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driftWood

@ driftWood @infosec.pub

Posts
5
Comments
23
Joined
3 yr. ago

  • Study concludes cybersecurity training doesn’t work

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  • The dedication to your task is commendable 👏. This is becoming rare day by day.

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  • If you want extra users I believe you can create them in ignition file, so that way they get created when MicroOS is deployed.

    Basically anything you want as part of 'default' setup has to be configured via ignition file.

  • How does a computer create a 'Response' packet? - Infosec.Pub

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  • Woah! Thanks for taking the time to write the detailed response. Will take a look at the source code. Really appreciate the effort ❤️

  • How does a computer create a 'Response' packet? - Infosec.Pub

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  • I added more comments on the original post which describes the situation a bit more.

    Don't know what's a good way to get the comments linked to this post.

    Do take a look if you are interested.

  • How does a computer create a 'Response' packet? - Infosec.Pub

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  • Standards are set of rules. But still different vendors implement them separately. For e.g. TCP/IP stack implementation is a bit different in Windows and Linux but end user generally never realises this because it's close enough that things still work. I want to know what is the sequence of events when Linux creates a Response packet for a ping Request it received.

  • How does a computer create a 'Response' packet?

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  • I recently tested this using wireshark. When I run packet capture on nic1 of dstPC I see ping request packets coming, but no response packets leaving the interface. On nic2 I don't see any packets leaving either. So kind of stumped what is happening. It seems the computer just drops the response packet and it never makes it till any nic. But still don't have a good explanation of WHY the packet gets dropped.

  • How does a computer create a 'Response' packet?

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  • OK this is what I was thinking too. So consider this scenario:

    srcPCnic1 - 192.168.1.100/24 DG: 192.168.1.1 dstPCnic1 - 192.168.2.100/24 dstPCnic2 - 192.168.1.101/24 DG: 192.168.1.1

    Topology: srcPCnic1 -> RTR -> dstPCnic1 Assume srcPCnic1 is also connected to dstPCnic2 via a switch. (Sorry if its difficult to imagine with the crude description)

    On srcPC execute: ping 192.168.2.100 RTR will route the packet to dstPC. dstPC receives the packet on nic1. dstPC sends the Response packet via nic2.

    Is the above understanding correct?

  • Linux @lemmy.ml
    driftWood @infosec.pub

    How does a computer create a 'Response' packet? - Infosec.Pub

    infosec.pub /post/15458682
  • Network Engineering @infosec.pub
    driftWood @infosec.pub

    How does a computer create a 'Response' packet?

  • "Hardware Error" after power failure

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  • Respect 🙏

  • What're some of the dumbest things you've done to yourself in Linux?

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  • This weirdly makes sense to me. Not long ago would have done the same.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • Not really. Just has to run till at least 5years at least. Since this will be deployed at customer site, pine64 and android both are not feasible. Thanks for the suggestion though.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • Thanks. Will take a look.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • I have one in the lab at office. Were abt to be thrown out. Nursed it back to life somehow. Good to play around plus company foots the electricity bill so win-win.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • Agreed. This is for customer site. At home i would do the same thing on a PI.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • I know. I felt while writing the post that this feels wrong writing those words in same sentence. The scenario is that we would deploy the hardware on customer premises so it has to be supported and very reliable(hence enterprise grade). But i personally think that all enterprise grade hardware is way overkill for running ansible playbooks. So was trying to see if there is an intersection point between these opposite requirements.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • Thanks for these suggestions. Will look into them. Hopefully they are still manufactured and supported by the vendors.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • So this will be deployed for customer sites. I dont think they will be happy with second hand stuff from ebay 😀 For my personal stuff i would have been happy with that though.

  • Suggestions for cheap enterprise grade hardware to run linux headless.

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  • Budget is not an issue actually. This is going to be deployed for customers but i want to it to be as cheap aspossible to get them maximum value for their money. Software stack is going to be minimal. Probably alpine linux or ubuntu server. Spec wise i think even an i3 level cpu is fine. Ram 8gb, hard disk 256 gb ssd should be more than enough. Dont require any fancy wireless stuff like wifi and Bluetooth.

  • Sysadmin @lemmy.world
    driftWood @infosec.pub

    Suggestions for cheap enterprise grade hardware to run linux headless.

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  • XCP-NG with XOSTOR working?

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  • Figured it out. I had created 3 VMs but was trying to created shared storage between 2 xcp-ng instances. I assumed that this can be done and the 3 instance will only act as witness without contributing to the storage.

    After going through many replies on the forum thread I understood that you need minimum 3 hosts participating in the storage. Modified my setup to match the requirements (was easy since they are just VMs) all the instructions worked correctly.

    The error about missing linstor python module was that I hadn't installed necessary packages on 3rd host in the pool since I assumed it doesn't require XOSTOR instructions to be run on it since it would not be participating in shared storage. This is my understanding though and I can be wrong.

    Having written above I think I can still have only 2 hosts participating in storage but just need to install necessary packages on third host also. Will try and see how it goes.

  • Sysadmin @lemmy.world
    driftWood @infosec.pub

    XCP-NG with XOSTOR working? - Infosec.Pub

    infosec.pub /post/6578440
  • Selfhosted @lemmy.world
    driftWood @infosec.pub

    XCP-NG with XOSTOR working?