Cavemanon/Nginx-Lua-Anti-DDoS
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Update anti_ddos_challenge.lua

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Add new security feature to make the cookies we set encrypted, unpredictable, dynamic and unique to each user/client to increase our security from content scrappers bots leechers etc. Where as before they could monitor static cookie names this prevents that.
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C0nw0nk
2019-08-26 19:05:38 +01:00
committed by GitHub
parent 655b82f49c
commit 2e2a5e58a5
1 changed files with 15 additions and 0 deletions
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15
lua/anti_ddos_challenge.lua
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@ -161,6 +161,13 @@ local cookie_name_start_date = challenge.."_start_date" --our cookie start date
local cookie_name_end_date = challenge.."_end_date" --our cookie end date name of our firewall
local cookie_name_encrypted_start_and_end_date = challenge.."_combination" --our cookie challenge unique id name
--[[
Anti-DDoS Cookies to be Encrypted for better security
1 = Cookie names will be plain text above
2 = Encrypted cookie names unique to each individual client/user
]]
local encrypt_anti_ddos_cookies = 2 --Default 2
--[[
TODO:
Encrypt/Obfuscate Javascript output to prevent content scrappers and bots decrypting it to try and bypass the browser auth checks. Wouldn't want to make life to easy for them now would I.
@ -235,6 +242,14 @@ if x_auth_header == 2 then --if x-auth-header is dynamic
x_auth_header_name = calculate_signature(remote_addr .. os.date("%Y%m%d",os.time()-24*60*60)):gsub("_","") --make the header unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots gsub because header bug with underscores so underscore needs to be removed
end
if encrypt_anti_ddos_cookies == 2 then --if Anti-DDoS Cookies are to be encrypted
--make the cookies unique to the client and for todays date encrypted so every 24 hours this will change and can't be guessed by bots
challenge = calculate_signature(remote_addr .. challenge .. os.date("%Y%m%d",os.time()-24*60*60))
cookie_name_start_date = calculate_signature(remote_addr .. cookie_name_start_date .. os.date("%Y%m%d",os.time()-24*60*60))
cookie_name_end_date = calculate_signature(remote_addr .. cookie_name_end_date .. os.date("%Y%m%d",os.time()-24*60*60))
cookie_name_encrypted_start_and_end_date = calculate_signature(remote_addr .. cookie_name_encrypted_start_and_end_date .. os.date("%Y%m%d",os.time()-24*60*60))
end
--[[
Grant access function to either grant or deny user access to our website
]]