sip_server | 2025-03-01T110449.852Z INFO sip sip/inbound.go:714 Closing inbound call{"nodeID": "NE_vih6eviopxQD", "callID": "SCL_deu9DixMQv44", "fromIP": "80.94.93.229", "toIP": "52.54.47.212:5060", "fromHost": "1.1.1.1", "fromUser": "100", "toHost": "1.1.1.1", "toUser": "100", "sipTag": "3334333632666434313363340134313930313338353734", "sipCallID": "1149598860292446243639301", "reason": "flood"} sip_server | 2025/03/01 120800 ERROR failed to parse caller=transport<UDP> err=EOF data="OPTIONS sip:nm SIP/2.0\\r\\nVia: SIP/2.0/UDP nm;branch=foo;rport\\r\\nFrom: sip:nm@nm;tag=root\\r\\nTo: sip:nm2@nm2\\r\\nCall-ID: 50000\\r\\nCSeq: 42 OPTIONS\\r\\nMax-Forwards: 70\\r\\nContent-Length: 0\\r\\nContact: sip:nm@nm\\r\\nAccept: application/sdp\\r\\n\\r\\n" sip_server | 2025-03-01T123014.877Z INFO sip sip/inbound.go:173 processing invite "nodeID": "NE_vih6eviopxQD", "callID": "SCL_xyyNV8sGrnQb", "fromIP": "147.189.138.26", "toIP": "52.54.47.212:5060", "fromHost": "52.54.47.212", "fromUser": "trunk1", "toHost": "52.54.47.212", "toUser": "00116823074942", "sipTag": "d21a8083", "sipCallID": "e58482d2e17be1272e4fdd06479cb01c"} @millions-hair-24956 how to prevent this flood ?

To prevent SIP flood attacks, you can implement several strategies: 1. Rate Limiting: Implement rate limiting on your SIP server to restrict the number of requests from a single IP address within a certain timeframe. This can help mitigate flood attacks by limiting the impact of excessive requests from a single source. 2. IP Whitelisting/Blacklisting: Use IP whitelisting to allow only trusted IP addresses to connect to your SIP server. Conversely, blacklist known malicious IP addresses to prevent them from accessing your server. 3. SIP Authentication: Ensure that all SIP requests are authenticated. This can prevent unauthorized users from sending requests to your server. 4. Firewall Rules: Configure your firewall to block suspicious traffic patterns, such as a high number of requests from a single IP address or requests that do not conform to expected SIP behavior. 5. Monitoring and Alerts: Set up monitoring and alerting for unusual traffic patterns or spikes in SIP requests. This can help you quickly identify and respond to potential flood attacks. 6. SIP Flood Detection Tools: Use specialized tools or software that can detect and mitigate SIP flood attacks. These tools can analyze traffic patterns and automatically block or throttle suspicious activity. Would you like more detailed information on any of these strategies? Sources: - SIP inbound trunk 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

this is livekit sip server , not others . i am usıng thıs for ountbound calls @millions-hair-24956

It seems likely that for LiveKit's SIP server, you can still apply similar strategies to prevent flood attacks, even when using it for outbound calls. Here are some specific steps you might consider: 1. Configure Dispatch Rules: Ensure that your dispatch rules are correctly set up to handle only expected traffic. This can help in filtering out unwanted or unexpected SIP requests. 2. Use SIP Trunk Authentication: As per LiveKit's SIP documentation, ensure that your SIP trunks are configured with proper authentication. This can prevent unauthorized access and reduce the risk of flood attacks. 3. Monitor SIP Traffic: Utilize LiveKit's logging and monitoring capabilities to keep an eye on SIP traffic patterns. Look for unusual spikes or patterns that might indicate a flood attack. 4. Implement IP Filtering: If possible, configure your LiveKit SIP server to accept requests only from known IP addresses, especially if you have a fixed set of SIP providers or endpoints. 5. Rate Limiting and Throttling: Although not explicitly mentioned in the provided data sources, implementing rate limiting at the network level (e.g., using a firewall or load balancer) can help mitigate flood attacks. Would you like more detailed guidance on any of these steps? Sources: - LiveKit's SIP documentation 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.