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[EBTABLES] Don't match tcp/udp source/destination port for IP fragments 

Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bart De Schuymer 2006-01-10 13:12:22 -08:00 committed by David S. Miller
parent 65e480ac55
commit 8a4c8a96a4
1 changed files with 3 additions and 0 deletions
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3
net/bridge/netfilter/ebt_ip.c
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@ -15,6 +15,7 @@
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_ip.h>
#include <linux/ip.h>
#include <net/ip.h>
#include <linux/in.h>
#include <linux/module.h>
@ -51,6 +52,8 @@ static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in,
if (!(info->bitmask & EBT_IP_DPORT) &&
!(info->bitmask & EBT_IP_SPORT))
return EBT_MATCH;
if (ntohs(ih->frag_off) & IP_OFFSET)
return EBT_NOMATCH;
pptr = skb_header_pointer(skb, ih->ihl*4,
sizeof(_ports), &_ports);
if (pptr == NULL)