Packet Analysis

Packet Filtering information required

Hi, One of our PC which is running on REDHat is sending SMTP packets to the firewall. Though the firewall drops the packet, it logs the same. We wanted to know : 1. IF we have to run a packet capture tool, where do we run ? - on the firewall or the PC ? 2. We ran network monitoring tool, but did...

Inbound traffic is coming from router IP, not internet IP. Why?

Hello, thank you for your time. I have recently noticed a strange occurence going on with inbound traffic. The other day, I helped my friend set up his network. icmp ping was good. while sniffing, I first noticed inbound tcp traffic to me was not coming from my friend's IP address, but coming from...

How to extract the IP address of a data packet and store it in the database?

A client sends a data packet to the server machine, then how can the server extract the IP address of the data packet .Can you suggest a source code for this above query in JAVA? After extracting the IP address how can the IP address be stored in the database, where other IP addresses of other data...

Troubleshooting Internet connection

Hi, I've bought one laptop and I'm trying to connect it to the Internet via VIRGIN connection. It doesn't work for me and always shows "No page found" error, but the Internet works fine on my friend's laptop. I've seen the connection properties: it shows that packets sent are 626, packets received...