How to check icmp timestamp response Open Windows Firewall. Jun 4, 2024 · In Windows, if you want to disable ICMP Timestamp Reply without relying on Windows Firewall, you can do so by modifying the registry. The ICMP timestamp response from Fortigate contains device's date and time. Rapid7 is reporting the same thing to me but I have not taken action yet. Now I had a theory. ICMP Timestamp Request message Type is 13 and ICMP Timestamp Reply message Type is 14. In the Windows Firewall box, select “Change Nov 30, 2021 · The Ping command does not use the ICMP/ICMPv6 header sequence number field (icmp_seq or icmp6_seq) to correlate requests with ICMP/ICMPv6 Echo Replies. File Name: icmp_timestamp. b. a. Network Time Protocol (NTP) is the standard protocol used for time synchronization. One such overlooked feature is the Internet Control Message Protocol (ICMP) timestamp response, which can be a significant source of vulnerabilities if left enabled. The below images demonstrate the Nmap ICMP Timestamp sent to FortiGate's Interface and found 1 host up. To fix the “ICMP Timestamp Request Remote Date Disclosure” vulnerability, we need to block the requests from an attacker. You may try the following steps to check if the ICMP timestamp is disabled or not. Click the Advanced tab. Nov 13, 2024 · By default, FortiGate will respond to the ICMP Timestamp reply if the ICMP Timestamp is received. iptables -A INPUT -p icmp --icmp-type timestamp-request -j DROP iptables -A OUTPUT -p icmp --icmp-type timestamp-reply -j DROP. Select all Open in new window. How to Fix. Of course there is a chance that the timestamp could be 0 but certainly not for two consecutive replies. e. Originate is the time that your local machine crafts the request packet Receive is the time that the remote machine receives the packet Transmit is the time that the remote machine crafts the response packet Sep 23, 2019 · How to filter out ICMP Timestamp requests in NASL? Filter out the ICMP timestamp requests (13), and the outgoing ICMP timestamp replies (14). nasl Version: 1. These responses include the current time in milliseconds, allowing an attacker to infer information about the system’s uptime and potentially synchronize attacks across multiple systems. May 19, 2018 · The timestamp is 32 bits of milliseconds since midnight UT. Jul 12, 2024 · Using nping, use the following command: “nping –icmp –icmp-type timestamp-request <target_ip>” If you receive timestamp replies, your device is vulnerable to ICMP Timestamp Request Remote Date Disclosure. This information could be used as a vulnerability with high visibility. Here are the steps to disable ICMP Timestamp Reply: Dec 1, 2016 · Timestamp is the number of milliseconds since midnight, universal time. Importance of Fixing ICMP Timestamp Anyway, the response to my hping included: TCP timestamp: tcpts=0. c. a ping or something). Aug 27, 2021 · Same here. How do I confirm that the timestamp response have been turned off? May 27, 2020 · Iptables rule to disable ICMP timestamp responses in Linux. protocol of the rule or of the packet to check i. Name Timestamp Request and Timestamp Reply Synopsis The ICMP Timestamp Request and Timestamp Reply query messages provide the ability to determine the length of time that ICMP query messages spend … - Selection from Internet Core Protocols: The Definitive Guide [Book] Feb 21, 2025 · In the realm of cybersecurity, it’s not just about keeping an eye on incoming traffic – we must also ensure that our network infrastructure is secure from potential threats. icmp here --icmp-type provide the icmp type for Aug 1, 2015 · How can I submit a ICMP request for timestamp and netmask request to a host without using NMAP? Is it possible to generate a terminal / command line request with a tool like hping3 or any native Linux / Windows tool? May 16, 2022 · Short question: Is there a simple 1-line command in CMD, executed locally by a user on the host, which tells whether ICMP is allowed or blocked? Background: Some computers in the network are reachable by RDP (Remote Desktop Protocol) but not by a ping-request (response is Request timed out). In the ICMP Settings dialog box, you may check if the ICMP timestamp is disabled or not. If you do Dec 10, 2014 · We had a penetration test done on our servers and one of the vulnerabilities they suggested we fix is that the host responded to an ICMP timestamp request with TCP timestamp. To block ICMP timestamp request on wan1 interface IP, follow the below steps: config system interface. ICMP Timestamp Request and Timestamp Reply messages are not used much these days, because there an entire protocol itself is dedicated for network device time synchronization. The suggestion I’m seeing from the Rapid7 scan results is to address the problem on our hardware firewall not the clients themselves. Instead, it uses the ICMP/ICMPv6 header identifier field (icmp_id or icmp6_id) plus an 8-byte TOD time stamp field to correlate requests with replies. Select “Windows Firewall”. Please reply if the information provided is not help so that we can help you better. The FortiGate built-in sniffer packet results show the ICMP Timestamp request packet comes in and FortiGate returns the ICMP Timestamp reply. I've looked around but can't figure out how to disable it on our webserver or how to issue a command to check for this vulnerability (i. d. This is most likely due to ICMP being blocked. 48 ; How to send ICMP request to those ICMP types? Go to the Windows Control Panel. The Originate Timestamp is the time the sender last touched the message before sending it, the Receive Timestamp is the time the echoer first touched it on receipt, and the Transmit Timestamp is the time the echoer last touched the message on sending it. Please note that you must back up the registry before modifying it to prevent improper operation from causing system problems. In ICMP, click Settings. Jun 25, 2014 · I tried the following recently in an attempt to disable the TCP timestamp responses, but I'm not sure if it worked. The server was responding with a TCP timestamp value, which made Nessus report it, but Nmap didn’t report the uptime because the value was 0. What […] The ICMP timestamp response vulnerability arises when a network device or host responds to ICMP Timestamp Requests. Jan 25, 2022 · This article describes Block ICMP timestamp on Fortigate interface while keeping ping enabled. mdgbdy vmllcbhn pjlzrdw znuzr nftnu szzt hlrdqh lznd otiim nhia