RE: lug-bg: iptables
- Subject: RE: lug-bg: iptables
- From: bkrosnov@xxxxxxxx (Boyan Krosnov)
- Date: Wed, 3 Jul 2002 11:06:58 +0300
> Jul 3 08:43:51 firewall kernel: fp=UDP:2 a=DROP IN=eth0 OUT=eth1
> SRC=192.168.xxx.yyy DST=129.6.15.28 LEN=76 TOS=0x00 PREC=0x00 TTL=127
> ID=60553 PROTO=UDP SPT=123 DPT=123 LEN=56
> wij po-dolu no problema spored mene e 4e zabranqwash icmp
> type timestamp
> timestamp-replay syotvetno type 13 i 14
Ne e towa problema!
ICMP timestamp request i reply e umrql protokol, syshto kakto i ICMP
mask request i reply, information request i reply i t.n.
Nachina po kojto si swerqwa chasownika ochewidno e NTP ili SNTP po
source i destination port 123 w/u UDP. Nqma nishto obshto s ICMP-to,
oswen razbira se che predawaneto na greshkite (primerno 'nqma ntp syrwyr
pri men', 'nqmam pyt kym tozi host', etc) e prez ICMP.
Boyan Krosnov, CCIE#8701
Just another techie speaking for himself
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