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Which firewall evasion technique is one in which you can adjust the byte packets size to evade firewalls?
Timing technique
Sending bad checksums
Fragmented packets
Specifying an MTU
The correct response is specifying an maximum transmission unit (MTU). You can specify your own offset size with the --mtu option. Do not use -f and --mtu together. The offset must be a multiple of eight. While fragmented packets won't get by packet filters and firewalls that queue all IP fragments, such as the CONFIGIPALWAYS_DEFRAG option in the Linux kernel, some networks can't afford the performance hit this causes and thus leave it disabled. Others can't enable this because fragments may take different routes into their networks. https://nmap.org/book/man-bypass-firewalls-ids.html
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