Questions[squid](ubuntu)

I've just installed Squid 3.5.27 on Ubuntu Server 18.04

user@ubuntu:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04 LTS
Release:        18.04
Codename:       bionic
user@ubuntu:~$ 


user@ubuntu:~$ dpkg -l | grep squid
ii  squid                                 3.5.27-1ubuntu1                    amd64        Full featured Web Proxy cache (HTTP proxy)
ii  squid-common                          3.5.27-1ubuntu1                    all          Full featured Web Proxy cache (HTTP proxy) - common files
ii  squid-langpack                        20170901-1                         all          Localized error pages for Squid
user@ubuntu:~$ 


user@ubuntu:~$ squid -v
Squid Cache: Version 3.5.27
Service Name: squid
Ubuntu linux
configure options:  '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--libexecdir=${prefix}/lib/squid3' '--srcdir=.' '--disable-maintainer-mode' '--disable-dependency-tracking' '--disable-silent-rules' 'BUILDCXXFLAGS=-g -O2 -fdebug-prefix-map=/build/squid3-28YJxG/squid3-3.5.27=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-error=deprecated -Wno-error=format-truncation -Wdate-time -D_FORTIFY_SOURCE=2 -Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed' '--datadir=/usr/share/squid' '--sysconfdir=/etc/squid' '--libexecdir=/usr/lib/squid' '--mandir=/usr/share/man' '--enable-inline' '--disable-arch-native' '--enable-async-io=8' '--enable-storeio=ufs,aufs,diskd,rock' '--enable-removal-policies=lru,heap' '--enable-delay-pools' '--enable-cache-digests' '--enable-icap-client' '--enable-follow-x-forwarded-for' '--enable-auth-basic=DB,fake,getpwnam,LDAP,NCSA,NIS,PAM,POP3,RADIUS,SASL,SMB' '--enable-auth-digest=file,LDAP' '--enable-auth-negotiate=kerberos,wrapper' '--enable-auth-ntlm=fake,smb_lm' '--enable-external-acl-helpers=file_userip,kerberos_ldap_group,LDAP_group,session,SQL_session,time_quota,unix_group,wbinfo_group' '--enable-url-rewrite-helpers=fake' '--enable-eui' '--enable-esi' '--enable-icmp' '--enable-zph-qos' '--enable-ecap' '--disable-translation' '--with-swapdir=/var/spool/squid' '--with-logdir=/var/log/squid' '--with-pidfile=/var/run/squid.pid' '--with-filedescriptors=65536' '--with-large-files' '--with-default-user=proxy' '--enable-build-info=Ubuntu linux' '--enable-linux-netfilter' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -fdebug-prefix-map=/build/squid3-28YJxG/squid3-3.5.27=. -fstack-protector-strong -Wformat -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2' 'CXXFLAGS=-g -O2 -fdebug-prefix-map=/build/squid3-28YJxG/squid3-3.5.27=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-error=deprecated -Wno-error=format-truncation'
user@ubuntu:~$ 

Unfortunately, it doesn't work. This is the /var/log/squid/access.log

user@ubuntu:~$ sudo tail -F /var/log/squid/access.log
1530545854.655      1 192.168.0.254 TCP_DENIED/403 4037 GET http://detectportal.firefox.com/success.txt - HIER_NONE/- text/html
1530545857.667      1 192.168.0.254 TCP_DENIED/403 4037 GET http://detectportal.firefox.com/success.txt - HIER_NONE/- text/html
1530545860.673      0 192.168.0.254 TCP_DENIED/403 4037 GET http://detectportal.firefox.com/success.txt - HIER_NONE/- text/html

This is /etc/squid/squid.conf config

user@ubuntu:~$ egrep -nv '^#|^$' /etc/squid/squid.conf  
980:acl localnet src 192.168.0.0/24
982:acl SSL_ports port 443
983:acl Safe_ports port 80              # http
984:acl Safe_ports port 21              # ftp
985:acl Safe_ports port 443             # https
986:acl Safe_ports port 70              # gopher
987:acl Safe_ports port 210             # wais
988:acl Safe_ports port 1025-65535      # unregistered ports
989:acl Safe_ports port 280             # http-mgmt
990:acl Safe_ports port 488             # gss-http
991:acl Safe_ports port 591             # filemaker
992:acl Safe_ports port 777             # multiling http
993:acl CONNECT method CONNECT
1170:http_access deny !Safe_ports
1173:http_access deny CONNECT !SSL_ports
1176:http_access allow localhost manager
1177:http_access deny manager
1192:http_access allow localhost
1195:http_access deny all
1613:http_port 3128
4256:coredump_dir /var/spool/squid
4887:refresh_pattern ^ftp:              1440    20%     10080
4888:refresh_pattern ^gopher:   1440    0%      1440
4889:refresh_pattern -i (/cgi-bin/|\?) 0        0%      0
4890:refresh_pattern (Release|Packages(.gz)*)$      0       20%     2880
4893:refresh_pattern .          0       20%     4320
user@ubuntu:~$ 

What caused the issue? Was it ACL?

How to fix it?

I wanted to test if the Clients attached to a Squid Server are actually using the Cache data instead of going directly to the internet and retrieving the data. I have configured all clients browsers to read the Server:Port from the Squid Server (Which is 10.42.0.1:3128). So how do I know if they are retrieving the information from the Cache or the Internet.

I asked since a quick "test" gave me the same speed when loading several pages that had many images on them. Same images and not ads that change on every visit.

What ways can I use to check if they are using the Cache?

I ran the following: sudo tail -f /var/log/squid3/access.log and got several lines that kept on scrolling:

1374553166.136    929 185.168.101.131 TCP_MISS/200 28198 GET http://www.amazon.de/gp/offer-listing/B000NOIW62/ref=sr_1_1_olp? - DIRECT/178.236.7.219 text/html

They had a TCP_MISS/200 and at the end had a DIRECT as the example above. This happened while I had all computers in the LAN turned off. When I tried to used one I got the following doing a sudo tail -f /var/log/squid3/access.log | grep HIT

1374553387.488      0 10.42.0.14 TCP_IMS_HIT/304 278 GET http://g-ecx.images-amazon.com/images/G/01/da/creatives/sn130.png - NONE/- image/png

So it shows as TCP_IMS_HIT/304 and at the end it shows a NONE

So what does the TCP_MISS, DIRECT, TCP_IMS_HIT and NONE mean?

Is the cache working?

To save bandwidth and data on my Internet plan, I have installed squid-deb-proxy on a desktop, and the client on it and a few other machines I've got. However, based on the post that put me onto this , it sounds like if I take my laptop* to a different network and update it there, the downloaded updates will NOT be automatically copied back to the squid-deb-proxy server when I get back on my network.

Assuming that this is correct (I will be testing later), is there a way I can stick these packages into the cache so I don't have to download them one more time for other machines in the network?

* As noted in the comments, I could simply make the laptop the proxy server, but in my specific case, the laptop is actually 1) a VM that is not running all the time, 2) in a laptop that is not open all the time. As such, that solution, while a good one, does not work in my case.

On my ubuntu machine, I have squid3 as a daemon which starts at boot.

The problem is that squid3 takes a long time to start and stop (more than 30 seconds) and it has also slowed down my OS startup/shutdown time considerably.

How can I solve this issue?

I want to stop some daemons from loading at boot time, specially squid3. What is the best way of doing this?