Squid problem! I 've been working on it for several days, so I come up and ask the brothers.

Squid problem! I 've been working on it for several days, so I 'd like to come up and ask my brother-Linux Enterprise Application-Linux server application information. Here is the details. Dear friends, I encountered some problems when configuring SQUID. Please give me some advice. My configuration file is as follows:
# Vi/etc/squid. conf
Http_port 172.16.126.4: 3128
Cache_mem 256 MB
Cache_dir ufs/var/spool/squid 4096 16 256
Cache_inclutive_user squid
Cache_paitive_group squid
Dns_nameservers 172.16.2.1
Cache_access_log/var/log/squid/access. log
Cache_store_log/var/log/squid/store. log
Visible_hostname 172.16.126.4
Cache_mgr wluck@sohu.com
Acl all src 0.0.0.0/0.0.0.0
Http_access allow all

# NCSA Authentication
Auth_param basic program/usr/lib/squid/ncsa_auth/etc/squid/passwd
Auth_param basic children 5
Auth_param basic credentialsttl 2 hours
Auth_param basic realm input ncsa auth infor
Acl auth_user proxy_auth REQUIRED
Http_access allow auth_user proxy_auth

# Vi/etc/squid/passwd
Pcboy:/qCJl22VPARX2


# Service squid reload
2009/03/05 10:15:27 | WARNING: '0. 0.0.0/0.0.0.0 'is a subnetwork of '0. 0.0.0/0.0.0.0'
2009/03/05 10:15:27 | WARNING: because of this '0. 0.0.0/0.0.0.0 'is ignored to keep splay tree searching predictable
2009/03/05 10:15:27 | WARNING: You shocould probably remove '0. 0.0.0/0.0.0.0 'from the ACL named 'all'
2009/03/05 10:15:27 | aclParseAccessLine: ACL name 'proxy _ auth' not found.
FATAL: Bungled squid. conf line 20: http_access allow auth_user proxy_auth
Squid Cache (Version 3.0.STABLE2): Terminated abnormally.
CPU Usage: 0.007 seconds = 0.005 user + 0.002 sys
Maximum Resident Size: 0 KB
Page faults with physical I/o: 0

Try to use the proxy server on a windows machine, but the connection fails and the server cannot be found. How can this problem be solved?