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Questions tagged [testing]

243 questions
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How do I test my firewall rules?

I've setup some rules in ufw on a remote server and I've turned the firewall on. Now I want to ensure my rules actually block traffic. However, when running nmap -PN -p from my local workstation it appears the port I'm blocking is…
Dane O'Connor
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What does negative value of -1 in kB_rd/ and kB_wr/s mean in PIDSTAT command

This is a sample output from running pidstat. minflt/s majflt/s VSZ RSS %MEM kB_rd/s kB_wr/s kB_ccwr/s 49 0 217532 18784 0.01 -1 -1 -1 Can you please tell me how to manipulate the values in terms…
Subiah R Nagarajan
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Is there a good way of doing a random UDP data transfer at a specific bitrate to test QoS policies?

I'm trying to test some QoS policies I'm implementing on a router between two networks. I have two linux servers, one on each network, and I'd like to simulate data transfer between them so I can see if the QoS is effective. The data is mostly UDP,…
growse
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What should we test before buying a second hand cisco router

For some scenarios buying second hand cisco products it's a very good options. It could even be the only possible solution. I have network knowledges but I am not very familiar with CISCO. I would like to know what tests would you make before buying…
zordor
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Creating a test database with copied data *and* its own data

I'd like to create a test database that each day is refreshed with data from the production database. BUT, I'd like to be able to create records in the test database and retain them rather than having them be overwritten. I'm wondering if there is a…
Jordan Reiter
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How to Make a WMI call fail?

I'm a developer but I have a question that seems belongs more in the ServerFault category than StackOverflow. We have a production service that every so often tends to throw: System.Runtime.InteropServices.COMException: Call was canceled by the …
Nick Gotch
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Sabotaging an apache server

Bit of an odd one this. We have a very political management situation brewing and as the developer looking after the interaction with the hosting company, I have been asked to perform a bit of sabotage to test out our infrastructure providers…
Nick Downton
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Infrastructure-oriented testing Methodology

In software development, there are plenty of testing methodology that one can adopt during the software lifecycle. Is there anyone aware of a testing methodology that is infrastructure oriented or that can simply be applied to implement tests for an…
m0ntassar
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What is the best server or Ip address to use for prolonged testing?

I usually run uptime/latency tests against (and from) two servers that we own at different sites and until recently I've used the google dns servers as a control group. However, I've realized there is a potential problem with monitoring latency…
eldorel
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run and track SMART tests of harddisks

At our shop we have nagios checks for the SMART status of hard disks in linux servers, but it hasn't been really useful so far: by the time we get a SMART alarm the system already had problems so we already knew about it :) We then developed a…
Luke404
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Upgrading from Exchange 2003 to Exchange 2010, routing works in one direction only

I'm in the process of upgrading an Exchange 2003 server to Exchange 2010, and have installed the prerequisites and Exchange 2010 on the new hardware I've purchased. We use postfix on the perimeter to handle external SMTP connections, and Exchange…
Bryan
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Best tool for QoS testing

The problem is that, i cant find good tool for QoS configuration testing(linux). I have some switches and configured QoS on them. Installed two PC's with wireshark for watching whether switches are colouring packets, so thats ok. But how to check…
TiFFolk
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Simple proxy server for development

For some development purposes I need to use a proxy server with authentication to test applications. I use Squid but sometimes I just need a simple configurable proxy where I need to provide hostname/ip address, username, password and port and run…
sultan
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Affordable iSCSI SAN Suggestions

Our little snowboarding company currently has three NetGear ReadyNAS units that I am ready to put through a wall. Every few months I start looking into the possibility of consolidating down to one unit that doesn't suck and that can also work as an…
VSack
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Simulate HPC application data to test WAN filesystem performance over a large link

So here is the setup: we've got temporary access to a very large TCP WAN connection and we want to use this pipe to do WAN filesystem testing. We would like to generate massive amounts of data on the fly, writing it to the filesystem on the other…
n0suchth1ng
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