squid proxy - howto allow tcp connect - 使用ERR_INVALID_DOMAIN获取TCP_DENIAL/400

Question

我有一个设备需要连接到tcp:80上的互联网服务,但网络没有直接的互联网访问.所以我使用squid代理来解决这个问题.

该设备允许我输入代理服务器,端口,用户名和密码.

我想,该设备使用http CONNECT而不是http GET(这对我的浏览器工作正常).

当设备尝试连接时,它会收到一个http错误400. squid access.log只给出了这个:

1338885433.033      0 172.22.140.129 TCP_DENIED/400 1728 CONNECT :0 - NONE/- text/html

所以我抓住了数据包,真正看到了最新情况:

来自设备的请求:

CONNECT mydomain.com:0 HTTP/1.0
User-agent: Sequencer/5.5.0.5539

从鱿鱼回答:

HTTP/1.0 400 Bad Request
squid/2.7.STABLE9
X-Squid-Error: ERR_INVALID_URL 0
close

我的squid.conf:

auth_param basic program /usr/lib/squid/pam_auth
auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
auth_param basic casesensitive off

acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32

acl localnet src 10.0.0.0/8     # RFC1918 possible internal network
acl localnet src 172.16.0.0/12  # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network

acl SSL_ports port 443          # https
acl SSL_ports port 563          # snews
acl SSL_ports port 873          # rsync

acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http
acl Safe_ports port 631         # cups
acl Safe_ports port 873         # rsync
acl Safe_ports port 901         # SWAT

acl purge method PURGE
acl CONNECT method CONNECT
acl checkpw proxy_auth REQUIRED

http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access allow CONNECT
http_access allow localnet
http_access allow localhost
http_access allow checkpw all
http_access deny all

icp_access allow localnet
icp_access deny all

http_port 3128

hierarchy_stoplist cgi-bin ?

access_log /var/log/squid/access.log squid

debug_options ALL,1 33,2 28,9

refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern (Release|Packages(.gz)*)$       0       20%     2880
refresh_pattern .               0       20%     4320

acl shoutcast rep_header X-HTTP09-First-Line ^ICY.[0-9]

upgrade_http0.9 deny shoutcast

acl apache rep_header Server ^Apache

broken_vary_encoding allow apache

extension_methods REPORT MERGE MKACTIVITY CHECKOUT

hosts_file /etc/hosts

forwarded_for off

coredump_dir /var/spool/squid

有没有解决方案摆脱ERR_INVALID_URL？我是否错过了解squid代理的概念或来自设备的请求无效？

如果需要任何其他信息,请告诉我.

先谢谢你,克里斯蒂安.

Answer 1

我通过从默认的squid.conf中注释出来解决了同样的错误:

# Deny CONNECT to other than secure SSL ports
#http_access deny CONNECT !SSL_ports

默认情况下,Squid设置为不允许CONNECT到非SSL端口.如果您想在没有SSL的情况下进行测试,可以通过注释掉上面的行来禁用它.

Answer 2

我已经通过设备的产品支持解决了这个问题。

他们向我展示了一种启用代理连接过程的更详细调试视图的方法。

日志文件中有一行“无法连接到中继 0.0.0.0”

于是我检查了设备的 dns 服务器设置，发现有一个拼写错误。就是这样。