Snort logs in csv
I’m trying to get the output of snort log file in csv format. For this in snort.conf, I added output alert_csv: alert.csv default but there is no alert.csv file created. How do I access this file?
Category Archives: snort
Confusion Matrix for Generated Signatures in Snort
How do we come with True Positives and False Negatives rates when creating signatures in IDS? How do we measure the signatures efficiency? I’ve seen so many papers that discuss the same, but how do they come up with these num… Continue reading Confusion Matrix for Generated Signatures in Snort
What can be wrong with this simple Snort Rule?
i’m using snort since some weeks now and today i want to use it in order to trigger alert for some content in the case of HTTP requests.
So i try a simple rule like this one in order to begin..
alert tcp any any -> any an… Continue reading What can be wrong with this simple Snort Rule?
Help with testing snort
I have been learning how snort works for a school project I am working on. I am hoping to launch specific types of network attacks against snort like port scanning, DoS, Sql injection, etc.
I am sadly very inexperienced wit… Continue reading Help with testing snort
Issue with Snort installation Pi
Anyone met the below issue when attempting to install (from source) Snort 2.9.12 on Pi?
/home/pi/Desktop/snort/snort_2912/snort-2.9.12/src/preprocessors/HttpInspect/utils/h2_common.c:791: undefined reference to `nghttp2_ses… Continue reading Issue with Snort installation Pi
Understanding SID Output [on hold]
I need assistance understanding an SID that was triggered in our Cisco FirePower device.
The particular SID is 30918 and the details are below:
alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (
msg:”MALWARE-CNC U… Continue reading Understanding SID Output [on hold]
OpenAppID with Snort on pfSense
I’m using OpenAppID with Snort on pfSense, it actually work but when I view some script detector, it just detect by http pattern, which I can replace by using snort rule (with “content” option). So what is different between i… Continue reading OpenAppID with Snort on pfSense
Snort sfportscan preprocessor not logging port scans correctly
I am trying to get the sfportscan preprocessor to log SYN port probing but it does not appear to be operating correctly.
I have a .pcap file with portscan traffic which can be seen in wireshark using the filter:
( tcp.flags… Continue reading Snort sfportscan preprocessor not logging port scans correctly
How to run a snort rule over PCAP file in Windows?
I have a PCAP file from CICIDS, and what I’d like to know is how can I apply the Snortrule in Windows? I’ve not written any custom rules myself but want to run the rules already available. For now, the snort.rules file is emp… Continue reading How to run a snort rule over PCAP file in Windows?
Snort rule for syn flood attacks – Limiting number of alerts
So I have a snort rule that detects syn flood attacks that looks like this:
alert tcp any any -> $HOME_NET 80 (msg:”SYN Flood – SSH”; flags:S;
flow: stateless; detection_filter: track by_dst, count 40, seconds 10;
GID:1; sid:10000002; … Continue reading Snort rule for syn flood attacks – Limiting number of alerts