F1 Blog Space
Some helpful stuff thats going on
is collected here...
F1 Blog Space
We at F1-CONSULT work on really cool and amazing stuff
and discover and learn something new everyday.
F1 Blog Space
Here some of our
Musings, Ramblings, Observations
to keep a record of our sometimes really hard learnings.
All 53
All 53 /ASA 2 /BIND 1 /CISCO 0 /CISCO Security 0 /CUBE 5 /Debian 3 /Email 3 /github 1 /IOS-XE 1 /IPSEC 1 /LAN 1 /Linux 7 /Microsoft 0 /MySQL 1 /News 1 /Postfix 1 /QOS 1 /Security 10 /SEO 1 /SMTP 0 /SSD 1 /Storage 0 /Ubuntu 1 /VCSA 1 /VMWare 1 /VOICE 0 /WEB 0 /Windows Server 2 /WLAN 1 /WLC 2 /WordPress 1 /ZFS 4
CISCO ASA – %ASA-6-722036 Transmitting large packet 1418 (threshold 1347)
2021-02-05/by wriedelRFC 4594-Based 12-Class QoS Model
2020-05-07/by wriedelThe CyberWire
https://twitter.com/CVEnew
2020-04-18/by wriedelCentOS – Installer just goes black screen on Centos8
Problem:
During installation of CentOS the installer screen goes…
2020-06-25/by wriedelDuring installation of CentOS the installer screen goes…
vCenter Server Appliance 6.5 fails to boot
2019-04-26/by wriedelCISCO IOS XE – passwords will soon be deprecated
2020-12-25/by wriedelZFS – Replacing a dead disk in a zpool
replacing-a-dead-disk-in-a-zpool
[crayon-60753f5521638376675848/]
[crayon-60753f552163e974800712/]
Find…
2018-02-13/by wriedel[crayon-60753f5521638376675848/]
[crayon-60753f552163e974800712/]
Find…
Common Vulnerabilities and Exposures – CVEannounce
https://twitter.com/CVEannounce
2019-01-14/by wriedelCommon Vulnerabilities and Exposures – CVEnew
https://twitter.com/CVEnew
2019-01-14/by wriedelHow to force fsck at every boot in Linux
In /etc/init.d/checkfs.sh is the line if [ -f /forcefsck…
2019-01-05/by wriedelTop 10 Best Proxy Server and online Proxy
proxysite.com proxy.orgFilterbypass.meUnblocker.usprox…
2019-01-02/by wriedelZFS – CENTOS Downgrade
ZFS - Downgrade Commands for Centos:
To do the downgrade/re-install…
2018-09-14/by wriedelTo do the downgrade/re-install…
Risk Management Frameworks
Risk Management Frameworks
Risk Assessment should be considered…
2018-10-01/by wriedelRisk Assessment should be considered…
Deteque
https://twitter.com/deteque
2018-11-13/by wriedelSpamTEQ
https://twitter.com/spamteq
2018-11-13/by wriedelThreat Modeling
Application Threat Modeling
Application Threat modeling should…
2018-10-01/by wriedelApplication Threat modeling should…
LINUX – Network Throughput Tuning
General Approach
To check what setting your system is using,…
2018-09-14/by wriedelTo check what setting your system is using,…
CentOS – How do I safely delete old kernel versions ?
package-cleanup:
Using package-cleanup command which is a…
2018-09-14/by wriedelUsing package-cleanup command which is a…
ZFS – SNMP
ZFS - SNMP Extend Commands:
[crayon-60753f5522d04617015431/…
2018-09-12/by wriedel[crayon-60753f5522d04617015431/…
ZFS – Tuning
ZFS tuning for SAS3 Storage Tank
[crayon-60753f55231f7745226671/]
ZFS…
2018-09-13/by wriedel[crayon-60753f55231f7745226671/]
ZFS…
CentOS – NIC Teaming with LACP
A Comparison of Features in Bonding and Team
Feature
Bonding
Team
broadcast…
2018-09-10/by wriedelFeature
Bonding
Team
broadcast…
Debian – How do you select the fastest mirror from the command line?
I want to update my sources.list file with the fastest server…
2018-08-31/by wriedelGit – use a proxy
Configure Git to use a proxy
##In Brief
You may need to configure…
2018-08-13/by wriedel##In Brief
You may need to configure…
Linux – iproute2 Cheat Sheet
Overview
iproute2 is the Linux networking toolkit that…
2018-07-30/by wriedeliproute2 is the Linux networking toolkit that…
Clamav – Virus Protection
ClamAV: Description:
[crayon-60753f552fab4163121630/]
ClamAV:…
2018-04-09/by wriedel[crayon-60753f552fab4163121630/]
ClamAV:…
Linux – Permissions
In order to update and change file permissions,…
CISCO CUBE SIP DEBUGS
How to capture SIP traffic on a router
monitor…
2018-07-12/by wriedelmonitor…
Debian – How to disable snmpd ia_addr insert messages?
You have Debian and Ubuntu servers which runs snmpd service and are…
2018-07-14/by wriedelHow to Disable or Enable Disk Write Caching in Linux
ATA-Based Disks
Check out whether disk caching is enabled…
2018-07-10/by wriedelCheck out whether disk caching is enabled…
Tools to check website keyword ranking
AntRanks - Keyword Rank Tracking in Search Engines
Authority…
2018-05-30/by wriedelAuthority…
CISCO CUBE SipGate
1. Cisco Unified Border Element with Support for Multi-VRF
Cisco…
2018-02-12/by wriedelCisco…
Debian – How to delete broken packages
1. remove broken packages
[crayon-60753f5532ebd528208177/]
2.…
2018-02-08/by wriedel[crayon-60753f5532ebd528208177/]
2.…
Ubuntu – How to fix broken packages
1. fix broken packages
[crayon-60753f5533481926178984/]
2.…
2018-02-08/by wriedel[crayon-60753f5533481926178984/]
2.…
Microsoft Windows Server 2016 – NFS Share
How To Mount An NFS Share In Windows Server 2016
Install NFS…
2018-03-05/by wriedelInstall NFS…
How to Delete All VSS Shadows and Orphaned Shadows
2018-06-25/by wriedelCybersecurity Conferences
2018-05-26/by wriedelNetwork Operating Systems
Network Operating Systems
This page is an attempt…
2018-06-19/by wriedelThis page is an attempt…
DSGVO
Datenschutz-Grundverordnung DSGVO 2018
Kompakt und aktuell:
Die…
2018-05-18/by wriedelKompakt und aktuell:
Die…
GDPR
GDPR
GDPR effects any company that handles personal data of…
2018-06-06/by wriedelGDPR effects any company that handles personal data of…
CISCO IOS and IOS-XE Call Routing
In Depth Explanation of Cisco IOS and IOS-XE Call Routing
Source: https://www.cisco.com
Updated:June…
2018-06-04/by wriedelSource: https://www.cisco.com
Updated:June…
Solid State Drives Technology Comparison – SLC, MLC, TLC NAND
SSDs (Solid State Drives) use NAND flash chips. Each of these…
2018-06-01/by wriedelPostfix – DNSBL Providers
The complete IP check for sending Mailservers
DNSBL (DNS…
2018-02-23/by wriedelDNSBL (DNS…
Email Encryption with PGP
OpenPGP is a non-proprietary protocol for encrypting email communication…
2018-05-22/by wriedelCISCO – WLC – AP Not Joining Controller – %DTLS-3-HANDSHAKE_FAILURE
Cisco WLC AP cert issue: %DTLS-3-HANDSHAKE_FAILURE
WLC error…
2018-04-02/by wriedelWLC error…
CISCO – WLAN – Factory Reset
How to restore the factory settings on a Cisco Access Point
1.…
2018-04-03/by wriedel1.…
IPSec Overhead
What is IPSec?
IPSec, is a framework of open standards (from…
2018-04-09/by wriedelIPSec, is a framework of open standards (from…
CISCO – WLC – Trouble Shooting Commands
Common outputs from the WLC for further analysis
[crayon-60…
2018-04-04/by wriedel[crayon-60…
CISCO ASA LDAP AAA Error ‘AAA Server has been removed’
Problem:
Attempting to test AAA authentication via LDAP to a…
2018-02-20/by wriedelAttempting to test AAA authentication via LDAP to a…
CISCO CUBE SIP TRACES
source: supportforums.cisco.com
Ayodeji Okanlawon
SIP…
2018-03-01/by wriedelAyodeji Okanlawon
SIP…
CISCO CUBE SIP DEBUGS
Source: supportforums.cisco.com
Muthurani…
2018-03-01/by wriedelMuthurani…
MySQL – How to Back Up and Restore a Database
Declarations
Database: [dbname]
User: [uname]
Password:…
2018-02-14/by wriedelDatabase: [dbname]
User: [uname]
Password:…
BIND – Response Policy Zones (RPZ)
ISC Webinars:
https://www.isc.org/mission/webinars
ISC Webinar…
2018-02-13/by wriedelhttps://www.isc.org/mission/webinars
ISC Webinar…
WordPress – auto-update via proxy
Here a brief config snipped to allow Wordpress to
use a…
2018-02-07/by wriedeluse a…
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