I'm tryin to extract multiple IPv4 addresses from a single field that are separated by ","
Example string: "badips":["123.456.789.12","123.456.789.13","123.456.789.14"]
Expected output of field badips with values 123.456.789.12 123.456.789.13 123.456.789.14
^[^\[\n]*\["(?P<badips>\d+\.\d+\.\d+\.\d+) gets me the first IP
^[^\[\n]*\["(?P<badips>.*?)\"] gets me 123.456.789.12","123.456.789.13","123.456.789.14 with the "," in between.
I'm trying to come up with something dynamic because there will be atleast 1 IP in the field, but there could be more. ] will always follow the last IP
I'm new to regex and any help will be greatly appreciated. I have a regex cheat sheet and have been working at this all day, just can't seem to get it
You should use capture groups:
(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})+
demo here
Additional information about your implementation (language, regex flavor) will help us give you a better answer.
Related
I'm trying to learn RegEx using ImmersiveLabs/LinkedInLearning and other web-based resources and things are going well.
There's a small question to which I'm not sure how to even Google for an answer.
Scenario, Azure ATP Query wherein I wanted to match Private Addressing Scheme
| where From_IP matches regex #'(^127\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)|(^192\.168\.)'
It works well! Matches what I want it to. The question is - why?!
For e.g. (~172.2[0-9].) shouldn't this only match on the first two octets of the string 172.20.1.9 ? Why is then the entire IP matched successfully?
Seems weird for me to question something that is working. Any tips are appreciated.
There is no $ in your regex so your regex does not asserts position at the end of a line, so it basically doesn't care what comes after 172.20. , see for more info: regex101.com/r/TgjdVz/1
In addition to match all private IPv4 subnets use to following regex.
^(10(\.(25[0-5]|2[0-4][0-9]|1[0-9]{1,2}|[0-9]{1,2})){3}|((172\.(1[6-9]|2[0-9]|3[01]))|192\.168)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{1,2}|[0-9]{1,2})){2})$
I have a regular expression as follows:
"id.resp_h"|"rx_hosts":(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}),
I am trying to extract the Source IP Address from two different log samples. "id.orig_h" and "tx_hosts" are two different fields for Source IP. How do i ignore the speech marks and square brackets? i just want extract the IP addresses
schema_id=17127524534057985804:skip_writers="":{"_path":"conn","_system_name":"hostname","_write_ts":"2020-01-12T22:09:28.853417Z","ts":"2020-01-12T22:07:14.642074Z","uid":"Cm4cbmvRjlmd2I52c","id.orig_h":"192.168.1.1","id.orig_p":xxx,"id.resp_h":"192.168.1.2","id.resp_p":xxx,"proto":"udp",
schema_id=17223896091372211545:skip_writers="":{"_path":"files","_system_name":"Hostname","_write_ts":"2020-01-12T22:09:00.016260Z","ts":"2020-01-12T22:07:14.108217Z","fuid":"FnmzOv3Fkhr8lP0qL","tx_hosts":["192.168.1.1","192.168.1.1"],"rx_hosts":["192.168.1.10"],
Any help would be gratefully appreciated :-)
Thanks,
JM
Try this if you want to solve it with regex:
(?:"id.resp_h"["[:]|"rx_hosts"["[:])(\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3})
See here
my log files got two ip src-ip:132.23.35.1, dest-ip:10.23.56.1.
I 'm using regex:
\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}
it gets two IPs, if I want to retrieve IP address of src-ip (in this case, 132.23.35.1) how to do?
I expect to get ip of source-ip and dest-ip separately.
You could try
(?<=src-ip:)(.*)(?=,)
Example output from regexr
The regex code has been adapted from: Regex Match all characters between two strings
Could someone help me with some REGEX...
I have been blocking internal traffic using the filter pattnrn:
10.*..
This just bit me in the foot as this is blocking all referral traffic between our sites.
What I want to do now is block everything except 10.103..
Do I need to apply two separate ranges, or can I accomplish this with one filter?
If you want to block everything but 10.103.xxx.xxx, use an include filter instead of the usual exclude filter.
NOTE ABOUT REGEXES MATCHING IPs IN ANALYTICS
I am not sure if the filter I suggested above uses regex or not (literal string match), but it doesn't make a difference because there's no way the expression 10.103. could be misinterpreted in an IP address.
Your original pattern, on the other hand, is bogus and is probably hurting you. That's because in a regex the dot . is not a literal dot, but represents any character. Your expression, in fact, excludes every single IP that merely starts with 10 (not just 10. that is ten-dot), including 100.xxx, 101.xxx etc.
The correct version of your original excluding regex would be 10\..*, which contains an escaped dot (\.), then proceeds to any characters after that (.*).
REGEXP are very good explained in the Google Analytics Help (here).
For multiple IPs, there is this little helper, which generates the REGEXP for you.
If you want to block internal traffic, just ADD NEW FILTER and CUSTOM then EXCLUDE and put the IP in REGEXP in the field, that's it.
I'm writing a regex for google analytics and I need to block any IP from 156.21.x.x I don't care about the last 2 octets just the first two. I would like to keep the regex to as few characters as possible as google only allows 255 chars and my regex is already pretty large.
not sure what flavor of regex or what lang your using, but this will work on most regex engines:
156\.21\.\d{1,3}\.\d{1,3}
Of course, this will match invalid ip's like 156.21.777.888, but if the list your parsing doesnt contain invalid ip addresses, then you should be ok. Or:
156\.21(\.\d{1,3}){2}
If you are running short on space, this would work, though you would match non-IP addresses as well. If you can assume Google will give you valid IP addresses, this is your shortest option:
^156\.21\.
Matches things like: 156.21.1.1 156.21.1000.1000 156.21.ABC
But does not match http://156.21.1.1 ehlo 156.21.1000.1000
The following regex would match (almost) valid IPv4 addresses that starts with 156.21:
(156\.21(?:\.[\d]{1,3}){2})