Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

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XG Firewall is impersonating the whole subnet for port 25

John Felix Rodrin

Good day,

Currently we are doing network discovery, and we found that the whole subnet are answering to the ping discovery which is weird. Upon checking, the ip addresses that are not assigned are replying via port tcp 25. When we telnet it the "220 sophos esmtp ready" was reflected. Is this normal behavior?



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  • 0 in reply to Vivek Jagad

    Good day ,

    Thanks for your immediate response. As it is a normal behavior, is this due to a feature or something? If you can share me a document or short explanation why is sophos capable of doing this as I need to discuss this with my boss. Unfortunately, there was no proper transition from the previous network administrator as such i'm currently studying the environment at my work. Thank you once again

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