我遇到了一个问题，即 Squid 代理总是拒绝请求。糟糕的是，我从来没有看到过身份验证弹出窗口...
Squid 在 Ubuntu 14.04 vserver 上运行。
我将向您提供我的 squid.conf：
# acls
### local net
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 localnet src fc00::/7 # RFC 4193 local private network range
acl localnet src fe80::/10 # RFC 4291 link-local (directly plugged) machines
### safe ports
acl SSL_ports port 443
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 CONNECT method CONNECT
#set squid port
http_port 3128
hierarchy_stoplist cgi-bin ?
forwarded_for delete
# authentification with username and password
auth_param basic program /usr/lib/squid3/basic_ncsa_auth /etc/squid/squid_user
acl foo proxy_auth REQUIRED
http_access allow foo
## disable ident lookup
ident_lookup_access deny all
# last rule to block all without other valid rule
http_access deny all
最糟糕的是，过去几个月里，我已经在其他几个 vserver 实例上运行了完全相同的配置 - 但我不知道问题出在哪里……
以下是 netstat -l 的输出以及 /var/log/squid3/access.log 中的最后几个日志条目
网络状态-l
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 *:ssh *:* LISTEN
tcp6 0 0 [::]:3128 [::]:* LISTEN
tcp6 0 0 [::]:ssh [::]:* LISTEN
udp 0 0 Ubuntu-1404-trusty-:ntp *:*
udp 0 0 localhost.localdoma:ntp *:*
udp 0 0 *:ntp *:*
udp 0 0 *:45391 *:*
udp6 0 0 Ubuntu-1404-trusty-:ntp [::]:*
udp6 0 0 fe80::21c:14ff:fe01:ntp [::]:*
udp6 0 0 ip6-localhost:ntp [::]:*
udp6 0 0 [::]:ntp [::]:*
udp6 0 0 [::]:46534 [::]:*
raw 0 0 *:icmp *:* 7
raw6 0 0 [::]:ipv6-icmp [::]:* 7
Active UNIX domain sockets (only servers)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 9030 /var/run/acpid.socket
unix 2 [ ACC ] STREAM LISTENING 7254 @/com/ubuntu/upstart
unix 2 [ ACC ] STREAM LISTENING 7803 /var/run/dbus/system_bus_socket
unix 2 [ ACC ] SEQPACKET LISTENING 7624 /run/udev/control
最后几条记录/var/log/squid3/access.log
1407774496.214 0 188.40.117.68 TCP_DENIED/403 4167 GET http://www.google.de/ - HIER_NONE/- text/html
1407774496.346 0 188.40.117.68 TCP_DENIED/403 3963 GET http://www.squid-cache.org/Artwork/SN.png - HIER_NONE/- text/html
1407774496.398 0 188.40.117.68 TCP_DENIED/403 4200 GET http://www.google.de/favicon.ico - HIER_NONE/- text/html
1407774496.419 0 188.40.117.68 TCP_DENIED/403 4200 GET http://www.google.de/favicon.ico - HIER_NONE/- text/html
1407774498.431 0 188.40.117.68 TCP_DENIED/403 4203 GET http://www.google.de/ - HIER_NONE/- text/html
感谢您的时间 - 我非常感谢您的帮助。如果您需要更多信息，请告诉我们，我会尽力提供。
答案1
我解决了。至少有点……这似乎是创建用户的问题。将用户名改为全小写后，它开始正常工作了。