netstat - possible reasons for high IP count ??? Post: 302259334

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Special Forums IP Networking netstat - possible reasons for high IP count ??? Post 302259334 by PWSwebmaster on Monday 17th of November 2008 11:19:42 PM

11-18-2008

Registered User

netstat - possible reasons for high IP count ???

One of my servers started getting heavily loaded a few weeks ago for a few hours, so I did some studying and wrote a script to use netstat to get the IP addresses connected and the count. I put a new chain in iptables and if an IP is using more than 40 connections, it gets added to that chain which is then flushed every hour just to make sure no legitimate IP is blocked forever. If an IP is connected more than 100 times, it gets added directly to the INPUT chain and therefore is permanent until manually removed.

I'm mainly trying to figure out if those counts are good limits. Can there be legitimate reasons for an IP to be using more than 40 connections at a time? I tested going to a web page with 200 thumbnail images, and even then my IP was only listed a few times.

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ssl_ctx_add_extra_chain_cert

SSL_CTX_add_extra_chain_cert(3) 				      OpenSSL					   SSL_CTX_add_extra_chain_cert(3)

NAME

       SSL_CTX_add_extra_chain_cert - add certificate to chain

SYNOPSIS

	#include <openssl/ssl.h>

	long SSL_CTX_add_extra_chain_cert(SSL_CTX ctx, X509 *x509)

DESCRIPTION

       SSL_CTX_add_extra_chain_cert() adds the certificate x509 to the certificate chain presented together with the certificate. Several
       certificates can be added one after the other.

NOTES

       When constructing the certificate chain, the chain will be formed from these certificates explicitly specified. If no chain is specified,
       the library will try to complete the chain from the available CA certificates in the trusted CA storage, see
       SSL_CTX_load_verify_locations(3).

RETURN VALUES

       SSL_CTX_add_extra_chain_cert() returns 1 on success. Check out the error stack to find out the reason for failure otherwise.

SEE ALSO

       ssl(3), SSL_CTX_use_certificate(3), SSL_CTX_set_client_cert_cb(3), SSL_CTX_load_verify_locations(3)

50								    2013-03-05					   SSL_CTX_add_extra_chain_cert(3)