Re: [squid-users] can not connect squid from remote machine

On 1/12/2013 11:07 p.m., janwen wrote:
> tcpdump on squid server get follow:
> janwen_at_ubuntu:/usr/local/squid$ sudo tcpdump -i any 'port 3128'
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
> listening on any, link-type LINUX_SLL (Linux cooked), capture size 65535
> bytes
>
> and then telnet from client,squid server output follow:it seems that the
> request connect to squid server,but client shows Connection timed out.
> and i use my google chrome to connect the squid server,it's not work.
>
>
> 10:05:46.555224 IP xxx .57922 > ubuntu.San.3128: Flags [S], seq
> 2416550145, win 14600, options [mss 1460,sackOK,TS val 422202410 ecr
> 0,nop,wscale 7], length 0
> 10:05:46.555271 IP ubuntu.San.3128 > 222.73.112.140.57922: Flags [S.],
> seq 1908335791, ack 2416550146, win 14480, options [mss 1460,sackOK,TS
> val 3545032717 ecr 422202410,nop,wscale 8], length 0

This means that the TCP SYN packet got to Squid and was accept()'ed. The
SYN-ACK packet sent back to the client.

From what you are describing it would seem that SYN-ACK packet never
arrives to the client. What does that tell you?

Amos
Received on Sun Dec 01 2013 - 10:27:30 MST