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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 O, really? 17.08.15 4:03, Stanford Prescott пишет: > ufdbGuard is not a content filter. > > On Sun, Aug 16, 2015 at 4:07 PM, Yuri Voinov <yvoinov@xxxxxxxxx> wrote: > >> > ufdbguard does. > > 16.08.15 20:27, Stanford Prescott пишет: > > >>> I have SquidClamAV implemented with the Smoothwall Express 3.1 firewall. > It > >>> works well and fast with ssl-bump, although the majority of our users > only > >>> have relatively small networks with smaller loads. > >>> > >>> FYI, E2Guardian has replaced the DansGuardian project and is currently > well > >>> maintained. E2Guardian can do content filtering for SSL but only in > >>> explicit mode, It currently does not support intercept (transparent) mode > >>> for SSLBump. > >>> > >>> On Fri, Aug 14, 2015 at 10:51 AM, Alex Rousskov < > >>> rousskov@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > >>> > >>>> On 08/13/2015 10:31 PM, Amos Jeffries wrote: > >>>>> AFAICS it > >>>>> is the backend AV library only scanning disk objects that causes the > >>>>> whole issue. Otherwise the eCAP could be much, much faster. > >>>> > >>>> The situation is more nuanced: eCAP supports asynchronous adapters. It > >>>> is possible to write a ClamAV adapter that writes messages to disk and > >>>> analyses them without blocking Squid. Doing so should eliminate most > >>>> overheads between Squid and ClamAV. > >>>> > >>>> Factory ClamAV adapter can run in asynchronous mode, but threads are > >>>> only used for _analysis_ of written files. We have not optimized the > >>>> file writing part (yet?). Hopefully, using a RAM-based file system can > >>>> mitigate a large part of that performance damage (as well as address > >>>> some of the security concerns related to disk storage?). > >>>> > >>>> A bigger performance problem, AFAICT, is that ClamAV does not support > >>>> incremental analysis. It waits for the entire file to be downloaded > >>>> first. This breaks the message delivery pipeline and increases > >>>> user-perceived response time. This problem cannot be solved outside the > >>>> ClamAV library. > >>>> > >>>> > >>>> Cheers, > >>>> > >>>> Alex. > >>>> > >>>> _______________________________________________ > >>>> squid-users mailing list > >>>> squid-users@xxxxxxxxxxxxxxxxxxxxx > >>>> http://lists.squid-cache.org/listinfo/squid-users > >>>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> squid-users mailing list > >>> squid-users@xxxxxxxxxxxxxxxxxxxxx > >>> http://lists.squid-cache.org/listinfo/squid-users > >> >> >> _______________________________________________ >> squid-users mailing list >> squid-users@xxxxxxxxxxxxxxxxxxxxx >> http://lists.squid-cache.org/listinfo/squid-users >> >> > -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJV0QpsAAoJENNXIZxhPexG24gIAMNuWsyfn/QkXWTXROZEJYL1 0frhC+w22fjV8svGjTrZEtSKY4LTHiHEjp99bPBEpPdoCURifUq20m018qRoIcEA XZfadD+s47bT7FvZbc2W58BQZUsWvotQRMNDPE+Mf0e38ev6PXsj16SaHmWytdx2 Z9H0y5qlgJwwbUyfps4uQn1wF16Qlf2Fw5TGRUbBrij+rjPYzDSXTXxtfT+4j/3V 4lZ0bN0HSFfvJrbfcpPoMCnSlRyJOm/b6Rxqv7v733OtrY/41EW1+HE1HOmW0em3 rwpAV1KgWrwMZYHcIBE147itXlz1RGQutX01auiiSvm/hO3h78rl6aSawmanOAM= =GgTR -----END PGP SIGNATURE----- |
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