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Hi,
On Wed, 19 Jan 2000, Jerry Glomph Black wrote:
> some of our users have complained about icmp bursts.
>
> Look at a sample of tcpdump, as run on one of the RealServers.
>
> What would cause this? Sometimes the storms are far more intense.
Are the packets to VirtualServerIP:80 rejected in the RealServerIP
using ipchains -j REJECT ? May be you default to REJECT and there is no
ACCEPT entry in the firewall for VirtualServerIP?
>
> 21:06:08.200059 RealServerIP > 152.202.84.194: icmp: VirtualServerIP tcp port
> 80 unreachable [tos 0xc0]
...
>
>
> (Using HORMS' redirect method on the RealServer)
>
> /sbin/ipchains -I input -j REDIRECT 80 -d 0.0.0.0/0.0.0.0 80 -p tcp
What about trying in the RealServerIP:
/sbin/ipchains -I input -j REDIRECT 80 -d VirtualServerIP 80 -p tcp
Is your service running or only the icmps are generated ?
Regards,
Julian Anastasov
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