IT Answers » Natting http://itknowledgeexchange.techtarget.com/itanswers Tue, 21 May 2013 13:51:31 +0000 en-US hourly 1 Is there a way to trace real ip address from linux/apache web server? http://itknowledgeexchange.techtarget.com/itanswers/is-there-a-way-to-trace-real-ip-address-from-linuxapache-web-server/ http://itknowledgeexchange.techtarget.com/itanswers/is-there-a-way-to-trace-real-ip-address-from-linuxapache-web-server/#comments Thu, 19 Jan 2012 01:30:39 +0000 Whimsical11 I’m having a serious problem with some evil entity submitting fraudulent credit card transactions through my web site.  They apparently have a database of credit card numbers, along with the 3-4 digit CVS, and have sent 9,000 transactions through my web site (same name, address, all for $25.00).  Some of these tx have gone through, most have failed.  When I notice this behavior, I block the ip of the sender.  They then come at me from a different ip.  I believe they have modified their ip (NATting, or ip masquerading?). 

This has cost me around $6,000 in the past two months and may bring my web business down entirely.  I need to find this person.  Any ideas on how to track them down?  I am not a networking expert, but am a programmer and can figured out whatever needs to be done.
Thanks so much in advance!
]]> http://itknowledgeexchange.techtarget.com/itanswers/is-there-a-way-to-trace-real-ip-address-from-linuxapache-web-server/feed/ 4 How can I accomplish load balancing with redundancy? http://itknowledgeexchange.techtarget.com/itanswers/how-can-i-accomplish-load-balancing-with-redundancy/ http://itknowledgeexchange.techtarget.com/itanswers/how-can-i-accomplish-load-balancing-with-redundancy/#comments Wed, 12 Mar 2008 18:53:36 +0000 NetworkingATE I have two links with different ISP’s and both the (512Kbps) links are terminated on separate Cisco routers (2811). Currently, we are using one link. Another link is new. I want to do load sharing and redundancy between them. Right now I am not using BGP (routers are configured in simple manner). My client and I are concerned with cost.

My present network scenario looks like this:
Internet Ri (ISP 1) — Layer 3 switch (working here as a simple switch) — Firewall 1 (Cisco ASA5510) — Firewall 2 (Cisco ASA5510) — LAN.

On Firewall 1, remote and site-to-site VPN is configured — one DMZ. My LAN is in the 172.16.1.xx series; my DMZ is in 172.16.4.10, and after 172.16.1.30 is used for the desktop, 192.168.x.x is the management IP.

Right now I have one other Internet link (512kbps) from a different ISP. So please tell me how I can accomplish load balancing with redundancy.

I’ve tried OER but unsuccessfully, due to IOS image (c2800nm-ipbasek9-mz.124-11.T.bin) and ISP’s AS. Can it be possible through natting, and ACL? Please help me with the OER or anything I’ve mentioned. If possible, please show me a sample configuration.

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