Viewing profile — champtar

There is also OVH (not affiliated, just happily using their VPS), but I would consider switching to 2 providers, as any provider can have data loss or just lock your account at any…

TIL `badblocks -t random` repeats the same random block over and over :(

Just being able to inject traffic is already huge as it allow you to send IPv6 router advertisement, which sometimes allows you to change the DNS config

You need working switch level filtering, many implementations can be bypassed / will never be fixed: https://blog.champtar.fr/VLAN0_LLC_SNAP/

CAP_NET_RAW also allow to capture packets (tcpdump) so you really can have some fun like running a TCP stack in user space or MITM http connections: https://blog.champtar.fr/IPv6_R…

Good news that it was found and fixed, but 140 days response time seems rather slow for such a critical vulnerability

Curious what are the main benefits ? (I've only ever used DD-WRT and OpenWrt)

In OpenWrt there is ujail, you give it an ELF (or multiple) to run, it'll parse them to find all the libraries they need, then it creates a tmpfs and mount bind read only the requi…

2 big address block that have few chances of conflict: - CGNAT 100.64.0.0/10 - "Benchmark" 198.18.0.0/15

It'll not, the new behavior is just a new naming scheme, and you just choose not to use any, which is totally fine if you have a single NIC.

You can easily keep the current naming behavior with the 'net.naming_scheme=' kargs

Hopefully the last breaking change. enoX should always stay stable, as it's the BIOS (in some ACPI table) telling that this device/port has this ID. ensX means the NIC in PCIe slot…

I once had to maintain a CalDAV server that was developed in house, computing the "free busy" with recurring events, exceptions, different timezone than the organizer + some DST is…

https://github.com/rustic-rs/rustic?tab=readme-ov-file#stabi... rustic currently is in beta state and misses regression tests. It is not recommended to use it for production backup…

If you want to use some object storage instead of local disk, rclone can be a restic server: https://rclone.org/commands/rclone_serve_restic/

I remember when contactless was introduced in France, someone from the CB bank card group ( https://en.m.wikipedia.org/wiki/CB_Bank_Card_Group ) said that contactless was secure be…

If you are using Microsoft Outlook mobile app or the webmail, inline or bottom posting experience is garbage, it doesn't quote/format the previous email, it just slaps it at the bo…

For timezones data go already has https://pkg.go.dev/time/tzdata

AWS EBS volumes (except io2) have an annual failure rate of 0.2%, so if you have 1000 running statistically you will loose 2. For io2 it's 0.001%, but still not 0.

With reproducible build you know that what you test on your dev laptop is the same as what will go out from your CI, and if hash mismatch you can chase why. For a concrete exemple,…

All EBS volumes except io2 have advertised durability of 99.8%, which is pretty low, so don't count it in the magic networked storage category.

You can securely store your asymmetric key for signing, but if I remember correctly the logs are pretty useless, basically you just know the key was used to make a signature, no op…

Well TOTP need proper time sync, and most routers don't have battery in them

u2f and webauthn require https ( https://developer.mozilla.org/en-US/docs/Web/API/Web_Authent... ), don't know if it accepts self signed certs and IPs instead of fqdn. Also the aut…

Both exemples generate custom nginx config