networking

3595 readers

9 users here now

Community for discussing enterprise networks and the ensuing chaos that comes after inheriting or building one.

founded 3 years ago

MODERATORS

manifex@sh.itjust.works

wireguard disallow a lot of geo subnets (piefed.blahaj.zone)

submitted 2 weeks ago by erinmeow@piefed.blahaj.zone to c/networking@sh.itjust.works

5 comments fedilink hide all child comments

i have a ton of all russian subnets which i doesnt want route through vpn due vpn monitoring on rzzian faschist services, and services which blocking all non-rzzian ips

also since i wanna use wireguard(amneziawg obsurfication fork, since plain wg is blocked) on a openwrt system soooo maybe there are way to route all traffic thru wg interface but subnet list thru plain interface

aaaaaaaaa i dont have much openwrt stuff knowledge,

top 5 comments

sorted by: hot top controversial new old

[–] okwhateverdude@lemmy.world 3 points 2 weeks ago (1 children)

This is doable, just tedious by hand. Your favorite clanker can walk you through the steps to find a geoip datasource (eg. bootleg maxmind, ASN lists, etc), and either directly write the routes, or a script that will generate it from that source.

[–] erinmeow@piefed.blahaj.zone 3 points 2 weeks ago

https://github.com/C24Be/AS_Network_List, this repo give me idea make a script which generating a routes

[–] stratself 2 points 2 weeks ago (1 children)

You're probably interested in creating a firewall on openwrt that blocks all traffic from/to certain IPs

[–] erinmeow@piefed.blahaj.zone 2 points 2 weeks ago (1 children)

as i understand i can do by one subnet separatly but the problem that there are 1000+ subnets, maybe i dont know some feature to load an ipset file also uguguhguhg isnt parsing 1000+ subnets are load on cpu?

[–] SteveTech@aussie.zone 2 points 2 weeks ago

I'm not sure how a firewall would help, you'd definately want to do this from the routing table.

isnt parsing 1000+ subnets are load on cpu?

IPv4 addresses are basically just 32bit numbers, any somewhat modern CPU can check through 1000 routes in nanoseconds.

Also 1000+ seems a bit excessive, you should be able to aggregate some of those subnets into a few bigger ones. There are calculators online for this, or you can script it.