/22,103.22.200.0/22,103.31.4.0/22,104.16.0.0/12,108.162.192.0/18,131.0.72.0/22,141.101.64.0/18,162.158.0.0/15,172.64.0.0/13,173.245.48.0/20,188.114.96.0/20,190.93.240.0/20,197.234.240.0/22,198.41.128.0/17,199.27.128.0/21 -m limit --limit 5/min -j LOG --log-prefix "iptables dropped cloudflare: " --log-level 7
    120. 

  120. #-A INPUT -s 103.21.244.0/22,103.22.200.0/22,103.31.4.0/22,104.16.0.0/12,108.162.192.0/18,131.0.72.0/22,141.101.64.0/18,162.158.0.0/15,172.64.0.0/13,173.245.48.0/20,188.114.96.0/20,190.93.240.0/20,197.234.240.0/22,198.41.128.0/17,199.27.128.0/21 -j DROP -m comment --comment "CloudFlare http://www.crimeflare.com/cfblock.html"
    121. 

  121. #-A OUTPUT -d 103.21.244.0/22,103.22.200.0/22,103.31.4.0/22,104.16.0.0/12,108.162.192.0/18,131.0.72.0/22,141.101.64.0/18,162.158.0.0/15,172.64.0.0/13,173.245.48.0/20,188.114.96.0/20,190.93.240.0/20,197.234.240.0/22,198.41.128.0/17,199.27.128.0/21 -m limit --limit 5/min -j LOG --log-prefix "iptables dropped cloudflare: " --log-level 7
    122. 

  122. #-A OUTPUT -d 103.21.244.0/22,103.22.200.0/22,103.31.4.0/22,104.16.0.0/12,108.162.192.0/18,131.0.72.0/22,141.101.64.0/18,162.158.0.0/15,172.64.0.0/13,173.245.48.0/20,188.114.96.0/20,190.93.240.0/20,197.234.240.0/22,198.41.128.0/17,199.27.128.0/21 -j REJECT -m comment --comment "CloudFlare http://www.crimeflare.com/cfblock.html"
    123. 

  123. 

  124. # Attacks, crawls, scans, etc
    125. 

  125. -A INPUT -p icmp -j clutter
    126. 

  126. -A INPUT -s 0.0.0.0 -d 255.255.255.255 -j clutter -m comment --comment "Broadcast messages"
    127. 

  127. -A INPUT -p udp -m udp --dport 19 -j clutter -m comment --comment "Character generator, looping to echo = DDoS"
    128. 

  128. -A INPUT -p tcp -m tcp --dport 23 -j clutter
    129. 

  129. -A INPUT -p udp -m udp --dport 53 -j clutter
    130. 

  130. -A INPUT -p udp -m udp --dport 111 -j clutter -m comment --comment "Probe/fingerprint Nix OS"
    131. 

  131. -A INPUT -p tcp -m tcp --dport 445 -j clutter -m comment --comment "MS-DS active directory"
    132. 

  132. -A INPUT -p tcp -m tcp --dport 2323 -j clutter -m comment --comment "3d-nfsd"
    133. 

  133. -A INPUT -p udp -m udp --dport 5060 -j clutter
    134. 

  134. -A INPUT -p tcp -m tcp --dport 3389 -j clutter -m comment --comment "MS terminal server RDP"
    135. 

  135. 

  136. #-A INPUT -d 255.255.255.255 -p tcp -m tcp --sport 67 --dport 68 -j clutter -m comment --comment "DHCP"
    137. 

  137. #-A INPUT -m iprange --dst-range 185.66.250.254-185.66.250.255 -j clutter
    138. 

  138. #-A INPUT -m mac --mac-source d4:ca:6d:74:87:0d -j clutter
    139. 

  139. #-A INPUT -p udp -m udp --dport 3076 -j clutter -m comment --comment "orbix-config"
    140. 

  140. 

  141. # Active connections
    142. 

  142. -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
    143. 

  143. -A OUTPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
    144. 

  144. 

  145. # Log & drop
    146. 

  146. -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables dropped: " --log-level 7
    147. 

  147. -A INPUT -j DROP
    148. 

  148. -A FORWARD -m limit --limit 5/min -j LOG --log-prefix "iptables dropped: " --log-level 7
    149. 

  149. -A FORWARD -j DROP
    150. 

  150. -A OUTPUT -m limit --limit 5/min -j LOG --log-prefix "iptables rejected: " --log-level 7
    151. 

  151. -A OUTPUT -j REJECT --reject-with icmp-port-unreachable
    152. 

  152. -A clutter -m limit --limit 5/min -j LOG --log-prefix "iptables clutter dropped: " --log-level 7
    153. 

  153. -A clutter -j DROP
    154. 

  154. 

  155. COMMIT
    156.