인터넷 공유시(SQUID) 리다이렉트 문제입니다.

eth0 은 외부이고
eth1 은 내부입니다.

다른사이트 모두 문제가 없는데, 유독 한사이트만 문제가 있는데요.
웹 서버는 IIS 이고요.
다운로드를 할때 리다이렉트를 하는것 같은데 그것이 문제가 되는거 같구요.

클라이언트 창에는 다음과 같이 나옵니다.

ERROR
The requested URL could not be retrieved

--------------------------------------------------------------------------------

While trying to process the request: 

GET /nice/pds/download.asp?brdname=nice_pds3&file=20051229.txt HTTP/1.0
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
Referer: http://xxx.xxx.kr/nice/pds/list.asp?brdname=nice_pds3
Accept-Language: ko
Proxy-Connection: Keep-Alive
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Host: xxx.xxx.kr
Cookie: ASPSESSIONIDAQDQQDCS=JJAIODFCHCJBIBFABOFMEEEK; userid=nice

The following error was encountered: 

Invalid Response 
The HTTP Response message received from the contacted server could not be understood or was otherwise malformed. Please contact the site operator. Your cache administrator may be able to provide you with more details about the exact nature of the problem if needed. 

Your cache administrator is xxx@xxx.kr

설정은 아래와 같이 했습니다.
/sbin/iptables -t nat -A PREROUTING -p tcp -s 192.168.0.0/255.255.0.0 -i gre0 --dport 80 -j REDIRECT --to-port 3128

않되는 이유가 뭘까요? :oops: