Timeline for Firewall Can Ping Google DNS, VM behind Firewall cannot, all rules allowed
Current License: CC BY-SA 4.0
8 events
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| Mar 5, 2021 at 15:10 | comment | added | JW0914 |
@HuudRych A general FYI: markdown formatting makes a huge difference in the ease of readability of long[er] questions/answers, especially bulleted/numerical lists as they tie together points applicable to the sentence/paragraph above them. Weblink markdown is recommended since it's more efficient, both on the reader and in regards to space _(pictures can also be inlined, either via the Media attach button or by using weblink markdown placing an ! in front of the link's [
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| Mar 5, 2021 at 10:44 | history | edited | Huud Rych | CC BY-SA 4.0 |
edited title
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| Mar 5, 2021 at 7:41 | history | migrated | from security.stackexchange.com (revisions) | ||
| Mar 5, 2021 at 6:08 | comment | added | Huud Rych | ecisse - I would doubt that as I can ping and receive replies from 192.168.28.40 Server. brynk - I'm not sure about that as Firewall B receives replies from 8.8.8.8 through FirewallA, and traffic from Windows-VM is also going through the same route as Firewall B | |
| Mar 4, 2021 at 23:28 | comment | added | brynk |
If this were the case, I would expect the firewallX tcpdump logs (in the first section) to show the ICMP packets returning from 8.8.8.8 (as they do when ping is issued from FirewallB) .. (I also checked whether tcpdump .. host and host .. syntax might have been inadvertantly excluding return packets- it's not). I wonder if the configuration of Firewall A is refusing to accept return packets destined for the internal VM subnet?
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| Mar 4, 2021 at 23:14 | comment | added | multithr3at3d | Welcome! I don't see a security question here; voting to move. | |
| Mar 4, 2021 at 22:50 | comment | added | ecisse | I had a similar issue some time ago. The firewall of the Windows-VM could be blocking the echo-replies. | |
| Mar 4, 2021 at 22:35 | history | asked | Huud Rych | CC BY-SA 4.0 |