Hey Antony and Ben, I have verified that the Pinger process is at fault. I don't know if it's a bug or not. You can disable pinger and it will work: http://www.squid-cache.org/Doc/config/pinger_enable/ pinger_enable off will resolve this issue. All The Bests, Eliezer ---- Eliezer Croitoru NgTech, Tech Support Mobile: +972-5-28704261 Email: ngtech1ltd@xxxxxxxxx -----Original Message----- From: squid-users <squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Antony Stone Sent: Monday, March 14, 2022 11:27 To: squid-users@xxxxxxxxxxxxxxxxxxxxx Subject: Re: SQUID refuses to listen on any TCP Port On Monday 14 March 2022 at 05:42:35, ben wrote: > Hi Eliezer, > > SQUID started listening only after I run "ip6tables -P INPUT ACCEPT". Without seeing the rest of your iptables rules, it's not clear whether this really does apply to every interface and every protocol, or whether there are exception rules which over-ride this default policy rule. However, there are quite a number of applications which will refuse to start, or not operate correctly, if you do not permit loopback traffic (IPv4 as well as IPv6), so this may be the cause of your problems. Antony. -- "Once you have a panic, things tend to become rather undefined." - murble Please reply to the list; please *don't* CC me. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users