Iptables -A FORWARD -m state -state NEW,ESTABLISHED,RELATED -j ACCEPT Iptables -A INPUT -m state -state ESTABLISHED,RELATED -j ACCEPT #LOOPBACK ALLOW TRAFFIC ON THE LOOPBACK INTERFACE #-DENIAL OF SERVICE-Įcho 30 > /proc/sys/net/ipv4/tcp_fin _timeoutĮcho 1800 > /proc/sys/net/ipv4/tcp_kee palive_tim eĮcho 1 > /proc/sys/net/ipv4/tcp_win dow_scalin gĮcho 1280 > /proc/sys/net/ipv4/tcp_max _syn_backl og Iptables -A FORWARD -p tcp -syn -m limit -limit 1/s -j ACCEPT Iptables -A FORWARD -p icmp -icmp-type 8 -m limit -limit 3/second -j ACCEPT These have been the subject of a recent bugtraqĮcho 0 > /proc/sys/net/ipv4/tcp_tim estampsĮcho 1 > /proc/sys/net/ipv4/tcp_syn cookiesĮcho 0 >/proc/sys/net/ipv4/conf/a ll/accept_ redirectsĮcho 1 > /proc/sys/net/ipv4/icmp_ig nore_bogus _error_res ponsesĮcho "1" > /proc/sys/net/ipv4/ip_dyna ddrĮcho "32768 61000" >/proc/sys/net/ipv4/ip_loc al_port_ra nge #-BASIC SECURITY RESTRICTIONS-Įcho 2 > /proc/sys/net/ipv4/conf/al l/rp_filte rĮcho "1" > /proc/sys/net/ipv4/icmp_ec ho_ignore_ broadcastsĮcho 0 >/proc/sys/net/ipv4/conf/a ll/accept_ source_rou te I have also installed the poppassd-ceti-1.8.5-co4.i3 86.rpm, by logging in as root in the mailserver iam able to use the poppassd and change the passwords of the mail usersīut iam not able to telnet to the mailserver for the port 106, i get the error message unable to connect to the remote host :Connection refused.įollowng is the firewall of my linux mail server gz, but when user logs in to the webmail and click on the change password option and try to chage the password following error is the output : I have configured Linux ES v.04 as mail server Sendmail as a MTA and using DOVECOT IMAP, everthing is working fine with the email clinet software ( outlook express), installed squirrelmail for webmail this also is working fine wanted to add the password change plugin, i could able add the following plugin : change_pass-2.7-1.4.x.tar.
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