Cisco AnyConnect on Centos 7
I had to install AnyConnect 3 on my Centos machine (yes, I know, it is long past end of life – but sometimes you have to take one step back to take two steps forward) and when I launched it … Continue reading →
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Change timezone in Centos 7
You set up a machine – but you set the wrong timezone, how to fix it? First confirm the current timezone [root@mysystem ~]# date Mon Jun 3 09:08:58 CDT 2019 We will use the tool timedatect to change it. Now … Continue reading →
See what is going on as your Centos 7 system boots
I have had some problems with kernels, modules, drivers, services, etc causing Centos to lock up when the system boots. This is real annoying when it has that nice fancy graphical grey screen up with the spinning device at the … Continue reading →
Testing a TFTP server using Cenots 7
First su – yum -y install tftp If you are running iptables either: iptables -I INPUT -s ip.address.tftp.server -p udp -m udp –dport 2000:2020 -j ACCEPT 0r systemctl stop iptables If you are running firewalld Execute the command to permit … Continue reading →
Change Dell RAC password using cli
If you need to change the RAC password on a Dell server, there are two ways to do that: 1 – reboot the server and follow the prompts 2 – If you have installed openmanage on your Dell server you … Continue reading →
Stop firefox from forcing https://
I have to deal with some older printers that dont have https:// set up on them – but every time I try to access them using Firefox – it changes the URL from http://printername.or.ip to https://printername.or.ip First – in the … Continue reading →
Find the PID and Names of Virtual Machines on Centos 7
On my Centos 7 system, I wanted to find out which VM was taking up a large amount of the processor: top – 14:43:15 up 3 days, 7:49, 2 users, load average: 1.66, 1.79, 1.99 Tasks: 442 total, 1 running, … Continue reading →
DHCP and/or Ping does not work on inside interface on SRX 300
Problem: Traffic passes through to the outside/Internet on SRX, but the dhcp server does not assign ip addresses and you cannot ping the SRX from the inside Solution: The system services were blocked on the inside network. Example as follows: … Continue reading →
Backup your Juniper SRX every time you commit changes made to it
Add the following to your configuration Set up a location to scp your configurations to set up the time zone and ntp service – see my note Juniper – How to configure NTP Next – setup your host name:| set … Continue reading →
Disable ipv6 on a single interface or all interfaces
1. Append below lines in /etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 NOTE : To disable IPv6 on a single interface replace “all” on the first line with “eth0” or the name of the selected ethernet interface 2. To make … Continue reading →