Selfhosted

39937 readers

334 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago

MODERATORS

[email protected]

How do I use an OpenWRT device as both an extender (for the main router) as well as a firewall + NAT box? (lemmy.world)

submitted 8 months ago* (last edited 8 months ago) by [email protected] to c/[email protected]

11 comments fedilink hide all child comments

Conceptually, it's fairly easy to understand - nftables, relayd, likely some firewall application.

However, is it as simple as configuring the WAN port as the WiFi interface and leaving it at that? Note that I'm not bothered about double NAT since I won't be opening any ports, and the main router cannot be touched.

I do want my own SSIDs, my VLANs, control over the firewall etc. Basically, my own network space. If anyone has done this/has an idea of the problems I might run into, please do comment!

Appreciate the help!

all 12 comments

sorted by: hot top controversial new old

[–] [email protected] 7 points 8 months ago (1 children)

Pretend the "main router" is a hotel wifi and use the TravelMate package.
https://github.com/openwrt/packages/blob/master/net/travelmate/files/README.md

[–] [email protected] 2 points 8 months ago (1 children)

Thank you! Could you explain a bit about what travelmate does under the hood? I'd like to know the basics of how it operates.

[–] [email protected] 2 points 8 months ago (1 children)

The main config needed is AP+Sta mode, which is explained here:
https://openwrt.org/docs/guide-user/network/wifi/ap_sta

[–] [email protected] 2 points 7 months ago

Thanks!

[–] [email protected] 5 points 8 months ago* (last edited 8 months ago) (2 children)

Do you even need relayd? I think relayd is for extending the existing NAT, i.e. a wireless bridge operation. At least that's how I utilized it in a previous setup. If you want to have your own NAT, I think it's enough to just connect to the upstream wireless network as a client. Not sure if you have to designate the wireless interface as WAN or not.

[–] [email protected] 1 points 8 months ago (1 children)

Depends if you want to assign IP addresses or not. If you don't, you just want your own section of the same lan, I.e.all your devices connected to your router but let dhcp pass through then you can just set itnup as an extender

[–] [email protected] 1 points 8 months ago

He mentioned that he wants to create Second level Nat, that will require new IP addresses and DHCP in the subnet

[–] [email protected] 1 points 8 months ago (1 children)

How would you do this? What would be the steps you take to create a double NAT + Firewall + DHCP server with the OpenWRT router behind the main router?

[–] [email protected] 2 points 8 months ago (1 children)

I think you basically need to do this. I see it mentions the wifi interface becoming WAN too.

[–] [email protected] 1 points 7 months ago

Thank you!

[–] [email protected] 1 points 8 months ago* (last edited 7 months ago)

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters	More Letters
AP	WiFi Access Point
IP	Internet Protocol
NAT	Network Address Translation

3 acronyms in this thread; the most compressed thread commented on today has 7 acronyms.

[Thread #585 for this sub, first seen 10th Mar 2024, 07:45] [FAQ] [Full list] [Contact] [Source code]