Change IP address dynamically?

Question

Consider the case, I want to crawl websites frequently, but my IP address got blocked after some day/limit.

So, how can change my IP address dynamically or any other id

Answer 1

If you have public IPs. Add them on your interface and if you are using Linux use Iptables for switching those public IPs.

Iptables sample rules for two IPs

iptables -t nat -A POSTROUTING -m statistic --mode random --probability 0.5 -j SNAT --to-source 192.168.0.2

iptables -t nat -A POSTROUTING -m statistic --mode random --probability 0.5 -j SNAT --to-source 192.168.0.3

If you have 4 IPs then probablity will become 0.25.

You can also create your own proxy with simple steps.

These rules will allow the proxy server to switch its outgoing IPS.