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This works. Thanks very much<br />
<br />

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No luck I am afraid. <br />
<br />
I applied the configuration without error but one command did not show up in the show run as if it was already the default. <br />
&quot;exceed-mss allow&quot;<br />
<br />
So it looks like it applied a empty policy to the external interface. I tried a couple of times but the tcp-map tcp-mss-map comes up blank. <br />
<br />
I am still see these sorts of errors in the logs. <br />
<br />
<br />
<br />

<pre><code id="code-2892335">6	Nov 30 2010	14:37:09						PMTU-D packet 1420 bytes greater than effective mtu 1050, dest_addr=[WAN IP], src_addr=[Random web site], prot=tcp
</code></pre>
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No luck I am afraid.

I applied the configuration without error but one command did not show up in the show run as if it was already the default.
"exceed-mss allow"

So it looks like it applied a empty policy to the external interface. I tried a couple of times but the tcp-map tcp-mss-map comes up blank.

I am still see these sorts of errors in the logs.





6	Nov 30 2010	14:37:09						PMTU-D packet 1420 bytes greater than effective mtu 1050, dest_addr=[WAN IP], src_addr=[Random web site], prot=tcp


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I have a Cisco ASA 5510 firewall and my company uses a third party POP3 providor for email. <br />
I have just installed a Konica Multi-purpose copier that can scan a document and email it. However, when I do this, my firewall stops it with the message: <br />
Dropping TCP packet from inside:10.203.15.202/1025 to outside:204.107.103.101/25<wbr />, reason: MSS exceeded, MSS 1380, data 1460<br />
<br />
I have seen how I can configure MSS to exceed for traffic coming in, but how can I configure it for traffic going out
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I have a Cisco ASA 5510 firewall and my company uses a third party POP3 providor for email. 
I have just installed a Konica Multi-purpose copier that can scan a document and email it. However, when I do this, my firewall stops it with the message: 
Dropping TCP packet from inside:10.203.15.202/1025 to outside:204.107.103.101/25, reason: MSS exceeded, MSS 1380, data 1460

I have seen how I can configure MSS to exceed for traffic coming in, but how can I configure it for traffic going out

Need help configuring my Cisco ASA Firewall to extend MSS limit for outbound traffic

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).