Latest Server related questions

Score: 0
user3637971 avatar
Possible reasons about why Keepalived virtual IP was removed
ve flag

I have two servers 192.168.1.11 and 192.168.1.12 working with keepalived. The virtual IP is 192.168.1.13. It was working well for a month. Then I was notified that virtual IP was not available. I executed ping 192.168.1.13 and it showed 'Destination Host Unreachable'. Even though, when I executed systemctl status keepalived on both servers, They showed Active. So what I did was executing the command sys ...

Score: 0
Remove attributes from IIS applicationHost using WebAdministration module
my flag

In IIS, the physical path credentials are set in applicationHost.config like so:

<virtualDirectory path="/" physicalPath="C:\Path\to\files" userName="user" password="[enc:IISCngProvider:ENCRYPTEDBLOBHERE=:enc]" />

To set or change the value of userName and password, I can use Set-WebConfigurationProperty:

$xpath = "system.applicationhost/sites/site[@name='Default Web Site']/application[@path= ...
Score: 0
TCP Handshake and TCP RTT when using VPN
cn flag

From my server I'm measuring the TCP RTT and I was wondering what would be the difference between clients that use VPN compared to non-VPN clients.

So in the case of a non-VPN client the TCP session is established directly with the customer, which means that I'm actually measuring the RTT of the full path. What is happening with clients who connect through a VPN server?

Does the VPN server maintain  ...

Score: 0
How to set a task to run for a specific inventory group?
uz flag

The following task:

- name: Download Jfrog Artifcats
  ansible.windows.win_shell: |
    $ENV:JFROG_CLI_OFFER_CONFIG="false"
    jfrog rt download ...
  when: ???

should run only for machines that are located under center in the appservers group

---
all:
  children:
    root:
      children:
        center:
          children:
            appservers:
              hosts:
                vm1.domain.com:
 ...
Score: 0
SupportiveDante avatar
How would I make a network topology on KVM analogous to the internal network configuration on virtualbox?
kr flag

The differences in documentation between KVM docs and virtualbox docs make it difficult to find what I'm looking for

My goal is to do something like https://resources.infosecinstitute.com/topic/setting-pentest-lab-pfsense-virtualbox/ where all guests have IPs assigned by the pfSense guest, which also acts like a firewall between them and can itself be accessed by the host network. In this way I can practi ...

Score: 0
Quarantine status in Azure Active Directory sync
in flag

In January I installed AAD Cloud Sync Agent and it worked till the end of July. Checking Azure AD in the cloud the domain is in quarantine status and the installed agents list reports none. First question: was my agent, which worked for months, automatically removed from the list ?

Executing AAD Cloud Sync Agent Wizard again it reports the following error:

PowerShell: System.Net.WebException: Remote ...

Score: 0
anonymus1994.1 avatar
Apache alias ignored when used with ProxyPass
cn flag

I'm trying to install yotter on my server, and I want to use apache instead of nginx. The installation guide only lists an nginx configuration file, which I'm trying to "translate".

The config is three different proxy routes, the first one leading to a docker container, the second one (/static/) to a directory with stylesheets and stuff like that and the last one to a unix domain socket.

In my ca ...

Score: -1
MaxK123 avatar
Router doesn't have a public ip adress
mr flag

I have a problem with my ISP where my router gets a different ip adress compared to my external ip adress (the router doesn't have a public ip adress). I previously setup a VPN service with EdgeMax and I host some websites on a server. But sins the ip adresses differ I cannot acces them. I have thought about this a while and I think it could be solved using a reverse proxy server. How should I solve thi ...

Score: 0
Windows RAID drive performance suddenly dropped
ru flag

I have a Windows system that has as a data drive, one RR640L controller. Attached to this controller are four 2TB drives in a RAID5 configuration (2 Seagate ST2000VN000 and 2 Samsung HD203WI).

Suddenly, read performance from this (logical) drive has plummeted. This is the most-used drive, so the impact was noticeable immediately. Running a routine backup (just a robocopy to an 8TB SSD) I'm get ...

Score: 2
Is DNSSEC useful?
fr flag

DNSSEC validate and authenticate zone data with the purposeto make sure that whatever DNS results, those are genuine.

  1. Even if a DNS resolver validates that an authoritative nameserver has send the right data untampered, how do we prevent the DNS resolver from sending tampered DNS response to the DNS client?

  2. If the DNS resolver does not support DNSSEC, can it still send DNS queries to an authoritative ...

Score: 1
DNS resolver vs NS record TTL
fr flag

If a zone has 6 NS records

When a DNS resolver lookup a domain/zone for an authoritative name server, does it take in all 6 records and cycle through them ?

If a resolver use the 1st NS server and cached it according to its TTL - when that authoritative name server is not responding, does the resolver still honor the TTL of the NS record ?

As illustrated in this writeup from imperva - it seems like eve ...

Score: 0
Aaron avatar
How to restrict AWS access to queries from specific domain names?
in flag

Hello, this is my first post on Server Fault, so please feel free to edit/correct etiquette.

I am managing a server at work that we have hosted on AWS. Recently, it has fallen victim to a DDoS attack. Luckily, this is only a staging server (right now), but in the future, we plan to use an API on it on a production application.

Currently, I have stopped the attack by limiting access (via AWS securit ...

Score: 0
rbhat avatar
Determining why Windows server is responding so slow?
kr flag

We have Windows Server 2019 Standard 10.0 with a Microsoft SQL Server 2016 (SP2-CU17). This server is inside network OurCompany. It also has IIS 10.0 that's hosting an asp.net web app.

I use this web app frequently from my work PC (also inside network OurCompany) but lately, I've noticed lots of Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server i ...

Score: 0
Yephy Wang avatar
After the server restarts, the network card fails. How can I solve it?
in flag

As the question is, I use the Google Cloud VM, and the following error occurs after restarting, and the external network cannot be connected. How can I solve this problem?

Aug 12 23:30:01 server systemd: Created slice User Slice of root.
Aug 12 23:30:01 server systemd: Started Session 37 of user root.
Aug 12 23:30:01 server systemd: Removed slice User Slice of root.
Aug 12 23:33:40 server NetworkMa ...
Score: 0
Cannot add extra ip addresses on Ubuntu 20.04. using netplan
cn flag

My servers has 10.20.10.100 ip address on eno1 interface.

I can successfully add temporarily ip address 10.20.50.60 (or any else).

When I try to add permanently using netplan I cannot connect to server anymore using it original ip address.

Content of my original /etc/netplan/00-installer-config.yaml:

network:
  ethernets:
    eno1:
      dhcp4: true
    eno2:
      dhcp4: true
    enx7e8ae1d2cba7: ...

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