ICMP - call for packets ?
One of our readers is reporting a fairly recent increase in ICMP packets hitting his firewall. If you're seeing the same we'd like some data:
- on the importance and timeframe of the increase;
- the type of ICMP packets you're receiving;
- some idea of how it correlates (sweeping your address range, just hitting one IP, coming from all over, coming from specific hosts, ...);
- if possible a small sample of some out of the ordinary packet captures.
--
Swa Frantzen -- Section 66
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