Hi!
If an IP blocks ICMP (i.e. ping) is there a tool in MT I can use (not traceroute) to safely check if the IP responds?
Thanks!
Re: IP blocks ping
If that IP is assigned to an L2 interface and your Mikrotik has an interface in the same LAN segment, you can use ARP to see whether the device responds (:ping arp=yes interface=xyz)
If some process is running at that IP that responds on a TCP or UDP port, you can try to send a packet to that port and see whether you get any response (/tool sniffer shows you the response if it comes, /system telnet x.x.x.x port=yyyy can be used to send a TCP SYN packet, and resolve server=x.x.x.x port=yyyy can be used to send a UDP packet).
If some process is running at that IP that responds on a TCP or UDP port, you can try to send a packet to that port and see whether you get any response (/tool sniffer shows you the response if it comes, /system telnet x.x.x.x port=yyyy can be used to send a TCP SYN packet, and resolve server=x.x.x.x port=yyyy can be used to send a UDP packet).
Re: IP blocks ping
Hi Sindy. Unfortunately the IP is external and I need a way to measure the latency by a script. I'm trying to automate the process so that I don't need to be awake 24/7 :DIf that IP is assigned to an L2 interface and your Mikrotik has an interface in the same LAN segment, you can use ARP to see whether the device responds (:ping arp=yes interface=xyz)
If some process is running at that IP that responds on a TCP or UDP port, you can try to send a packet to that port and see whether you get any response (/tool sniffer shows you the response if it comes, /system telnet x.x.x.x port=yyyy can be used to send a TCP SYN packet, and resolve server=x.x.x.x port=yyyy can be used to send a UDP packet).
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