Commands to manage F5 Active Connections
447View All Active Connections Use the command tmsh show /sys connection to view all active connections of all Virtual Servers of F5 unit [root@F5LB] config # tmsh show /sys connection Really display 1000 connections? (y/n) y Sys::Connections 126.96.36.199:50254 192.168.2.103:443 192.168.2.203:50254 192.168.2.41:7003 ..
Logging WL-Proxy-Client-IP and X-Forwarded-For to determine Client IP behind F5
216In order to determine the client IP that sends requests to a Web Server placed behind an F5 appliance, you can attach this iRule to your virtual server. This iRule logs the requested Client IP address under System > Logs > Local Traffic. This iRule logs following Client IP address Request URL X-Forwarded-For ..
Configure HTTP Monitor in F5
513Before we begin configuring the HTTP Monitor, use POSTMAN or other HTTP sniffer tool to understand REQUEST (Send String) and RESPONSE (Receive String) pair of the health check page. SEND STRING In this example, when client browser browse the health check web page /…/healthcheck.html, the client ..
Create SPF record for my domain
95Sender Policy Framework (SPF) helps to fight against email spoofing for your organization. SPF is generally a TXT record in DNS Zone file that lists the host name or IP address authorized for sending emails for a specific domain name. There is no other configuration required however the recipients must ..
tcpdump useful commands
322tcpdump is a packet sniffing command line tool to capture TCP/IP packets that are received or transmitted on a specific interface. This tool has been used widely for troubleshooting purpose, as well as for security assessments. The output of tcpdump command can be viewed using free wireshark tool. The above ..
Configure HSTS on F5 – Video Tutorial
201Our video tutorial explains how to configure HSTS – HTTP Strict Transport Security on F5 Appliance. There are 2 options available to configure Option 1 is using iRule Option 2 is using HTTP Profile, however this option is available from Version 12 onwards. Using iRule option, configure following ..
Find out bandwidth used on Cisco Switch
185#show interface summary command provides bandwidth utilization of each Cisco switch interface, VLAN and port channels. You can either measure bits per sec using RXBS/TXBS fields or packets per sec using RXPS/TXPS fields. Additionally you also get to know counts of pkts dropped in the interface. ..
UCCX: updating script caused error: Error while performing the operation. Please look into logs for more information.
267An error has occurred while saving a new UCCX script file in UCCX Publisher node. The message was “Error while performing the operation. Please look into logs for more information.“ If you encounter similar error, first identify the server roles, ensure they are properly set and finally try to apply ..
UCCX: Determine which server is currently the Master?
245In UCCX, there is no concept of Publisher/Subscriber, instead we have Master and Slave concept in UCCX. You can identify the role by following few steps. Login to each UCCX Server Navigate to Cisco Unified CCX Serviceability page Choose Tools > Control Center – Network Services menu Select the Server. ..
Cisco CUCM – Get User List Who have Logged into Phone
192As a Cisco CUCM administration, you may have to find out at some point of time, which users have logged in and to which Cisco phone. Here is how you can check. Login to CUCM Choose Devices > Phone Select ‘Actively Logged in Device Report’ from the drop-down list in the upper, right corner ..