RE: [squid-users] Transparent interception MTU issues

Hi Amos,

Seems like I was mistaken. It looked and felt like MTU issues but disappeared when I compiled squid 3.2 from the latest sources.

I am wondering if it's related to this bug

http://bugs.squid-cache.org/show_bug.cgi?id=3528

Thanks

Daniel

-----Original Message-----
From: Amos Jeffries [mailto:squid3_at_treenet.co.nz]
Sent: 16 May 2012 03:36
To: squid-users_at_squid-cache.org
Subject: Re: [squid-users] Transparent interception MTU issues

On 16.05.2012 09:53, Daniel Niasoff wrote:
> Hi,
>
> I am accessing squid through a PPTP tunnel and have a lower MTU as a
> result.
>
> I am able to use squid ok as an explicit proxy however when trying
> transparent interception many pages timeout and don't open.
>
> I guess this is because of MTU issues.

Likely. But Please check your guesses before looking for a fix to them.

   ping -s 1499 ...

PMTU response or lost packet?

>
> I have tried "http_port 3129 intercept disable-pmtu-discovery=always"
> but to no avail.
>
> I am using 3.2.0.17.
>
> Any ideas?

If it actually is MTU issues, fix them.

  * Enable ICMP control messages to cross the network.
  * set MTU and/or MSS on the tunnel entrance to an appropriate low value.

Amos

Received on Tue May 22 2012 - 21:42:45 MDT