I have a span feed coming in on an un-addressed interface of a linux (centos) box. eth4. The span contains several vlans. I have an application which can grab packets from an interface ...
Can I decide the direction of package with ebtables? See the diagram above, when raw package come, I want to the package goto FORWARD table rather than INPUT table with ebtables, directly. The ...
Under CentOS, how can I filter traffic by protocol rather than by port? For example, I would like to filter ftp traffic regardless of the port being used in order to prevent users on the network from ...
I am trying to create IP-MAC pairing rules in ebtables. There are few tutorials and related questions  available but I have kind of specific setting. ENVIRONMENT: I have many physical hosts. Each ...
I help a local private school with a lot of their tech needs. So far, it's been on the order of repairing/installing office computers and helping manage the office network. But now the administrator ...
I would just like some heads up on this as I really don't understand -why- this is the case. Further down is the TCPDUMP output (tcpdump -s0 -XXnni eth0 tcp port 80) of the 'HTTP' response a ...
I'm customer of an Irish ISP, eircom, which has started censoring the pirate bay. When I try to ping 22.214.171.124 which is the IP address of thepiratebay.com, I get this output: PING 126.96.36.199 ...