tofubl

I have a home setup with private services and Wireguard to phone in from outside, and would sometimes like to be able to access some of these services from devices that don't have their own Wireguard client like an eBook reader.

Ideally, I would have Wireguard on my Android phone, create a WiFi hotspot and allow other devices to use that Wireguard connection. Out of the box this doesn't work. Does anybody know how to achieve it?

In my home network, I'm currently hosting a public facing service and a number of private services (on their own subdomain resolved on my local DNS), all behind a reverse proxy acting as a "bouncer" that serves the public service on a subdomain on a port forward.

I am in the process of moving the network behind a hardware firewall and separating the network out and would like to move the reverse proxy into its own VLAN (DMZ). My initial plan was to host reverse proxy + authentication service in a VM in the DMZ, with firewall allow rules only port 80 to the services on my LAN and everything else blocked.

On closer look, this now seems like a single point of failure that could expose private services if something goes wrong with the reverse proxy. Alternatively, I could have a reverse proxy in the DMZ only for the public service and another reverse proxy on the LAN for internal services.

What is everyone doing in this situation? What are best practices? Thanks a bunch, as always!

Hi there, hoping to find some help with a naive networking question.

I recently bought my first firewall appliance, installed Opnsense and am going to use it with my ISP modem in bridge mode, but while I'm learning I added it to my existing LAN with a 192.168.0.0/24 address assigned to the WAN port by my current DHCP. On the firewall's LAN port I set up a 10.0.0.0/24 network and am starting to build up my services. So far so good, but there's one thing I can't get to work: I can't port forward the firewall's WAN IP to a service on the firewall's LAN network and I can't figure out why.

To illustrate, I would like laptop with IP 192.168.0.161 to be able to reach service on 10.0.0.22:8888 by requesting firewall WAN IP 192.168.0.136:8888.

Private IPs and bogons are permitted on the WAN interface and I have followed every guide I can find for the port forwarding, but the closest I have come to this working is a "connection reset" browser error.

Hope my question is clear and isn't very dumb. Thanks for the help or any explanation why I might be struggling to get this to work. Am I missing something obvious?

UPDATE The thread is all over the place, but I have made some progress:

• RDR rule gets triggered when requesting 192.168.0.136:8888 from 192.168.0.123
• Apache logs show 2024-02-09T17:39:17.056208857Z 192.168.0.123 - - [09/Feb/2024:17:39:17 +0000] "GET / HTTP/1.1" 200 161
• a tcpdump (in spoiler below) on the apache container looks inconspicuous to my untrained eye, with the exception of checksum errors in some packets from the docker container (172.20.0.2). The last five lines, after the second GET request (why is there a second GET request?) appear in tcpdump after a delay of about five seconds.
  tcpdump

    192.168.0.123.54120 > 172.20.0.2.80: Flags [S], cksum 0xfdc5 (correct), seq 4106772895, win 64240, options [mss 1460,sackOK,TS val 1485594466 ecr 0,nop,wscale 7], length 0
17:45:14.918207 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 60)
    172.20.0.2.80 > 192.168.0.123.54120: Flags [S.], cksum 0x6d68 (incorrect -> 0x2fd7), seq 3999845366, ack 4106772896, win 65160, options [mss 1460,sackOK,TS val 1469298770 ecr 1485594466,nop,wscale 7], length 0
17:45:14.924098 IP (tos 0x0, ttl 62, id 63128, offset 0, flags [DF], proto TCP (6), length 52)
    192.168.0.123.54120 > 172.20.0.2.80: Flags [.], cksum 0x5b30 (correct), ack 3999845367, win 502, options [nop,nop,TS val 1485594472 ecr 1469298770], length 0
17:45:14.924102 IP (tos 0x0, ttl 62, id 63129, offset 0, flags [DF], proto TCP (6), length 134)
    192.168.0.123.54120 > 172.20.0.2.80: Flags [P.], cksum 0x70f5 (correct), seq 4106772896:4106772978, ack 3999845367, win 502, options [nop,nop,TS val 1485594472 ecr 1469298770], length 82: HTTP, length: 82
        GET / HTTP/1.1
        Host: 192.168.0.136:8888
        User-Agent: curl/7.74.0
        Accept: */*

        <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
        <html>
         <head>
          <title>Index of /</title>
         </head>
         <body>
        <h1>Index of /</h1>
        <ul></ul>
        </body></html>

17:45:14.924119 IP (tos 0x0, ttl 64, id 34500, offset 0, flags [DF], proto TCP (6), length 52)
    172.20.0.2.80 > 192.168.0.123.54120: Flags [.], cksum 0x6d60 (incorrect -> 0x5ad1), ack 4106772978, win 509, options [nop,nop,TS val 1469298776 ecr 1485594472], length 0
17:45:14.924407 IP (tos 0x0, ttl 64, id 34501, offset 0, flags [DF], proto TCP (6), length 364)
    172.20.0.2.80 > 192.168.0.123.54120: Flags [P.], cksum 0x6e98 (incorrect -> 0x0a74), seq 3999845367:3999845679, ack 4106772978, win 509, options [nop,nop,TS val 1469298776 ecr 1485594472], length 312: HTTP, length: 312
        HTTP/1.1 200 OK
        Date: Fri, 09 Feb 2024 17:45:14 GMT
        Server: Apache/2.4.58 (Unix)
        Content-Length: 161
        Content-Type: text/html;charset=ISO-8859-1
17:45:14.929077 IP (tos 0x0, ttl 61, id 0, offset 0, flags [DF], proto TCP (6), length 40)
    192.168.0.123.54120 > 172.20.0.2.80: Flags [R], cksum 0x1833 (correct), seq 4106772978, win 0, length 0
17:45:15.138862 IP (tos 0x0, ttl 62, id 63130, offset 0, flags [DF], proto TCP (6), length 134)
    192.168.0.123.54120 > 172.20.0.2.80: Flags [P.], cksum 0x701e (correct), seq 4106772896:4106772978, ack 3999845367, win 502, options [nop,nop,TS val 1485594687 ecr 1469298770], length 82: HTTP, length: 82
        GET / HTTP/1.1
        Host: 192.168.0.136:8888
        User-Agent: curl/7.74.0
        Accept: */*

17:45:15.138872 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 40)
    172.20.0.2.80 > 192.168.0.123.54120: Flags [R], cksum 0xb48d (correct), seq 3999845367, win 0, length 0
17:45:19.995097 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 172.20.0.1 tell 172.20.0.2, length 28
17:45:19.995161 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has 172.20.0.2 tell 172.20.0.1, length 28
17:45:19.995164 ARP, Ethernet (len 6), IPv4 (len 4), Reply 172.20.0.2 is-at 02:42:ac:14:00:02, length 28
17:45:19.995164 ARP, Ethernet (len 6), IPv4 (len 4), Reply 172.20.0.1 is-at 02:42:b8:07:c2:99, length 28```


***

**UPDATE 2**
I see the exact same behaviour with a second VM and apache directly installed on it instead of in a docker container.

***
**UPDATE 3**
Thank you everybody for coming up with ideas. And thank you most of all to [@[email protected]](https://lemmy.world/u/maxwellfire): The culprit was the `Filter rule association` in my Port Forward settings which I had as `Add associated filter rule` but needs to be `Pass`. As soon as that is set, everything works.

The full solution is a NAT Port forwarding rule with filter rule "pass", an outbound NAT rule for hairpinning, and everything related to reflection turned off in Settings > Advanced. It's that easy! 😵‍💫

Nextcloud seems to have a bad reputation around here regarding performance. It never really bothered me, but when a comment on a post here yesterday talked about huge speed gains to be had with Postgres, I got curious and spent a few hours researching and tweaking my setup.

I thought I'd write up what I learned and maybe others can jump in with their insights to make this a good general overview.

To note, my installation initially started out with this docker compose stack from the official nextcloud docker images (as opposed to the AIO image or a source installation.) I run this behind an NGINX reverse proxy.

Sources of information

• Server tuning on Nextcloud Docs: Most of this are very basic things that are already taken care of in the docker image or in the proxy companion image I'm using. The one thing I haven't tried and that comes up in other places, too, is using Imaginary for image preview generation.
• How to migrate Nextcloud 17 Database Backend from MySQL to postgreSQL
• Eking out some Nextcloud Performance mainly talks about using a socket connection for redis, but also mentions logging to syslog (have not found a good source of information for this), using postgres, using imaginary for image previews

Improvements

Migrate DB to Postgres

What I did first is migrate from maridb to postgres, roughly following the blog post I linked above. I didn't do any benchmarking, but page loads felt a little faster after that (but a far cry from the "way way faster" claims I'd read.)

Redis over Sockets

I followed above guide for connecting to Redis with sockets with details as stated below. This improved performance quite significantly. Very fast loads for files, calendar, etc. I haven't yet changed the postgres connection over to sockets since the article spoke about minor improvements, but I might try this next.

EDIT Postgres over Sockets

I'm now connecting to Postgres over sockets as well, which gave another pretty significant speed bump. When looking at developer tools in Firefox, the dashboard now finishes loading in half the time it did before the change; just over 6s. I followed the same blog article I did for Redis.

Outlook

What have you done to improve your instance's performance? Do you know good articles to share? I'm happy to edit this post to include any insights and make this a good source of information regarding Nextcloud performance.

Hi fellow self-hosting lemmings,

In an SME setting, I'm looking for a service to regularly fetch mails from an IMAP server and print incoming mails and attachments on a local network printer based on rules (e.g., only print mails where the subject contains a specific word.)

Does a solution like that exist, ideally with a browser frontend to set it up?

Thank you!

Hi everyone, looking for help with an SSD/Win problem: My Thinkpad with Win11 has been acting up lately, and I am fairly sure the problem is with the SSD (very high disk load on startup and shortly before each of the many many crashes.) I would like to avoid having to set up my system from scratch.

I have a new SSD and have tried the following:

• leave bitlocker intact, boot into Ubuntu live, dd the old disk to an external USB drive, install new SSD, dd disk to new SSD
• same as above but with bitlocker disabled
• boot into Clonezilla live, clone old SSD to external storage, clone external storage to new SSD
• clean Windows install on new SSD and clone c: partition to new SSD with Clonezilla

All of these attempts invariably lead to an "INACCESSIBLE_BOOT_DEVICE" blue screen, and "bootrec /fixboot" and the like executed from the recovery CMD shows "0 Windows installations found." Booting into Ubuntu live with the cloned SSD installed I can see all my user data intact with no apparent problems.

Is my old SSD/Windows installation broken beyond repair and do I have to accept it and move on or am I missing something?

Thanks for any help or pointers!