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dns: fixed issue that could cause a DOS attach (via DNS amplification)

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ITD's router was setting teh IP of all external traffic as 193.1.99.65, which was part of the 193.1.99.64/26 subnet.
The fix is to explisitly list all our IP's
This commit is contained in:
silver 2023-05-05 14:40:27 +01:00
parent d750b046d1
commit 5579de7e7c
1 changed files with 76 additions and 0 deletions
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76
applications/dns.nix
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@ -106,7 +106,83 @@ in {
# this server itself # this server itself
"127.0.0.0/24" "127.0.0.0/24"
# all of skynet can use this as a resolver # all of skynet can use this as a resolver
/*
Origianl idea, however all external traffic had the ip of the router
"193.1.99.64/26" "193.1.99.64/26"
So to fix this we need to allow smaller ranges? - Didnt work
Fallback is explisitly listing each ip we have
*/
"193.1.99.71/32"
"193.1.99.72/32"
"193.1.99.73/32"
"193.1.99.71/32"
"193.1.99.74/32"
"193.1.99.75/32"
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]; ];
zones = { zones = {