Most Popular
1500 questions
75
votes
4 answers
Your system administrator does not allow the use of saved credentials to log on to the remote computer
At our office, all of our Windows 7 Clients get this error message when we try and RDP to a remote Windows 2008 Server outside of the office:
Your system administrator does not allow the user of saved credentials to
log on to the remote…
Pure.Krome
- 6,608
- 18
- 73
- 88
75
votes
12 answers
Does changing default port number actually increase security?
I have seen advice saying you should use different port numbers for private applications (e.g. intranet, private database, anything that no outsider will use).
I am not entirely convinced that can improve security because
Port scanners exist
If an…
Sam
- 975
75
votes
5 answers
How do I protect my company from my IT guy?
I'm going to hire an IT guy to help manage my office's computers and network. We're a small shop, so he'll be the only one doing IT.
Of course, I'll interview carefully, check references, and run a background check. But you never know how things…
Jesse
- 1,910
- 3
- 23
- 28
75
votes
18 answers
Do you skip a rack unit between servers?
It seems like there's a lot of disagreement in mindsets when it comes to installing rackmount servers. There have been threads discussing cable arms and other rackmount accessories, but I'm curious:
Do you leave an empty rack unit between your…
Matt Simmons
- 20,486
75
votes
2 answers
How do I edit the crontab of another user on my linux server?
I have a user on my linux server who has sudo. I want to edit the crontab of another user. I'm new to this though and don't understand what the man pages are telling me yet.
Man crontab tells me I can use this format for the crontab…
bflora
- 889
75
votes
6 answers
How can I check in bash if a shell is running in interactive mode?
How can I tell (in ~/.bashrc) if I'm running in interactive mode, or, say, executing a command over ssh. I want to avoid printing of ANSI escape sequences in .bashrc if it's the latter.
Alex B
- 1,774
74
votes
13 answers
SSD or HDD for server
Issue
I have read many discussions about storage, and whether SSDs or classic HDDs are better. I am quite confused. HDDs are still quite preferred, but why?
Which is better for active storage? For example for databases, where the disk is active all…
genderbee
- 891
74
votes
4 answers
Why disable swap on kubernetes
Since Kubernetes 1.8, it seems I need to disable swap on my nodes (or set --fail-swap-on to false).
I cannot find the technical reason why Kubernetes insists on the swap being disabled. Is this for performance reasons? Security reasons? Why is the…
Jeroen Jacobs
- 1,396
74
votes
6 answers
Why are CA root certificates all SHA-1 signed (since SHA-1 is deprecated)?
I understand that SSL certs cannot be signed using SHA-1 anymore. Yet, all CA root certificates are SHA-1 signed (mostly). Does it mean the same algorithm that is no longer trusted for "you grandma SSL shop" is fine for the uttermost top secured…
131
- 897
74
votes
4 answers
failed to get D-Bus connection: Operation not permitted
I'm trying to list services on my CentOS image running in Docker using
systemctl list-units
but I get this error message:
Failed to get D-Bus connection: Operation not permitted
Any suggestions what the problem might be?
Snowcrash
- 1,157
74
votes
5 answers
Which OS is running in my Docker container?
Most of the time, using one of these two, I can tell which OS is running in my Docker container (alpine, centOS, etc)
But this time, I can't tell:
bash-4.2$ uname -a
Linux 6fe5c6d1451c 2.6.32-504.23.4.el6.x86_64 #1 SMP Tue Jun 9 20:57:37 UTC…
Bob Yoplait
- 851
74
votes
2 answers
Create a directory under /var/run at boot
I had a daemon that needed its own dir in /var/run for its PID file with write permission granted to the daemon's user.
I found I could create this dir with these commands:
# mkdir /var/run/mydaemon
Then I could change its ownership to the…
user24601
- 993
74
votes
8 answers
Why is the response on localhost so slow?
I am working on a tiny little PHP project for a friend of mine, and I have a WAMP environment setup for local development. I remember the days when the response from my local Apache 2.2 was immediate. Alas, now that I got back from a long, long…
Peter Perháč
- 1,069
74
votes
3 answers
nginx: Log complete request / response with all headers?
We have an application server that sometimes hangs. We suspect it is due to a bad request from a client.
Can nginx log the complete request/response (like fiddler captures) to files, so we can see the requests that were sent before the hang?
(We…
74
votes
6 answers
How to remove strict RSA key checking in SSH and what's the problem here?
I have a Linux server that whenever I connect it shows me the message that changed the SSH host key:
$ ssh root@host1
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST
IDENTIFICATION HAS CHANGED! @
…
setatakahashi
- 1,487