On May 11, 2012, at 4:08 PM, Chuck Swiger wrote: > On May 11, 2012, at 2:09 PM, Chad Leigh Shire.Net LLC wrote: >> it is my understanding that SYN_SENT is when MY SIDE sends out a request and >> is awaiting a reply? > > That's right. > >> One of the jails we run for a customer had hundreds (if not thousands) of >> attempts to connect from the 147. address you see below. It was exhausting >> resources so that new tcp connections could not be made until some closed. > > You have/had your jail opening connections to the webserver at IP > 147.237.76.155, not that IP trying to connect to you. > >> I added that address to a "pf" block statement to stop it but now we get a >> rolling connections in a "netstat -a" as show below (host. being a generic >> name used in place of actual host on our side). I am wondering if this >> shows something on our side trying to connect out? That is what it appears >> to me to be, which does not make sense. >> >> >> tcp4 0 0 host.52562 147.237.76.155.http SYN_SENT >> tcp4 0 0 host.52561 147.237.76.155.http SYN_SENT > > Yes, your side is trying to connect out. > Unless you know better, it seems reasonable to gather that it's doing a DoS > attack against:
Hi Chuck! Thanks. I am investigating as this side should not be going out at all, but the SYN_SENT made me think it was. Thanks Chad > > % whois 147.237.76.155 > [ ... ] > inetnum: 147.237.0.0 - 147.237.255.255 > netname: IL-GOVT-NET > descr: Israeli Government Network > country: IL > admin-c: AT979-RIPE > tech-c: TT441-RIPE > status: ASSIGNED PI > mnt-by: GOV-IL-DNS > mnt-lower: GOV-IL-DNS > mnt-routes: AS8867-MNT { ANY } > mnt-routes: AS9116-MNT { 147.237.232.0/24^24-24 } > source: RIPE # Filtered > > person: Admin Tehila > address: Israel Ministry Of Finance > address: 1 Netanel Lorech st > address: Jerusalem Israel > phone: +972 2 6664666 > fax-no: +972 2 6664650 > remarks: For ABUSE and security issues please contact > remarks: email: ab...@tehila.gov.il > remarks: or contact CERT.gov.il at rep...@cert.gov.il > nic-hdl: AT979-RIPE > source: RIPE # Filtered > > Regards, > -- > -Chuck > _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"