Training courses
Kernel and Embedded Linux
Bootlin training courses
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in tcp 127.0.0.1,1 127.0.0.1,ftp in tcp 1.1.1.1,1 1.2.1.1,ftp in udp 127.0.0.1,1 127.0.0.1,21 in udp 1.1.1.1,1 1.2.1.1,21 in icmp 127.0.0.1 127.0.0.1 in icmp 1.1.1.1 1.2.1.1