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I have a Linux CentOS server online. At my console this message appeared:
possible possible SYN flooding on port 25. Sending cookies.
See SYN flood and SYN cookies.
I have done an Apache JMeter testing for 5000 users to check the response if 5000 user come to my website URL example.com.
Is it possible that this issue is due to this testing?
user3819471
Posted 2014-07-11T05:29:12.313
Reputation: 1
Welcome on superuser. Try to be more clean that you can. To edit your own post you can follow the edit link below your question or this link.
– Hastur – 2014-07-11T07:41:36.137HTTP (protocol of WWW) runs on port 80 by default. Port 25 is for SMTP (mail transfer). Can your web application send e-mails as a reaction to access? From where is the port 25 accessible? – pabouk – 2014-07-11T08:05:13.677