what is the host and destination IP address here? is it any internet based URL/IP?only destination-ip-address has to be replaced with internet address.
e.g.
tcpdump -nni 0.0:nnn -s0 -w /var/tmp/output.pcap host 1.1.1.1
the i rule associated here with the virtual server is for incoming traffic from the client,...right? .......Not for the outbound traffic for Inet..initiated from the server..right?not really. virtual server can use for either incoming traffic from client or outbound traffic from server.
The server has upstream router as its default GWY.. this being the case ...please clarify....so, doesn't outbound traffic which is initiated from serevr pass through bigip?
if the server were to initiate traffic for say, www.yahoo.com, its source address would be NATd/changed by bigip, as per the iRule..and then the packet would travel to outbound with a public src-ip from the snatpool smtpsnat...?yes if that traffic passes through bigip.
pool reversenpath_20 ---> has member as upstream router IP. Which means, if bigip is seeing incoming traffic, is it load balancing to upstream router? if so, why would it do so?isn't the virtual server for outbound traffic from server?
snatpool smtpsnat --> snat is used only to change the src-ip of inbound client traffic.not really. snat is able to translate source address for outbound traffic too.