[squid-users] Unable to access a device over port 4434

Matus UHLAR - fantomas uhlar at fantomas.sk
Wed Oct 16 18:00:11 UTC 2024


On 16.10.24 16:10, Piana, Josh wrote:
>After running the below commands, I did restart squid and tested again. No luck.
>
>Here's the outputs:
>
># iptables -L -n -v

>Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
> pkts bytes target     prot opt in     out     source               destination

># iptables -t nat -L -n -v
>Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
> pkts bytes target     prot opt in     out     source               destination

># nft list tables
>No output
>
># nft list table ip filter
>Error: No such file or directory
>list table ip filter

Sorry, should've been "nft list table filter" but it really looks like you
have completely no firewall locally.

Do you have any firewall in front of your server?
Can you change your quid server's IP address you use to connect to internet?



># they also recommended changing sysctl "net.ipv4.tcp_ecn" to '0'
># sysctl net.ipv4.tcp_ecn=0
>
># confirm
># sysctl net.ipv4.tcp_ecn
>net.ipv4.tcp_ecn = 0
-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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