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[Noob] Firewall script problem - hmmm it doesn work... help

Discussion in 'HyperWRT Firmware' started by Bhaarth, Jul 23, 2005.

  1. Bhaarth

    Bhaarth Guest

    Hi all,

    Today I have flashed my WRT54G with HyperWRT. Main reason was that I want to setup better firewall than in normal firmware etc.

    I configured all GUI-stuff but I have great problems with firewall script. Because im linux noob I have started with something simple.

    /usr/sbin/iptables -P INPUT -j DROP
    /usr/sbin/iptables -P FORWARD -j DROP
    /usr/sbin/iptables -P OUTPUT -j ACCEPT
    /usr/sbin/iptables -A INPUT -s --dport 80 -j ACCEPT

    I wanted to block all incoming traffic. Last line should allow to acces GUI (or Im wrong;)

    After saving, rebooting itp Im not sure this is working. Duh, Im almost sure it doesnt. What am I making wrong?

    PS: can i use some "standard" firewall scripts etc from freshmeat? Will it work on my router?

    PPS: I want to block all traffic than unlock www/mail/ftp and in case of need unlock another ports (programs). But i dont know how to make it work.

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