Latest Server related questions

Score: 0
Ethernet/UIB device is accessible on one system but not the other (Linux)
gb flag

A Universal Interface Board connects to the computer via Ethernet. On a correctly configured system (A), arp -a lists its MAC address and establishes a connection. The connection appears to happen through/dev/ttyACM0

arp -a
...
(10.0.0.100) at d8:80:39:27:d5:4b [ether] on eth1
...

On the other system (B), the device is visible, yet its MAC address is hidden and it is not possible to establish a connec ...

Score: 0
Nguyễn Lê Quốc Đạt avatar
vsftpd can not interact over VPN with iptables
de flag

I'm attempting to setup a file tranfer from 2 internal networks over VPN. The topology below: Network Topo

In virtual ftp server, I config iptables to NAT ftp ports with rules: iptables rules

From ftp client, I can success connect and login successful with anonymous to ftp server in zone B. However, I get this error:

ftp> open 172.16.3.65 21 Connected to 172.16.3.65. 220 (vsFTPd 3.0.3) 331 Pl ...

Score: 0
Arvind Singh avatar
Azure Virtual Machine Scale Set error: The selected virtual network has a default subnet with a reserved name
us flag

What makes a subnet as default if not the name or lower starting IP? Getting below error on selecting a virtual network:

enter image description here

Below are the subnets configured
Name                IPv4            Available IPs
default             10.0.0.0/24     251
GatewaySubnet       10.0.1.0/24     availability dependent on dynamic use
AzureFirewallSubnet 10.0.3.0/26     56
Bot-subnet          10.0.4.0/24     251

Edit: ...

Score: 1
BitWrangler avatar
Resolved: Fix WSUS Server Cleanup crashing on deleting unneeded updates
jp flag

WSUS has always been the bane of every IT Admin existence. How many threads do you find all with the same issue - the Server Cleanup wizard failing. The text below worked for me.

I've tried multitudes of SQL scripts both from Microsoft and in the public domain, all with mixed results. Last week our WSUS server again began coughing furballs so I paid the money and opened a support ticket. The  ...

Score: 1
NeitoFR avatar
Can't password-connect with SSH to CentOS7 machine we sent a password packet, error
cn flag

I'm trying to reach a machine (CentOS7) over SSH with password authentication.

The machine is on a private network off the internet. I tried to connect from a Windows 10 host and from another CentOS7 server (and from VSCode SSH Remote Extension). From the 3 client i'm having a similar error (describe a little below)

It was working perfectly last Friday. The only thing different I have noticed is tha ...

Score: 0
Looking for experienced advice for switching from Azure AD Registered Devices to Hybrid in Azure AD Connect
br flag

I'm looking for hints, tips, and information on what the end-user may noticed during the change from Azure Active Directory Registered devices to Hybrid Azure AD Joined devices.

My organization currently uses Azure AD Connect to sync our local AD to Office 365. We don't use much in Azure, but I need to start using Endpoint Manager for BitLocker and other management policies. To do this, I need to chang ...

Score: 1
keeplearningtogether avatar
nftables - limit rate behavior (error or misusage ?)
nl flag

I am trying to set up a firewall with nftables but I failed to understand and implement a simple rate limit based on the documentation I have found.

  • OS : Ubuntu 20.04 LTS
  • nftables version : 0.9.3 (Topsy)
  • kernel release: 5.8.0-53-generic

I have built the test firewall with the below sequence of commands:

nft 'add table inet testnetwork'
nft 'add chain inet testnetwork INPUT { type filter hook input prior ...
Score: 1
Manu avatar
Apache Guacamole Login with User from DomainA, rdp to Server from DomainB
us flag

Overview

We log into Gucamole with a User from DomainA where we select a rdp-connection to a server from DomainB.

Trusts

DomainA to DomainB and vice versa:

  • Type: External
  • Kerberos AES Encryption support: no
  • Direction: two-way
  • Transitivity: no
  • Authentication: Domain-wide

Permissions

User from DomainA has been joined to the local Remote Desktop Users group on the Server from DomainB. Have temporarily al ...

Score: 1
ndemou avatar
pfsense: After restoring config boot stops at "TSC: P-state invariant"
cn flag

I'm setting up a brand new pfsense and it works fine. Then I restore the configuration from another working installation and when I try to reboot it freezes soon after mouting the / partition and detecting the CPU. The last line in my screen is:

TSC: P-state invariant
Score: 0
roelvanmeer avatar
How many reserved blocks are needed to avoid ext4 filesystem fragmentation?
ie flag

On a typical ext4 filesystem, 5% of blocks can only be allocated by privileged processes. According to the manpage of tune2fs:

Reserving some number of filesystem blocks for use by privileged processes is done to avoid filesystem fragmentation, and...

The default of 5% can become a sizable chunk of disk, in modern large storage systems. Although this may seem like a lot, ensuring that data on a ve ...

Score: 0
No internet access after config iptables
id flag

After that configuration:

iptables -P INPUT DROP
iprables -A INPUT -j DROP
iptables -P OUTPUT ACCEPT
iptables -A OUTPUT -j ACCEPT

Now can't access internet normally or through VPN. What's wrong?

Score: 0
Slipgate avatar
On premise SpamTitan appliance injecting IP routes
cn flag

We recently migrated to a new firewall and most things were okay apart from email flow. There was a queue on SpamTitan which wouldn't release. When I checked the routing table, rather than using the default gateway it had been routing directly to the old firewall (rather than to the core L3 switch). The only way to fix it was to reboot the appliance. However, it's still bypassing the default gateway and ...

Score: 0
lazarea avatar
Trouble connecting to company VPN through Windows 10
us flag

I have been trying to connect to my company's VPN for days in vain now. I haven't used a VPN on my Windows 10 laptop before. I added the new VPN connection to Settings - Network & Internet - VPN: provided the server name, VPN type (L2TP/IPSec with pre-shared key), pre-shared key, type of sign-in info (username and password), and the username and password I was given. When trying to connect, I get th ...

Score: 0
stigzler avatar
Problems setting up a Reverse Proxy on IIS
tw flag

Please forgive the newb question, but I'm a bit out of my depth with this one.

I'm running a Windows 2016 Server at home. I'm trying to set up nextcloud as a personal cloud. I have successfully installed nextcloud as a virtual machine on VirtualBox and can access it on my lan via (let's say) 192.168.1.75. This takes me to the main web application. I can also access the Webmin interface through 19 ...

Score: 0
Zeeshan avatar
disk-image-builder create command fails with status 1
in flag

Here is the command which is failing for disk-image-create command:

disk-image-create -a amd64 -o ./overcloud-full -t qcow2 -p python-psutil,python-debtcollector,sos,device-mapper-multipath,openstack-heat-agents,os-net-config,jq,dbus-python,yum-plugin-priorities --min-tmpfs=7 --mkfs-options -s size=4096 centos7 baremetal dhcp-all-interfaces openvswitch overcloud-agent overcloud-base overcloud-contr ...

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