Pairing to your Bluetooth Mobile Phone
Pair the SUPERTOOTH BUDDY to your Bluetooth mobile phone to create the
link or audio connection between the two. The pairing process is required only
once for each phone. (more…)
Many NAT firewalls time out idle sessions after a certain period of time to keep their trunks clean. Sometimes the interval between session drops is 24 hours, but on many commodity firewalls, connections are killed after as little as 300 seconds. To avoid having your SSH sessions become unresponsive after e.g. 5 minutes, do the following:
Using Command Line.
I am using /etc/X11/xorg.conf file in Ubutnu 14.04, which has below lines written in it.
Option "BlankTime" "60"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
And it is working fine in Ubuntu 14.04 but not working in Ubuntu 16.04.
We use ELK stack heavily in our production systems for log aggregation and monitoring.
Our daily log size generated is aroudn 100GB. Since, we do not intend to keep the log files in ELK for more than a month, it becomes important that we delete those indices to free up disk space.
Fortunately, Logstash creates a new index every day by default. (more…)
Postfix a way to limit the frequency of brute force?
In file /usr/local/etc/postfix/main.cf place something like the following:
# RATE THROTTLING
smtpd_client_connection_rate_limit = 20
smtpd_error_sleep_time = 10s
smtpd_soft_error_limit = 3
smtpd_hard_error_limit = 5
To simply view the logs on your system, you can execute the following command:
This will display the logs with the oldest entries first. Although this is simple, it is not very useful since we do not tend to read logs like a book.
By default journalctl displays the logs in a pager. It shows you one page of logs requiring you to hit the space bar to proceed.
Diplaying Logs by Date (more…)
The answer to the question of “how do I upgrade?” is always “it depends”, because everyone’s situation is going to be slightly different. This blog will cover some of the most straightforward ways which should apply in the majority of cases.
Either of the following two methods would work in most circumstances:
Backing up and restoring the existing configuration to a new installation
Maintaining completely separate domain and node directories and pointing the new version to the existing directories (more…)