Erwtimata sxetika me firewalls

[Athanasios Sidiropoylos]

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Giannis Stoilis wrote:
|...
| Χμμ, οι γραμμές με TTL τί ακριβώς είναι; Δεν έχω τέτοιες... Τι firewall
| script χρησιμοποιείς;
|

Exw balei mia sira apo iptables entoles se ena arxeio tis morfhs

/usr/sbin/iptables -A INPUT -i ppp0 -p tcp --dport 135 -j droper

kai sto droper exw balei

/usr/sbin/iptables -A droper -j LOG --log-level info

Ayto mou bgazei sta logs egrafes ths morfhs

Nov 22 00:20:58 linux kernel: IN=ppp0 OUT= MAC= SRC=62.147.173.17
DST=62.169.226.39 LEN=48 TOS=0x00 PREC=0x40 TTL=116 ID=14648 DF
PROTO=TCP SPT=4156 DPT=135 WINDOW=65535 RES=0x00 SYN URGP=0

Epidi apo aftes me endiaferei h diey8insh SRC kai h DPT ebala to grep na
filtrarei ola ta minimata pou den periexoun thn alilouxia xaraktirw TTL
(8a mporouse na einai kai kati allo ayto ebala egw) mexri toulaxiston na
balw to programataki na kita esoterika apo mono tou gia na filtrarei thn
isodo tou.


| - Γιάννης Στοΐλης
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Sidhropoulos A8anasios
msx
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