I am running squid 3.5.12 on Ubuntu.
I have the followings in /etc/squid/squid.conf
acl SSL_ports port 443
acl CONNECT method CONNECT
acl acl_allowed_ip src my.client.ip.address.com
http_access allow acl_allowed_ip
http_access allow localhost
http_access deny all
http_port 3128
coredump_dir /var/spool/squid
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
However, when I tried to telnet from the machine with my.client.ip.address.com, it just stuck there forever:
$ telnet my.squid.server.com 3128
Trying my.squid.server.com...
telnet: connect to address my.squid.server.com: Connection timed out
But if I telnet locally on my.squid.server.com, it works fine.
And I doubt checked that it is indeed the squid process listening to the port 3128:
# netstat -lp | grep 3128
tcp6 0 0 [::]:3128 [::]:* LISTEN 3142/(squid-1)
firewalld is not running:
# systemctl status firewalld
● firewalld.service
Loaded: not-found (Reason: No such file or directory)
Active: inactive (dead)
Any idea how this can be fixed?
====================
Update #1: output of iptables -nvL
Chain INPUT (policy ACCEPT 79M packets, 55G bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 DOCKER-USER all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 DOCKER-ISOLATION-STAGE-1 all -- * * 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- * docker0 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
0 0 DOCKER all -- * docker0 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- docker0 !docker0 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- docker0 docker0 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- * docker_gwbridge 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
0 0 DOCKER all -- * docker_gwbridge 0.0.0.0/0 0.0.0.0/0
0 0 ACCEPT all -- docker_gwbridge !docker_gwbridge 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- docker_gwbridge docker_gwbridge 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT 114M packets, 18G bytes)
pkts bytes target prot opt in out source destination
Chain DOCKER (2 references)
pkts bytes target prot opt in out source destination
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
pkts bytes target prot opt in out source destination
0 0 DOCKER-ISOLATION-STAGE-2 all -- docker0 !docker0 0.0.0.0/0 0.0.0.0/0
0 0 DOCKER-ISOLATION-STAGE-2 all -- docker_gwbridge !docker_gwbridge 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-ISOLATION-STAGE-2 (2 references)
pkts bytes target prot opt in out source destination
0 0 DROP all -- * docker0 0.0.0.0/0 0.0.0.0/0
0 0 DROP all -- * docker_gwbridge 0.0.0.0/0 0.0.0.0/0
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-USER (1 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0
0 Answers