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Feature #5499

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PCAP-over-IP client

Added by Erik Hjelmvik 3 months ago.

Status:
New
Priority:
Normal
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Description

Implement a PCAP-over-IP client, so that packets can be read from a TCP socket as an alternative to reading a pcap file or sniffing an interface.

PCAP-over-IP can be used to live-stream captured packets from a remote sniffer to Suricata, but the most useful use-case is probably in order to read decrypted HTTPS traffic from a TLS proxy without having to replay it to a dummy network interface. There are several downsides of replaying packets to an interface, such as requiring root privs and risk of packet loss, so reading them from a TCP socket instead is preferable.

It would be nice if Suricata would support the same TCP socket interface syntax as Wireshark/tshark.
https://wiki.wireshark.org/CaptureSetup/Pipes.md#tcp-socket

suricata -i TCP@192.168.1.2:57012

Or if the TCP socket could be specified with -r:

suricata -r TCP@192.168.1.2:57012

Another option would be to add a custom option specifically for PCAP-over-IP:

suricata --pcapoveripconnect 192.168.1.2:57012

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