我的iptables是不是有问题？无法打开tcp 2401

neosnake

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[root@dbserver root]# iptables -A INPUT -p -tcp --syn --destination-port 2401 -j ACCEPT
iptables v1.2.4: unknown protocol `-tcp' specified
Try `iptables -h' or 'iptables --help' for more information.
[root@dbserver root]# iptables -A INPUT -p tcp --syn --destination-port 2401 -j ACCEPT
/lib/modules/2.4.9-e.3/kernel/net/ipv4/netfilter/ip_tables.o: init_module: Device or resource busy
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters
/lib/modules/2.4.9-e.3/kernel/net/ipv4/netfilter/ip_tables.o: insmod /lib/modules/2.4.9-e.3/kernel/net/ipv4/netfilter/ip_tables.o failed
/lib/modules/2.4.9-e.3/kernel/net/ipv4/netfilter/ip_tables.o: insmod ip_tables failed
iptables v1.2.4: can't initialize iptables table `filter': iptables who? (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
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我用命令iptables -A INPUT -p tcp --syn --destination-port 2401 -j ACCEPT 就出现这个提示，难道我的iptables或者kernel需要升级？着急牙！！我打不开2401端口就不能运行cvs服务，老板要杀人了啊～～～

ives518

我用命令iptables -A INPUT -p tcp  --destination-port 2401 -j ACCEPT
不要 -syn
这样会阻止tcp建立连接的