Search results

  1. gpw928

    Solved Raw access to block devices?

    It seems likely to me that GELI defaults to a 4K sector size, even when the underlying device has 512 byte sectors. My encrypted swap was made using all the defaults (by adding ".eli" to the swap partition named in /etc/fstab): [gunsynd.138] # geli list Geom name: vtbd0p2.eli State: ACTIVE...
  2. gpw928

    Solved Raw access to block devices?

    As suggested above, GELI wants 4K blocks: [gunsynd.894] $ su Password: [gunsynd.129] # dd if=/dev/vtbd0p2.eli of=/tmp/swapdump count=1 dd: /dev/vtbd0p2.eli: Invalid argument 0+0 records in 0+0 records out 0 bytes transferred in 0.000246 secs (0 bytes/sec) [gunsynd.130] # dd if=/dev/vtbd0p2.eli...
  3. gpw928

    Solved Raw access to block devices?

    Special files tend to get their contents changed in real time by the operating system because they contain things like swap space and file systems. However, there is no technical problem reading a special file, provided you have permission, and choose an appropriate method. If you tell us what...
  4. gpw928

    Solved How To Make ntp In Server Mode Work?

    You don't appear to be using the default ntp.conf, which includes the following: # Security: # # By default, only allow time queries and block all other requests # from unauthenticated clients. # # The "restrict source" line allows peers to be mobilized when added by # ntpd from a pool, but does...
  5. gpw928

    Solved Are my hard drives dying or the motherboard going bad?

    Yes, because they are designed, tested, and warranted to do that, and I can see that you understand the sorts of issues at play...
  6. gpw928

    Solved What would be today the fastest and most secure way to copy 4TB of data in a LAN?

    You don't say if it's possible to quiesce /myhostdata, and if so for how long. When faced with data transfers of this size between production systems, with on-line access from multiple countries, I would use rsync over a private gigabit network with the fastest cipher ("-c none" was easy to...
  7. gpw928

    Solved Are my hard drives dying or the motherboard going bad?

    My personal opinion is that spinning drives up and down repeatedly is a bad idea unless they are specifically designed to operate in such a heavy duty cycle. I would, instead, look to the operational environment of the drives. Both ambient temperature and airflow really matter for durability...
  8. gpw928

    Solved Are my hard drives dying or the motherboard going bad?

    I have been able to clear Current_Pending_Sector (197) and Offline_Uncorrectable (198) errors in the past by re-silvering the disk (which allows the firmware to relocate bad blocks that were in use by the O/S). This does require redundant storage... However, my experience is that any...
  9. gpw928

    Backdoor man is still alive.

    You need to have xz at 5.6.1. FreeBSD 13.3 and 14.0 aren't impacted. Though it looks malicious from a maintainer who has been around for a couple of years doing things... Edit: I just found this older this older post.
  10. gpw928

    UFS Copy usb image to hdd and boot from it

    You need to tell us which FreeBSD "image" you used, and what you did with it. Here I used FreeBSD-13.3-RELEASE-amd64-mini-memstick.img, and the dd command to write that file to a USB stick (on Linux) was: sudo dd if=FreeBSD-13.3-RELEASE-amd64-mini-memstick.img of=/dev/sda conv=sync,fsync...
  11. gpw928

    Intel NIC i-226v

    You can have a look at the igc driver and verify the support for your I226-V as follows: [gunsynd.148] $ pwd /usr/src/sys/dev/igc [gunsynd.149] $ grep -i 125c * igc_hw.h:#define IGC_DEV_ID_I226_V 0x125C [gunsynd.150] $ grep -i IGC_DEV_ID_I226_V * if_igc.c: PVID(0x8086...
  12. gpw928

    Intel NIC i-226v

    I have Intel Corporation Ethernet Controller I225-V (rev03) and I226-V (rev 04) NICs. My I226-V NICs look very much like yours. I can confirm that the I225-V (rev03) works under FreeBSD 14.0 and the I226-V (rev 04) works on both FreeBSD 13.3 and FreeBSD 14.0, when plugged into a gigabit switch...
  13. gpw928

    Storytime: My new internship - Advice?

    I suggest you look at the history of Randal L. Schwartz with Intel and the State of Oregon. What he was trying to do was improve security at Intel. That got him convicted on three felony counts. Twelve long years later, with a lot of help (because he was very well known in the Perl community)...
  14. gpw928

    Other Question for rsnapshot users, rsync experts

    Without knowing your usage case, it's difficult to make specific recommendations -- inode turn-over depends greatly on file system activity. Unfortunately, my office, including my rsnapshot (ZFS) server, is packed up in cardboard boxes at the moment. Observations below are how it used to be...
  15. gpw928

    Other Question for rsnapshot users, rsync experts

    With rsnapshot it's usual to set aside backups on a regular basis. For instance I have an annual set of backups for all my clients going back more than a decade, and a monthly set of backups kept for several years. This won't completely solve your issue of "losing files you have deleted"...
  16. gpw928

    Solved Networking broken after upgrade to 14.0-RELEASE-p5

    Your window decorations are very familiar. I ran fvwm on FreeBSD, for many years. /etc/rc.d/ntpdate extracts the names of time servers from /etc/ntp.conf. It looks like your network is up, but your name server is not translating those time server names to IP addresses. What happens if you...
  17. gpw928

    How do I protect my host from rogue DHCP servers?

    Your ISP should not be allocating addresses from the private address spaces described in RFC-1918: Class-A Private Networks (10.0.0.0/8) Class-B Private Networks (172.16.0.0/12) Class-C Private Networks (192.168.0.0/16) The above addresses can not be routed (i.e. visible) on the Internet...
  18. gpw928

    Hardware for firewall/DNS/proxy recommendation

    I have benchmarked both AX88179 and AX88179A USB3 adapters on amd64 FreeBSD systems. They both run at near gigabit wire speed (935 Mbits/sec) so long as your host USB port is rated for USB3.[12] Gen 2. However the AX88179 chipset suffered from the driver doing occasional resets. The AX88179A...
  19. gpw928

    Hardware for firewall/DNS/proxy recommendation

    I run firewalls on a couple of Raspberry Pis (a 3B and a 4). But I use Debian and iptables, not FreeBSD. They are quite satisfactory (and don't sweat with only 4 GB memory). However you have to match their Ethernet adapter throughput with your Internet service. What's the rated speed of your...
  20. gpw928

    What do you find the most great scientific accomplishment ?

    I think the application of the scientific method to vaccines which has saved millions of lives. In that field, many have stood on the shoulders of others, and none had broader shoulders than Robert Koch who conclusively established germ theory through his experiments with anthrax.
Back
Top