From owner-freebsd-hackers  Tue Dec 18 23:25:49 2001
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Date: Wed, 19 Dec 2001 09:25:02 +0200
From: shupilov <shupilov@tb.by>
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Subject: Re[2]: NATD libalias bug or feature?
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To: Ruslan Ermilov <ru@FreeBSD.ORG>
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Hello everybody,

Tuesday, December 18, 2001, 6:17:30 PM, you wrote:

RE> On Tue, Dec 18, 2001 at 05:33:34PM +0300, aka50 wrote:
>> Hello freebsd-hackers,
>> 
>>       FreeBSD 4.3 RELEASE.
>> 
>>       I tried to use natd transparent proxing ability with encode_ip_hdr
>>       type. I found strange behaviour in function TcpAliasOut()
>>       (/usr/src/lib/libalias/alias.c). When packet modified by
>>       ProxyModify() (/usr/src/lib/libalias/alias_proxy.c), code
>>       doesn't recompute pointer to TCP header by calling
>>       tc = (struct tcphdr *) ((char *) pip + (pip->ip_hl << 2));
RE> [...]

RE> Committed, thanks!

I'm using FreeBSD 4.2 REL as a natd transparent proxy. I looked
through the /usr/src/lib/libalias/alias.c and of course I ain't got
than string
tc = (struct tcphdr *) ((char *) pip + (pip->ip_hl << 2));
in the source code. Should I correct that one or it is not necessary?


-- 
Best regards,
 shupilov                            mailto:shupilov@tb.by



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