Ensure tcp_pmtu_discover is disabled

SedangLevel 1Otomatisaix

Deskripsi

The tcp_pmtu_discover parameter controls whether TCP MTU discovery is enabled. The tcp_pmtu_discover parameter will be set to 0. The idea of MTU discovery is to avoid packet fragmentation between remote networks. Audit: `no -o tcp_pmtu_discover` must report 0.

Cara pemeriksaan

Metode audit: Perintah shell

shell

command -v no >/dev/null 2>&1 || exit 1; out=$(no -o tcp_pmtu_discover 2>/dev/null) || exit 1; printf '%s\n' "$out" | sed 's/[[:blank:]]*=[[:blank:]]*/=/'

Output yang diharapkan: tcp_pmtu_discover=0

Cara perbaikan

Metode perbaikan: Panduan atau patch infrastruktur

no -p -o tcp_pmtu_discover=0 (sets the running value and makes it persistent in /etc/tunables/nextboot)

Properti

Sistem operasi: Apa saja
Tag: aixhardening
Referensi: CIS IBM AIX 7 Benchmark v1.2.0 - 4.5.16 Ensure tcp_pmtu_discover is disabled

Periksa host ini

Jalankan ini pada mesin yang diizinkan untuk Anda audit. Pemindaian bersifat hanya baca.

shell

tmaegis scan --target aix