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Debian GNU/Linux Reference Guide
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3.7.5 Strani problemi di accesso con alcuni siti web

I kernel Linux recenti attivano l'ECN di default, cosa che pu� causare problemi di accesso ad alcuni siti web con dei cattivi routers. Per controllare lo stato dell'ECN:

     # cat /proc/sys/net/ipv4/tcp_ecn
      ... oppure
     # sysctl net.ipv4.tcp_ecn

Per disattivarlo usate:

     # echo "0" > /proc/sys/net/ipv4/tcp_ecn
      ... oppure
     # sysctl -w net.ipv4.tcp_ecn=0

Per disabilitare TCP ECN ad ogni boot, aprite /etc/sysctl.conf ed aggiungete:

     net.ipv4.tcp_ecn = 0

Debian GNU/Linux Reference Guide
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