I have an old 486 machine I am using as a mailserver.
I did a fairly restrictive set of ipchains rules around it, allowing only
dns and smtp outside, and only smtp and pop3 on the lan.
I'm loggin everything else, just out of interest, and I noticed ports 1 and
3 being rejected.
I looked in /etc/services for an explanation, but connot find anything !
What are port numbers 3 and 1 ?
Feb 7 10:47:17 mail kernel: Packet log: input REJECT ppp0 PROTO=1
188.8.131.52:3 <my_ext_ip>:1 L=56 S=0x00 I=15881 F=0x0000 T=253 (#16)
Feb 7 10:47:25 mail kernel: Packet log: output REJECT ppp0 PROTO=1
<my_ext_ip>:3 184.108.40.206:3 L=136 S=0xC0 I=16901 F=0x0000 T=255 (#9)
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