[CentOS] Show IP Traffic on a port
I am trying to determine the root of an issue I am having. How can I watch traffic destined to a specific port on my CentOS 5.1 box to see if its even hitting it? It would be udp traffic. Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Show IP Traffic on a port
Joseph L. Casale wrote: I am trying to determine the root of an issue I am having. How can I watch traffic destined to a specific port on my CentOS 5.1 box to see if its even hitting it? It would be udp traffic. Thanks! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos If you're using IPTABLES on your CentOS box, then you can watch the traffic hit your rules using watch -d iptables -nvL. The -d will highlight changes (so you can spot them) and you should see the number of packets change as each packet is processed by your rules. If you have a specific chain name that deals with your port, then add that after the -nvL in the command - e.g. watch -d iptables -nvL myChain Ian smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Show IP Traffic on a port
Joseph L. Casale wrote: I am trying to determine the root of an issue I am having. How can I watch traffic destined to a specific port on my CentOS 5.1 box to see if its even hitting it? It would be udp traffic. # yum install wireshark # tshark udp port 1234 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Show IP Traffic on a port
On Tuesday 20 May 2008 8:57:08 Joseph L. Casale wrote: I am trying to determine the root of an issue I am having. How can I watch traffic destined to a specific port on my CentOS 5.1 box to see if its even hitting it? It would be udp traffic. Thanks! jlc Try tcpdump -i interface udp port port. -Chris ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
RE: [CentOS] Show IP Traffic on a port
Try tcpdump -i interface udp port port. -Chris That's so going in my toolbox :) This confirmed what I needed to know! Thanks everyone! jlc ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
