iptables and samba

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hi
i m using the script below
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iptables -F
iptables -t nat -F
iptables -P INPUT DROP
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 8080 -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 22   -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 53   -j ACCEPT
iptables -A INPUT -i eth0 -p udp --dport 53   -j ACCEPT
iptables -A INPUT -i eth0 -p udp --dport 137  -j ACCEPT
iptables -A INPUT -i eth0 -p udp --dport 138  -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 139  -j ACCEPT

iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
#iptables -t nat -A PREROUTING -p udp --dport 80 -j REDIRECT --to-port 8080

iptables -P FORWARD DROP
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 21        -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 443       -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 5000      -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 5001      -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 5005      -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 5050      -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 6660:6670 -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 7000      -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 28805     -j ACCEPT
iptables -A FORWARD -i eth0 -p tcp --dport 51215     -j ACCEPT

iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
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i have two shares on samba server "Soft and linux" in these shares there are many folders. whenever i run the above script and then i open the share it takes atleast 4 minutes to open the share. but it doesnt take time while browsing inside share.
mean there is a folder on soft share like soft/adobe/acrobat/acrobat6
when i double click on soft it takes atleast 4 minutes but after that when i click on adobe then acrobat then acrobat6 it takes now time it just brose them normally. same problem is with the other share named linux.
but if i dont run this script then all shares work fine with no delay


i dont know what is the udp port 80 for but i just saw its traffic on my network in iptraf so i included it in my script

Regards
Azeem

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