![]() We can take it a step further and confirm that the messages themselves are legitimate syslog records.īy looking at the Packet Information you can see that it does look like a legitimate syslog message. So it looks like syslog messages are correctly being sent. We've seen that there are packets flowing from the XG device to the Fastvue server on UDP Port 514. Reviewing Sophos XG Packet Capture Results With UDP, you know that a packet was sent but there is no way to know if it arrived without checking the destination. If we were looking for TCP traffic, we would expect to see those like we did in the TCP Port 80 example. Note: Since the traffic we are looking for is UDP, we do not expect any return or ACK messages. In this case 514 (the default Syslog port). Specify the desired Destination port number.Specify the Fastvue Server as the Destination IP address.In our case, we only want to see traffic where the Fastvue server is the destination, and we only want to see syslog traffic on Port 514. You can see both in and outbound request for the web browsing on port 80. From the image below you can see that a packet capture shows a lot more detail than a log entry would. We did this to only capture packets to and from that device. Previously we specified the IP address of the Fastvue server as a capture filter. Click the toggle switch to start the packet capture.Īfter a few second click Refresh to see if any results are shown. If a number of packets have been collected you can toggle the switch to stop the capture.įiltering the Sophos XG Packet Capture Results.For the BPF string, specify " host" followed by the IP address of your Fastvue Sophos Reporter server. Click Save.Wrap Capture Buffer Once Full allows refreshing the buffer with new information, purging the older information.Set the Number Of Bytes To Capture (Per Packet) to 1024.Click the Configure button to limit which packets to capture.Go to Monitor & Analyze | Diagnostics | Packet Capture.This is a handy troubleshooting step if you're not seeing any data flowing into Fastvue Sophos Reporter (for other troubleshooting steps, please see our support article). In this example, I will show you how to determine if Sophos XG is sending syslog messages to Fastvue Sophos Reporter. Let's have a look at how to enable Sophos XG packet capture. Unlike firewall logs that can be turned off or configured to exclude logging of some traffic, a packet capture literally shows you every packet that the firewall has to process. This is a great tool to determine what is actually happening "on the wire". Setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &broadcastON, sizeof broadcastON) Īddr.sin_addr.Sophos XG has the ability to capture and display actual network packet information right from the management web interface. In order to use broadcast the options of socket must change set SO_BROADCAST on a socket to true (1): (so we can transmit to 255 addr) My snippet of code is below, I am using VC++2010 bool CPTUProgramDlg::FindPTU(u_short port, const char * Destaddress) I can change the multicast address to 239.255.255.250 and the socket will bind but I need the address 255.255.255.255. Now, as I have said I can send a packet just find, but firstly I can't bind to the IP address 255.255.255.255 to receive the packets. I can see the device is working fine, wireshark can see the packets coming back and forth and the propriety software supplied with the device can discover the device just fine, the problem is with the C++ program so please keep on topic with your responses. I have a snippet of C++ code which can send a packet to 255.255.255.255 on port 4930 (both source and destination port), but it can't receive a packet back from the broadcast address 255.255.255.255. I have a device that is discovered by sending a broadcast packet to 255.255.255.255 on port 4930 and the device responds by sending a packet back to 255.255.255.255 on port 4930.
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