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Reverse PTR record lookup not working with dig

As mentioned here, having a Reverse PTR record is key for successful email sending and delivery from one's own server. In order to check if it's correctly set for my server, I tried: dig -x 111.111....
1
vote
1answer
1k views

Tomcat - deployed .war file does not show

I'm running a TomCat 7.0.11 everything worked fine, till I deployed a new .war file. Using the manager the only message I get is OK but after refreshing the List of Applications no App appears. ...
2
votes
1answer
21 views

Docker bridge network shadows IP of SSH client, how to recover gracefully?

We're running a RHEL 7 VM with Docker to host a couple of internal services. Last time I ran docker-compose up to spin up a new Docker container, I lost my SSH connection to the server and could also ...
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0answers
5 views

Locating “Timeout on hotplug command”

I have a set of machines identical in hardware, and almost identical in softare setup. But one of them is filling up /var/log/messages with: Jun 16 09:41:37 h0stname kernel: pciehp 10000:00:00.0:...
4
votes
1answer
584 views

Unable to add interface to network namespace on boot

I have problem with adding a phyisical ethernet interface to a predefined namespace , adding that to interfaces file in pre-up/post-up event do not work. It adds eth to namespace, but ip address and ...
0
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0answers
9 views

Can I use keepalived and ipvsadm in different datacenter?

There are two servers located in a different data center. We want to make active active cluster with keepalived and ipvsadm. So it is possible. Or it works only in the same data center?
0
votes
2answers
25 views

How to solve “The forward DNS lookup (domain name to IP address) of your IP should match the HELO value set in your server.” issue

My IP is blacklisted in spamhouse this is the message they sent me but I have no idea how to fix it my domain is www.monstermmorpg.com my domain ip is : 198.245.73.82 I did setup DKIM and SPF ...
1
vote
2answers
26 views

Distributing load over multiple load balancers

Given a website that could have many hundreds of thousands of concurrent users at peak times how can one manage the laod where load balancer resources can only support 40,000 concurrent connections? (...
0
votes
1answer
2k views

nginx - 502 Bad Gateway ubuntu 14.04 aws ec2 django project + gunicorn

I'm trying to get my django project up and running on an aws ec2 instance. I'm using gunicorn with nginx, and I'm not really sure how I can tackle this problem. I've spent a couple hours on it already,...
2
votes
2answers
2k views

isc-dhcpd static ip within range

I have a isc-dhcpd server with dhcp-range 10.0.0.10 - 10.0.0.20. There is also a device connected with static ip 10.0.0.10. What would happen when a client with dynamic ip connects to the network? ...
0
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0answers
9 views

Complicated path mapping in nginx/docker

I have an index.php inside $docroot/v[0-9]+/index.php. I want to map all paths in the request of the form /name/v1/rest/of/the/path?anything=else&even=more to be handled by /$version/index.php ...
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votes
0answers
12 views

SMTP “root+:”|sleep 5 #“” what is meant by this query i found it in dataset of smtp protocol

what is "root+:"|sleep 5 #" in SMTP, I have found this line in dataset of SMTP protocol I have attached a picture of dataset, any one who can help me by explaining whats happening in it....
0
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0answers
13 views

HP DL380G6 disks reuse to another array

I have a DL380G6 with p410i controller (windows OS). HDD Config is: SAS Array A - 1 logical drive, RAID 5 SAS Array B - 1 logical drive, RAID 1 (2 x 450GB HDD) SAS Array C - 1 logical drive, RAID 1 (...
5
votes
3answers
39k views

SVN - Error Rep Repository UUID 'XXX…' doesn't match expected 'XXX..'

Zend Framework's SVN server went down yesterday, now it's back I'm still getting an error from my external 'Zend' directory. Whenever I try to update or switch to another branch I get this error. ...
0
votes
1answer
17 views

How to remove the shutdown button from a Windows VM (on Azure)

I have an a Windows 2016 VM on Azure that several users are RDPing into. The users are complaining that the VM shuts down at random times. When I check the logs, it shows that the shutdown has been ...
0
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0answers
29 views

Suspicious users with numbers are devouring entire CPU

On my test server which I have docker-run gitlab-ce, redis server and some other important services, I noticed I have an uninvited guest, kdevtmpfsi. I tried everything proposed by the community but I ...
0
votes
2answers
2k views

Is it possible to block email sender names in sendmail on CentOS?

We have been getting a lot of fake emails sent to employees acting like our CEO and our firewall is not capable of blocking specifically what we want. The emails come in from regular gmail accounts ...
0
votes
2answers
3k views

Exchange 2010 to/from 2016 mail flow

i just introduced an exchange 2016 server to our existing 2010 environment, the installation and configuration went well, but now i'm having a problem on sending and receiving an email from/to 2010 ...
0
votes
0answers
14 views

overlapping NFS shares

in /etc/exports I have: /home XXX.XXX.XXX.128/25(rw,no_subtree_check,root_squash) 192.168.1.0/24(rw,no_subtree_check,root_squash) /home/user XXX.XXX.XXX.128/25(rw,no_subtree_check,root_squash) 192....
0
votes
0answers
14 views

Hp switch - enable promiscuous interface but prevent possibile attack

i'm facing a strange request my client have done to me and i would like some help. He ask me to put a probe in promiscuous mode in my ced between my network and the mpls than connect us and them for ...
1
vote
2answers
26 views

Windows time service sync to external ntp servers only if they coincide

I recently had a problem which I've never seen occur before. One evening around 2030 one of the DC's changed its clock back an hour. This server syncs to two addresses in pool.ntp.org. Nobody was ...
0
votes
1answer
20 views

How do I get a normal disk going (PERC H710 Mini) with perccli?

https://i.stack.imgur.com/kSQan.jpg https://i.stack.imgur.com/9utPQ.jpg I have a Dell PowerEdge R720 which boots up and has 1.7 TB of drive space but I can't seem to get any of it and use it. When I ...
-2
votes
0answers
28 views

Wheather 127.0.0.1 traffic hits the physical network or not

As per this answer, which says that: Not all 127.0.0.1 traffic never hits the physical network, it gets processed by a loop back adapter in the kernel. The poster has a high reputation. I think all ...
0
votes
0answers
9 views

Juniper EX4200 Stack with PFSense DHCP (Discover/Offer Loop)

I'm currently struggling with my Juniper Switch Stack. Topology is like this Topology The Client Ports on the Stack are configured as tagged-access with dot1x (multiple supplicant) and they switch ...
2
votes
1answer
2k views

WSUS Synchronization Schedule - Once per month?

WSUS has no option for syncing once per month. It requires a daily synchronization. Is it possible to change this to once per month through GPO or other means? Is the only other option to manually ...
0
votes
1answer
2k views

Exchange 2013 CU18 install fails with ADObjectAlreadyExistsException

I'm updating from Exchange 2013 RTM to Exchange 2013 CU18. Exchange upgrade is failing currently with the following error... Microsoft Exchange Server 2013 Cumulative Update 18 Unattended Setup ...
4
votes
4answers
1k views

Cannot add verified publisher MPN ID to Azure multi-tenant app

To allow the users of our platform to sign in using their Microsoft account, we've created an app in our Azure Active Directory as per the documentation. I configured everything appropriately, until ...
0
votes
1answer
27 views

apache how configure multi domain https redirection?

I've an apache running under AWS Elastic beanstalk. I've got several different domains and I want all of them to end in a specific domain name, in HTTPS. The redirection from other domains e.g. https:/...
1
vote
0answers
24 views

Ubuntu SFTP hide unauthorized subfolders

I currently run Ubuntu 20.04 Desktop server. And I am using the SFTP function by installing OpenSSH on the server. For testing purposes, I temporarily created a directory called /home/mydirectory/...
0
votes
1answer
40 views

Not able to place a lien on a project

I am trying to set the VPC sharing for my organization. To start with I am trying to create a lien on central project. Even though I am the oranizational admin, I am not able to set restrict lein ...
0
votes
1answer
21 views

Using ansible loop until with stdout_lines

I am trying to use ansible loop until the condition is met. I can use until if the output is only single line, however if the output is multiple lines, I will need to use stdout_lines but fail to do ...
0
votes
1answer
49 views

LINUX - Last login for root user

on a redhat server I logged with my domain username, and then switched as root. As I switched as root I received the message for the last login for root (Last login: ....). I am asking if the "...
2
votes
1answer
1k views

pfSense and ESXI WAN

I have a dedicated server which came with ESXI 6.5 pre-installed. There is just one IP dedicated to this, the management IP: 62.121.90.xx/27 from where I can log to ESXI. This instance had just one ...
0
votes
1answer
2k views

Mod_evasive not blocking a DOS attack using HEAD requests

Using Apache/2.2.15 on RHEL6 with mod_evasive config: DOSHashTableSize 3097 DOSPageCount 14 DOSPageInterval 2 DOSSiteCount 70 DOSSiteInterval 1 DOSBlockingPeriod 60 ...
0
votes
0answers
34 views

MariaDB crashes frequently

I'm suffering from MariaDB crashing issue for a weeks running on VPS Debian 10. I searched a lot in the internet ,but couldn't found any solution. I tried this , this, this etc... but seriously I didn'...
1
vote
1answer
2k views

web service deployment does not appear in weblogic admin console

We have an ear project created with Netbeans 8.1 and the Maven Project wizard. Running WLS 12.1.3. The project contains some EJBs and a jax-ws web service using the standard jax-ws annotations. For ...
0
votes
1answer
2k views

Multiple TAP devices on OpenVPN Server

So we have a number of clients that have their own VPS instances which we host via Proxmox. The clients servers are all behind a NAT firewall and we forward ports per client request to our various ...
1
vote
1answer
1k views

How to serve static files with version number with Nginx?

I just finished installing Nginx for wordpress but all static files with ?ver=x is redirecting to nginx's default page. Working /jquery-ui-1.8.6.custom.min.js Redirecting to default Nginx page ...
0
votes
1answer
1k views

.Net SqlClient Data Provider error when comparing keys in powershell DB install

I am trying to install Databases on a new windows 7 machine with powershell code that was meant for windows xp. I have been able to fix most of the problems as I have come across them but I have been ...
0
votes
0answers
13 views

Unable to push docker image into GCP container registry [permission error]

I am trying to push a docker image into my container registry on google cloud platform. I am able to build my image successfully on my local machine. I tried the following command: sudo docker push eu....
0
votes
1answer
38 views

Using hostname only instead of FQDN in certificate

Can a localhost's name be used on a self signed certificate and used internally for the applications running on the same localhost? I am just trying to test my applications with certificates. Forgive ...
0
votes
1answer
50 views
+50

Trying to get sudoers working on openldap/centos7

I was following this tutorial here: https://kifarunix.com/how-to-configure-sudo-via-openldap-server/ A lot of it made sense, but still new to openldap so some of this is cryptic too. I have the ...
0
votes
3answers
10k views

How can i make my custom “name@example.com” e-mail adress if i'm the owner of “example.com”

Greetings. The question is very clear. I have a ".com" domain for 2 years. The only thing that i can modify is the nameservers, ns1, ns2, and ns3. How can i make my own e-mail adress for this domain?...
0
votes
1answer
1k views

AWS RDS Cannot modify database instance due to IAM DB Authentication

I have a MySQL 8.0.13 instance running on AWS RDS. AWS documentation says that MySQL 8.0.* does not support IAM DB Authentication. This seems to be true, however my DB somehow has IAM DB ...
1
vote
1answer
2k views

Weblogic server hangs when “Creating data source connection pool named”

I have just installed Weblogic version 10.3.6.0 and created a data source which connects to MSSQL on my localhost. I have tested my connection and verified that a successful connection can be made ...
0
votes
1answer
2k views

Trying to configure VPN client using l2tp on Ubuntu 18.04 to connect to Cisco meraki security device

I am trying to configure VPN client on ubuntu18.04 that will connect to VPN service on Cisco Meraki security device using l2tp over IPSec but I am getting error in the logs on both ends. Errors in ...
1
vote
1answer
1k views

Exchange 2010 immediate bounceback no generated server

I am having some problems with emailing to a couple of specific gmail addresses, but not all gmail addresses. I'm running Exchange 2010. Here is the error: Diagnostic information for administrators:...
0
votes
0answers
29 views

Firewall “any any” rules - Should I remove all these rules?

I inherited a server from another dev that left. And the hosting is telling me to remove all these firewall rules, because these can cause security problems. Not sure if I'm understanding this ...
-1
votes
0answers
10 views

Raspberry Pi Zero gadget mode doesn't work [closed]

I'm trying to set up my Pi Zero (w/ camera connector) to be a USB plug-in gadget. I've seen that it's possible, for example, here: https://learn.adafruit.com/turning-your-raspberry-pi-zero-into-a-usb-...
1
vote
0answers
15 views

What is the exact meaning of “On Commit” in ISC DHCP server configuration?

I know there are three kinds of events we can use for scripting in ISC dhcpd -- commit, expire and lease. My problem is, I am having a little problem in understanding the "commit" event. I ...

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