Tag Archives: logging

statistical data from Citrix ADC / NetScaler APPFW logs

Sometimes, people want to know, how to extract data from APPFW logs. That’s easy, it is in /var/log/ns.log (and it’s predecessors, these ns.log.XX.gz). grep APPFW ns.log will extract all application firewall logs. zcat ns.log.*.gz |grep APPFW will do the same to the old logs. Unfortunately this will give you a… Read more »

Detecting Slowloris with Citrix NetScaler (Citrix ADC)

Last update: Nov 21th, 2018 tested using firmware 11.1 If you read about slowloris, you always read about NetScaler doing a great job. Tests in our lab environment show: NetScaler will successfully block these attacks. And there is hardly anything we have to do about it: It’s built into the… Read more »