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Re: How to implement an iptable rule in FIAIF?



This one time, at band camp, Thomas Nguyen Van said:
> Morning,
> 
> I installed a server with Linux distribution 2.6.26-1-686 and an ADSL
> card Sangoma S518. This server is protecting a subnetwork with FIAIF.
> 
> The MTU agreed with the ISP is MTU = 1492. However, per default I got
> a routing problem because the MTU defined for my subnetwork is MTU =
> 1500. Then it generates Path MTU discovery failure.
> 
> Then I had to add the following rule in my iptable: iptables -t mangle
> -A PREROUTING -p tcp --tcp-flags SYN,RST SYN -i eth0 -j TCPMSS
> --set-mss 1400
> 
> However, I currently use FIAIF and I would prefer to translate this
> iptable rule in a FIAIF's language.
> 
> Does anyone know how to do that?

Don't drop ICMP fragmentation needed packets on the LAN side and then it
will autonegotiate PMTU?
-- 
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|   ,''`.                                            Stephen Gran |
|  : :' :                                        sgran@debian.org |
|  `. `'                        Debian user, admin, and developer |
|    `-                                     http://www.debian.org |
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